MCU Protocol error | VORONDesign | Page 1

pine berry May 4, 2025, 9:14 PM

#

Today I did install the new updates. this happened. please someone help?

earnest geode May 4, 2025, 9:26 PM

#

pine berry Today I did install the new updates. this happened. please someone help?

the message pretty much covers it

#

"this is frequently caused by running an older version of the firmware on the mcu(s)"

#

and that's consistent with the version numbers seen in the second paragraph.

pine berry May 4, 2025, 9:38 PM

#

I'm trying to flash the mcu on the printer. it's been a while since i'm using machine. forgot all the thing

earnest geode May 4, 2025, 9:40 PM

#

pine berry I'm trying to flash the mcu on the printer. it's been a while since i'm using ma...

alright, what mcu?

pine berry May 4, 2025, 9:49 PM

#

Sorry, not enough info. I'm using:

BIGTREETECH Octopus Pro V1.1
BIGTREETECH Pi V1.2
EBB SB2240 2209 CAN v1.0

please help

earnest geode May 4, 2025, 9:53 PM

#

is the octopus pro your can interface? or is there a separate utoc or something?

#

@pine berry

pine berry May 4, 2025, 9:58 PM

#

yes

earnest geode May 4, 2025, 9:58 PM

#

which

pine berry May 4, 2025, 9:59 PM

#

the CANBUS

earnest geode May 4, 2025, 9:59 PM

#

what

#

I'm asking what provides the canbus interface

#

it might be the octopus

#

it might be some other device

pine berry May 4, 2025, 9:59 PM

#

the octopus

earnest geode May 4, 2025, 9:59 PM

#

I need you to tell me which

#

okay

#

cool

pine berry May 4, 2025, 10:00 PM

#

llol sorry didn't get your question,

earnest geode May 4, 2025, 10:00 PM

#

go here

#

https://canbus.esoterical.online/Updating.html

Esoterical’s CANBus Guide

Updating

A guide for setting up CANBus hardware on 3D printers

#

it takes you through updating both boards

#

for the main board, you'll want to choose the "can-bridge mainboard" path

#

ping me if you get stuck

pine berry May 4, 2025, 10:01 PM

#

ok. my option is Can-bridge

#

thanks. i'll try now

#

@earnest geode sorry question: yourmainboarduuid which is:

[mcu]
canbus_uuid: 4bf36eac87e5

[mcu EBBCan]
canbus_uuid: e8c320837692

#

it's in my printer.cfg

earnest geode May 4, 2025, 10:11 PM

#

ebbcan is your toolhead

#

[mcu] is your main

pine berry May 4, 2025, 10:11 PM

#

ok. thanks

#

it's been a year since i touch the printer. I may forgot most of the stuffs

#

ERROR:root:Flash Error
Traceback (most recent call last):
File "/home/biqu/katapult/scripts/flashtool.py", line 629, in main
loop.run_until_complete(sock.run(args.device, args.baud, fpath))
File "/usr/lib/python3.9/asyncio/base_events.py", line 642, in run_until_complete
return future.result()
File "/home/biqu/katapult/scripts/flashtool.py", line 530, in run
raise FlashCanError("Invalid firmware path '%s'" % (fw_path))
FlashCanError: Invalid firmware

earnest geode May 4, 2025, 10:16 PM

#

pine berry ok. thanks

obviously its too late now, but I'd second guess yourself a bit on your first move being updates: if you look over the klipper changes in the last year or so, you really won't find much that's actually beneficial to your existing (presumably functional) printer....

pine berry May 4, 2025, 10:17 PM

#

I ran python3 ~/katapult/scripts/flashtool.py -f ~/klipper/out/klipper.bin -d /dev/serial/by-id/usb-katapult_stm32f446xx_1A001F000D50535556323420-if00

#

and it gives Flash Erro

earnest geode May 4, 2025, 10:17 PM

#

pine berry ERROR:root:Flash Error Traceback (most recent call last): File "/home/biqu/kat...

go back a step

#

can you show me what happened when you built the firmware?

#

(the make step in the klipper folder)

pine berry May 4, 2025, 10:18 PM

#

here is what i did:

Last login: Sun May 4 21:39:21 2025 from 192.168.1.100
biqu@BTT-CB1:~$ cd ~/klipper
biqu@BTT-CB1:~/klipper$ make menuconfig
Loaded configuration '/home/biqu/klipper/.config'
Configuration saved to '/home/biqu/klipper/.config'
biqu@BTT-CB1:~/klipper$ sudo service klipper stop
biqu@BTT-CB1:~/klipper$ python3 ~/katapult/scripts/flashtool.py -i can0 -r -u 4bf36eac87e5
Sending bootloader jump command...
Bootloader request command sent
Flash Success
biqu@BTT-CB1:~/klipper$ ls /dev/serial/by-id/*
/dev/serial/by-id/usb-katapult_stm32f446xx_1A001F000D50535556323420-if00

earnest geode May 4, 2025, 10:19 PM

#

you skipped a step

pine berry May 4, 2025, 10:19 PM

#

oh?

earnest geode May 4, 2025, 10:19 PM

#

after make menuconfig

#

there should be a make

pine berry May 4, 2025, 10:19 PM

#

damn

#

thanks. i'll try again

earnest geode May 4, 2025, 10:19 PM

#

should be able to just do cd ~/klipper, then make

#

and assuming it builds okay, resume from there

pine berry May 4, 2025, 10:20 PM

#

thank you

earnest geode May 4, 2025, 10:22 PM

#

oh, I guess the octopus ended up in katapult mode, so you might have to either reset it, or use a different flashing command

#

make flash FLASH_DEVICE=/dev/serial/by-id/usb-katapult_stm32f446xx_1A001F000D50535556323420-if00 would probably work

pine berry May 4, 2025, 10:22 PM

#

i'll try

#

Attempting to connect to bootloader
CanBoot Connected
Protocol Version: 1.0.0
Block Size: 64 bytes
Application Start: 0x8008000
MCU type: stm32f446xx
Flashing '/home/biqu/klipper/out/klipper.bin'...

[##################################################]

Write complete: 3 pages
Verifying (block count = 544)...

[##################################################]

Verification Complete: SHA = 4B149696AA788F428DAB610C5A9AC32218A7C979
CAN Flash Success

#

is it done?

#

last command is sudo service klipper start

#

Firmware restart didn't work.

earnest geode May 4, 2025, 10:38 PM

#

can you show me what settings you used for menuconfig?

pine berry May 4, 2025, 10:39 PM

#

i'm using https://user-images.githubusercontent.com/124253477/221378502-d3aee8c7-c4ba-42da-838b-3e64cfc6262d.png

#

from the website

earnest geode May 4, 2025, 10:39 PM

#

show yours though

#

why did you use h723?

pine berry May 4, 2025, 10:43 PM

#

it's BigTreeTech Octopus Pro v1.1 and I can't remember what model

#

here is my setting menuconfig

earnest geode May 4, 2025, 10:49 PM

#

well you need to identify what it actually is, not just guess

pine berry May 4, 2025, 10:50 PM

#

hmm. i'm gonna open the printer

#

brb

earnest geode May 4, 2025, 10:50 PM

#

since when it was in katapult mode, it showed up as "/dev/serial/by-id/usb-katapult_stm32f446xx_1A001F000D50535556323420-if00", I think it's a stm32f446

#

@pine berry wait, before you go do that 😛

pine berry May 4, 2025, 10:50 PM

#

oh wow

#

you're right

#

stm32f446

earnest geode May 4, 2025, 10:51 PM

#

(though you're probably going to have to open the printer now anyway: you're gonna need to get at the reset button now)

pine berry May 4, 2025, 10:51 PM

#

should I try with STM32f446 now?

earnest geode May 4, 2025, 10:51 PM

#

yes

#

but you're going to get stuck when you go to actually flash it

#

a double tap of the reset button should put it back into katapult

pine berry May 4, 2025, 10:52 PM

#

what reset button?

earnest geode May 4, 2025, 10:52 PM

#

by the usb port on the octopus

pine berry May 4, 2025, 10:53 PM

#

ok i see it

#

double tap? it while it's on or off?

earnest geode May 4, 2025, 10:55 PM

#

on

pine berry May 4, 2025, 11:02 PM

#

ok. now double tap done. gonna re-do the whole thing again. BRB

#

you're right the model is STM32F446ZET6

#

@earnest geodeI tried and didn't work. the error is gone. but the blue screen still there. What did I do wrong?

earnest geode May 4, 2025, 11:20 PM

#

pine berry <@464976162611789834>I tried and didn't work. the error is gone. but the blue sc...

I mean, did you confirm that it was returning a UUID before trying to start klipper?

#

did it even flash successfully?

#

I need to see more of what you did before I can really comment much

#

all I see right now is klipper not communicating with something for some reason ...

pine berry May 4, 2025, 11:22 PM

#

python3 ~/katapult/scripts/flashtool.py -i can0 -r -u yourmainboarduuid

Didn't work flash

#

when i do that

earnest geode May 4, 2025, 11:22 PM

#

of course not

pine berry May 4, 2025, 11:22 PM

#

python3 ~/katapult/scripts/flashtool.py -i can0 -r -u 4bf36eac87e5

this is my uuid

earnest geode May 4, 2025, 11:23 PM

#

right, but you need a working board, in klipper before it has a uuid

#

since you went and flashed it with an incorrect firmware, that's no longer a thing you have

pine berry May 4, 2025, 11:23 PM

#

oh wow. i need a new uuid?

earnest geode May 4, 2025, 11:24 PM

#

no

#

it doesn't have a uuid at all right now

pine berry May 4, 2025, 11:24 PM

#

ok please help me

earnest geode May 4, 2025, 11:24 PM

#

its in katapult right now (hopefully)

#

from us hitting the reset earlier

#

which means it should have an id in /dev/serial/by-id

#

which means you SHOULD be able to flash it with the make flash command, same as last time

#

but you should check that it's actually there

pine berry May 4, 2025, 11:26 PM

#

ii'm gonna try again

earnest geode May 4, 2025, 11:26 PM

#

well start by just doing ls /dev/serial/by-id and make sure it's actually there

pine berry May 4, 2025, 11:27 PM

#

can not access

#

cannot access '/dev/serial/by-id': No such file or directory

earnest geode May 4, 2025, 11:27 PM

#

well you gotta get it showing up before you can do anything

#

double tap reset again?

pine berry May 4, 2025, 11:28 PM

#

ok. let me do again. 1s

#

ok done.

earnest geode May 4, 2025, 11:29 PM

#

and? is it there now?

pine berry May 4, 2025, 11:30 PM

#

usb-katapult_stm32f446xx_1A001F000D50535556323420-if00

#

yes

earnest geode May 4, 2025, 11:30 PM

#

okay, good

#

so now you should be able to flash it with the make flash FLASH_DEVICE... from before

pine berry May 4, 2025, 11:31 PM

#

no need to make menuconfig again?

earnest geode May 4, 2025, 11:32 PM

#

once you build the firmware with one set of settings, it should stay there until you overrwrite it with something else

pine berry May 4, 2025, 11:33 PM

#

so do this: make flash FLASH_DEVICE=/dev/serial/by-id/usb-katapult_stm32f446xx_1A001F000D50535556323420-if00

#

?

earnest geode May 4, 2025, 11:33 PM

#

yes

pine berry May 4, 2025, 11:34 PM

#

*** No rule to make target 'flash'. Stop.

#

i can't do it

earnest geode May 4, 2025, 11:35 PM

#

are you still in the klipper directory?

pine berry May 4, 2025, 11:35 PM

#

no

earnest geode May 4, 2025, 11:36 PM

#

all of this should be done from there

pine berry May 4, 2025, 11:37 PM

#

well. i'm dump. didn't know

#

thanks it works

#

now it's CAN Flash Success

earnest geode May 4, 2025, 11:37 PM

#

alright, that's promising

#

could probably try restarting klipper now, see what it has to say

pine berry May 4, 2025, 11:40 PM

#

i see that blue screen again.

Klipper reports: STARTUP

Printer is not ready
The klippy host software is attempting to connect. Please
retry in a few moments.

earnest geode May 4, 2025, 11:40 PM

#

alright, what is lsusb showing right now?

pine berry May 4, 2025, 11:42 PM

#

08 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 004 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 007 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 006 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 001 Device 002: ID 046d:082d Logitech, Inc. HD Pro Webcam C920
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

#

not seeing my CANBUS

earnest geode May 4, 2025, 11:43 PM

#

better take me back through this then

#

you did actually build the firmware for the 446 version, right? (at some point in the proceedings?)

#

can you show me?

#

make menuconfig, etc

pine berry May 4, 2025, 11:44 PM

#

yes.

#

this is menu

earnest geode May 4, 2025, 11:45 PM

#

hmmm

#

are you sure those are all the settings you were given in esoterical's guide?

#

take your time. go through it all, line by line

pine berry May 4, 2025, 11:48 PM

#

yes. i'm pretty sure i did the same on the guide

earnest geode May 4, 2025, 11:49 PM

#

really?

#

#

here are the settings for a 446 board, from esotericals guide

#

I see at least 2 that are completely different in your screenshot, vs this image from the guide

pine berry May 4, 2025, 11:50 PM

#

i can't see that where on the guide

earnest geode May 4, 2025, 11:51 PM

#

(might have to click regular octopus, not pro)

pine berry May 4, 2025, 11:53 PM

#

thanks. i didn't see that

#

oh i choose the PRO. thats why

#

ok thanks

#

let me try again. thanks

#

hi,

sudo service klipper stop

then I can't do

ls /dev/serial/by-id/*

earnest geode May 5, 2025, 12:04 AM

#

so you need to double tap reset again

#

every time you flash a garbage firmware, its going to try to return to normal operation. but of course, it'll fail, because garbage firmware

#

so each time, you need to force it back into katapult, via the double tap reset method

pine berry May 5, 2025, 12:06 AM

#

ok. i gotta go eat. i'll try this other time. thanks again.

pine berry May 5, 2025, 12:41 AM

#

@earnest geode

I finally success updated the mcu firmware, but still I still need update my EBBCan. Here is the error.

Which guide should I follow. TIA

#

Following this guide? https://canbus.esoterical.online/toolhead_flashing.html

Esoterical’s CANBus Guide

Toolhead Flashing

A guide for setting up CANBus hardware on 3D printers

earnest geode May 5, 2025, 12:56 AM

#

pine berry Following this guide? https://canbus.esoterical.online/toolhead_flashing.html

That looks like the first time flashing page

#

start back at https://canbus.esoterical.online/Updating.html, and look for information on updating toolhead boards

pine berry May 5, 2025, 1:01 AM

#

ok. i'm working on it.

#

I have BigTreeTech SB2209 and SB2240. how do I reset the board? double tap the reset button?

#

i have to put in DFU mode

earnest geode May 5, 2025, 1:26 AM

#

...why do you need to do that?

#

@pine berry That sounds like first time flashing stuff

#

not updating

#

what are you looking at exactly?

pine berry May 5, 2025, 1:29 AM

#

https://canbus.esoterical.online/toolhead_klipper_updating.html i'm looking at this

Esoterical’s CANBus Guide

Toolhead Updating

A guide for setting up CANBus hardware on 3D printers

#

right?

earnest geode May 5, 2025, 1:29 AM

#

that's the right page

#

but I don't think anything on that page makes any mention of putting the board into dfu mode

pine berry May 5, 2025, 1:30 AM

#

i meant the reset button

earnest geode May 5, 2025, 1:30 AM

#

"i have to put in DFU mode"

#

you said that

#

word for word

#

I need to understand why you think you need to put the board into dfu mode

#

because either you're badly off course, or something has gone very wrong

#

and I need to understand which

#

don't get me wrong, I intend to help you either way, but I need to understand wtf is going on

#

broadly speaking, with a canbus toolhead board, the only time you need it to be in dfu mode (which is a USB flashing channel, not canbus), is when you use it to get katapult on there in the first place

#

once you've done that (which you presumably did way back whenever you first built this) dfu should never enter the equation again

pine berry May 5, 2025, 1:33 AM

#

i thought reset is dfu mode. thats all

earnest geode May 5, 2025, 1:33 AM

#

okay, but I also don't understand why you think you need to reset the board

#

it was a working board, right? its firmware is just out of date

pine berry May 5, 2025, 1:34 AM

#

ya

earnest geode May 5, 2025, 1:34 AM

#

so you should be able to follow the instructions under

#

If you already have a functioning CAN setup, and your [mcu toolhead] canbus_uuid is in your printer.cfg, then you can force Katapult to reboot into Katapult mode by running:

#

which is all software. no messing around with hardware buttons involved

#

we only went down rabbit holes of reset buttons with the mainboard because of flashing it with the wrong firmware the first time

pine berry May 5, 2025, 1:35 AM

#

ok. thanks for clear things out

earnest geode May 5, 2025, 2:54 AM

#

pine berry ok. thanks for clear things out

Is the silence a sign of success?

pine berry May 5, 2025, 9:14 PM

#

@earnest geodeStill having issuse updating the toolhead CANBUS.

i'm not sure my BigTreeTech SB2209 and SB2240 menucofig is correct or not. Here is screenshot:

earnest geode May 5, 2025, 9:17 PM

#

Check your communication interface

#

https://canbus.esoterical.online/toolhead_flashing/common_hardware/BigTreeTech SB2209 and SB2240/README.html

Esoterical’s CANBus Guide

BigTreeTech SB2209 and SB2240

A guide for setting up CANBus hardware on 3D printers

pine berry May 5, 2025, 9:20 PM

#

thanks. I think i have to check where the cable connected. I forgot. Let me open the printer.

and sorry I got tired last night, passed out.

earnest geode May 5, 2025, 9:24 PM

#

pine berry thanks. I think i have to check where the cable connected. I forgot. Let me open...

Oh, no need to crack the printer

#

I just mean, check what you have that set to

#

We know it's running canbus

#

And from esoterical's, we know what port that means it's using

#

But you have it set to some usb port 😛

pine berry May 5, 2025, 9:26 PM

#

that's what i don't remember which port is one.

( ) CAN bus (on PA11/PA12)
( ) CAN bus (on PA11/PB9)
( ) CAN bus (on PB8/PB9)
( ) CAN bus (on PB12/PB13)
(X) CAN bus (on PD0/PD1)
( ) CAN bus (on PB0/PB1)
( ) CAN bus (on PD12/PD13)
( ) CAN bus (on PC2/PC3)

#

i tried CAN bus (on PB0/PB1) but didn't work either

earnest geode May 5, 2025, 9:28 PM

#

pine berry i tried CAN bus (on PB0/PB1) but didn't work either

Doesn't make it wrong

#

What happened when you tried to flash, with the canbus setting?

pine berry May 5, 2025, 9:30 PM

#

i didn't detect my uuid

#

sorry was it answer?

earnest geode May 5, 2025, 9:32 PM

#

Can you show me the building and flashing steps?

earnest geode May 5, 2025, 9:32 PM

#

pine berry sorry was it answer?

Yes

pine berry May 5, 2025, 9:32 PM

#

i did make menucofig

earnest geode May 5, 2025, 9:32 PM

#

Sure, and then?

pine berry May 5, 2025, 9:33 PM

#

using same setting as the image on https://canbus.esoterical.online/toolhead_flashing/common_hardware/BigTreeTech SB2209 and SB2240/README.html klipper config

Esoterical’s CANBus Guide

BigTreeTech SB2209 and SB2240

A guide for setting up CANBus hardware on 3D printers

#

then I do: python3 ~/katapult/scripts/flashtool.py -i can0 -r -u e8c320837692

earnest geode May 5, 2025, 9:34 PM

#

Okay, but you're skipping steps!

pine berry May 5, 2025, 9:34 PM

#

it didn't said Flash success

earnest geode May 5, 2025, 9:34 PM

#

Important ones!

pine berry May 5, 2025, 9:35 PM

#

oh ya sorry

#

make clean
make

#

ok I did "make" now do? python3 ~/katapult/scripts/flashtool.py -i can0 -r -u e8c320837692

#

here is what i got:

#

b'V24 '
Connecting to CAN UUID e8c320837692 on interface can0
Sending bootloader jump command...
Bootloader Request C

#

Complete

earnest geode May 5, 2025, 9:37 PM

#

Okay, that's probably fine. Flash complete on the reset command was always basically a bug

#

I'm guessing it just got fixed at some point

#

So then what?

pine berry May 5, 2025, 9:38 PM

#

python3 ~/katapult/scripts/flashtool.py -q

I got:

Resetting all bootloader node IDs...
Checking for Katapult nodes...
CANBus UUID Query Complete

#

didn't see the uuid

earnest geode May 5, 2025, 9:48 PM

#

Hmm. So it didn't show up in katapult at all...

#

Is the status led on the toolhead board flashing?

pine berry May 5, 2025, 9:48 PM

#

let me check

#

no it's not flashing

earnest geode May 5, 2025, 9:52 PM

#

Well, might be time to try a double tap on the reset button after all

pine berry May 5, 2025, 9:52 PM

#

ok. let me do.

#

now the RED led is flashing

#

what i do now

#

go back to step 3?

earnest geode May 5, 2025, 9:54 PM

#

Try the flashtool -q again

#

See if it shows up now

pine berry May 5, 2025, 9:55 PM

#

ok i did : python3 ~/katapult/scripts/flashtool.py -q

got respond:

Resetting all bootloader node IDs...
Checking for Katapult nodes...
Detected UUID: e8c320837692, Application: Katapult
CANBus UUID Query Complete

#

python3 ~/katapult/scripts/flashtool.py -i can0 -f ~/klipper/out/klipper.bin -u e8c320837692

#

I got respond:

b'V24 '
Connecting to CAN UUID e8c320837692 on interface can0
Sending bootloader jump command...
Resetting all bootloader node IDs...
Detected Klipper binary version v0.13.0-78-g1cc639807, MCU: stm32g0b1xx
Attempting to connect to bootloader
Katapult Connected
Software Version: ?
Protocol Version: 1.0.0
Block Size: 64 bytes
Application Start: 0x8002000
MCU type: stm32g0b1xx
Verifying canbus connection
Flashing '/home/biqu/klipper/out/klipper.bin'...

[##################################################]

Write complete: 16 pages
Verifying (block count = 496)...

[##################################################]

Verification Complete: SHA = 0D7E7D4621EFEA3FE9CFFD1986E6E5A5AD186BAE
Programming Complete

#

and I ran:

python3 ~/katapult/scripts/flashtool.py -i can0 -q

Resetting all bootloader node IDs...
Checking for Katapult nodes...
CANBus UUID Query Complete

#

still dont detect the uuid:

earnest geode May 5, 2025, 10:07 PM

#

Silly question, is klipper still running?

pine berry May 5, 2025, 10:08 PM

#

i think it's stop

#

in step 2: sudo service klipper stop

earnest geode May 5, 2025, 10:09 PM

#

Okay

#

Can we re-check what make menuconfig looks like right now?

pine berry May 5, 2025, 10:10 PM

#

earnest geode May 5, 2025, 10:11 PM

#

That all looks sane...

pine berry May 5, 2025, 10:11 PM

#

right.

earnest geode May 5, 2025, 10:11 PM

#

You did do a fresh make clean & make after changing it back to canbus, right?

pine berry May 5, 2025, 10:11 PM

#

yes

#

i can redo again if what you're asking

earnest geode May 5, 2025, 10:12 PM

#

It's not a bad idea to step through again, and see if anything different happens.

#

But no, I wasn't hinting at that

#

I just wanted to confirm nothing had gotten missed while we were jumping around

pine berry May 5, 2025, 10:13 PM

#

ok let me redo the whole thing again from step 1

#

ya. still error. Didn't detect the uuid when I do: python3 ~/katapult/scripts/flashtool.py -i can0 -q

#

in step 4

#

do i need to do DFU mode?

earnest geode May 5, 2025, 10:26 PM

#

Double clicking the reset button is to put it into katapult, not dfu

#

But yes, you'll need to do that

pine berry May 5, 2025, 10:26 PM

#

i did

#

i tried double click the reset button

#

what now

earnest geode May 5, 2025, 11:07 PM

#

pine berry what now

Follow the process. Flash the board

#

See if it somehow behaves better this time

pine berry May 5, 2025, 11:34 PM

#

seem i can't enter DFU mode

#

nvm, usb cable is bad.

pine berry May 6, 2025, 12:10 AM

#

yes. done

#

got it working again now

#

THanks for your time @earnest geode I'm really appricate your help

#

DFU mode help.

#MCU Protocol error