ELRS Flashing Issue | ExpressLRS Community | Page 1

vocal charm Sep 10, 2024, 11:59 PM

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I have a Mobula 8 Digital HD Walksnail that I tried updating over wifi. After the update, the LED stays solid. Won't bind, no more wifi, etc.

I've tried bridging the boot pads and updating over betaflight passthough, but doesn't work. I've been able to update betaflight, currently at 4.5.1.

Any ideas would be appreciated.

Logs:

======== PASSTHROUGH INIT ========
Trying to initialize COM5 @ 420000

No CLI available. Already in passthrough mode?, If this fails reboot FC and try again!

======== RESET TO BOOTLOADER ========

Using full duplex (CRSF)

Cannot detect RX target, blindly flashing!

esptool.py v4.2.1
Serial port COM5
WARNING: Pre-connection option "no_reset" was selected. Connection may fail if the chip is not in bootloader or flasher stub mode.
Connecting...
.
.
.
...

sleek lichen Sep 11, 2024, 12:12 AM

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Your log shows ELRS Configurator cannot talk to Betaflight. Unplug everything, close Betaflight, then plug in USB and flash.

vocal charm Sep 11, 2024, 2:20 AM

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Tried that a few times. Eventually messed with the UART settings and was able to flash. However, I'm still not able to bind. I removed the boot jumper and now it's stuck blinking like it is in binding mode. Even though it blinks like it's in binding mode, I can still access it over wifi.

sleek lichen Sep 11, 2024, 2:20 AM

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Does it go into WiFi mode?

vocal charm Sep 11, 2024, 2:20 AM

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yes, edited. But it blinks the binding mode blink

sleek lichen Sep 11, 2024, 2:21 AM

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Can you show a video of the blinking

vocal charm Sep 11, 2024, 2:22 AM

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sleek lichen Sep 11, 2024, 2:24 AM

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Can you try flashing the receiver again via Betaflight Passthrough

vocal charm Sep 11, 2024, 2:32 AM

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Okay, now it gives a slow single blink. The wifi turned on immediately too

sleek lichen Sep 11, 2024, 2:34 AM

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Show screenshots of the !webui

tall pewterBOT Sep 11, 2024, 2:34 AM

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Connect to your transmitter's or receiver's WiFi network to access the web UI:

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Instructions: https://www.expresslrs.org/quick-start/webui/#how-to-get-to-the-web-ui

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https://cdn.discordapp.com/attachments/798006228450017290/1028561424768835645/TX_Module3.0.jpg

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https://cdn.discordapp.com/attachments/798006228450017290/1028561424517169183/RX_Module3.0.jpg

vocal charm Sep 11, 2024, 2:36 AM

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sleek lichen Sep 11, 2024, 2:37 AM

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vocal charm

Can you show the Options tab also?

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And then show your TX webui

vocal charm Sep 11, 2024, 2:37 AM

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sleek lichen Sep 11, 2024, 2:39 AM

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Looks good. These should connect

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Turn off/unplug everything

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Turn on your radio, open the ELRS lua

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Plug in your drone

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What does the ELRS lua show? What the the receiver LED on the FC doing?

vocal charm Sep 11, 2024, 2:42 AM

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Single slow blinks on the FC.

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rn_image_picker_lib_temp_83a55ee7-efd8-4f1a-89b3-33a0b1cad1dd.jpg

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rn_image_picker_lib_temp_add3c889-85bd-4009-90b5-213bf0ed768b.jpg

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Also there's no beeping when I plug it in

sleek lichen Sep 11, 2024, 2:44 AM

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You reflashed the receiver via Betaflight Passthrough before and it started working normally?

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Have you flashed the TX via EdgeTX Passthrough?

vocal charm Sep 11, 2024, 2:45 AM

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TX was updated over wifi

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I think I had them bound accidently at some point before flashing. This is my first time

sleek lichen Sep 11, 2024, 2:47 AM

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Try reflashing the TX via EdgeTX Passthrough

vocal charm Sep 11, 2024, 2:52 AM

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reflashed. and updated lua. but still same behavior

sleek lichen Sep 11, 2024, 2:53 AM

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Reflashed via EdgeTX Passthrough?

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Can you show a clear photo of both sides of the FC? Unplug it so the LEDs don't wash out the photo

vocal charm Sep 11, 2024, 2:56 AM

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Yes, with pass-through

sleek lichen Sep 11, 2024, 2:59 AM

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Are there any solder blobs or missing components?

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Your finger and the wires are covering up the two spots I'm looking at here

vocal charm Sep 11, 2024, 3:02 AM

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Hard to say. There may be some solder on the chip on the left

sleek lichen Sep 11, 2024, 3:05 AM

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If you think there are any bridges, add a bit of flux and hit it with a hot clean iron

vocal charm Sep 11, 2024, 3:30 AM

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Well i really don't know. I tried cleaning it up. I didn't have any flux, but the pins look a bit better. I'll bring it into work tomorrow and get someone to clean it up more. But I powered it on and am seeing the same behavior

sleek lichen Sep 11, 2024, 3:31 AM

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You can also try contacting HappyModel and see if they have any suggestions

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Do you have any other ELRS TX or RX to test with?

vocal charm Sep 11, 2024, 3:31 AM

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Nope, this was my into drone lol.

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#ELRS Flashing Issue