Issues flashing ELRS to older module | ExpressLRS Community | Page 1

gentle smelt Apr 15, 2024, 2:21 AM

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So a friend gave me this quad because "it's analog and I only fly DJI" and according to her it's never been flown and she got it back in like 2020 or something. The point being that the parts are a bit old;

ELRS RX; Flywoo 2.4 Ghz EL24P RX
FC: Goku Hex GN405 nano

I've already successfully udpated the FC to the latest version of Betaflight.

Betaflight is closed and not connected. I've attached an image of my ExpressLRS Config settings to this post, along with the resulting error;

======== PASSTHROUGH INIT ========
  Trying to initialize COM19 @ 420000


Attempting to detect FC UART configuration...

    ** Serial RX config detected: 'serial 0 64 115200 57600 0 115200'
Enabling serial passthrough...
  CMD: 'serialpassthrough 0 420000'

======== PASSTHROUGH DONE ========
======== RESET TO BOOTLOADER ========

  * Using full duplex (CRSF)

Cannot detect RX target, blindly flashing!

esptool.py v4.2.1
Serial port COM19
WARNING: Pre-connection option "no_reset" was selected. Connection may fail if the chip is not in bootloader or flasher stub mode.
Connecting...
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Any help figuring this out would be much appreciated.

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Issues flashing ELRS to older module

unborn nest Apr 15, 2024, 2:30 AM

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please post a photo of the actual receiver to FC wiring..

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Also, what does the LED on the receiver do? is it blinking? is it even powered up?

gentle smelt Apr 15, 2024, 2:38 AM

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unborn nest Also, what does the LED on the receiver do? is it blinking? is it even powered u...

I think I found the issue. Please confirm in the video I'm about to send;

Is this the indication for "Radio chip not detected" as per the LED status page in the documentation? Cuz that would explain a lot and I'll just replace it if so.

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gentle smelt Apr 15, 2024, 2:39 AM

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unborn nest please post a photo of the actual receiver to FC wiring..

I can post the wiring too but I think it may just be a bad receiver at this point and the wiring is straight from the factory. This should be a BnF

unborn nest Apr 15, 2024, 2:39 AM

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gentle smelt

no..

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go through this process:
https://www.expresslrs.org/quick-start/unbricking/

Unbricking - ExpressLRS

ExpressLRS aims to provide the best completely open, high refresh radio control link while maintaining a maximum achievable range at that rate with low latency. Vast support of hardware in both 900 MHz and 2.4 GHz frequencies.

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FOLLOW the step-by-step

#Issues flashing ELRS to older module