# flashing rnode firmware on generic esp32s3 devkit

_Help · started by table on Wed, Jun 17, 2026 6:37 AM_

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## Original post

**table** · Wed, Jun 17, 2026 6:37 AM

hey, i'm trying to make an rnode on my esp32s3 devkit with a sx1262 lora transceiver wired up to it but there's no firmware option for a generic esp32s3. 

i already made a custom boards.h and modified the build for it but when i flash it i get:

```
[01:55:53] Opening serial port /dev/ttyACM0...
[01:55:56] Serial port opened, but RNode did not respond. Is a valid firmware installed?
Got invalid response while detecting device```

i was reading some of the code and it seems like i need a rnode-specific bootloader and console image but idk. can anyone help me out?

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