Cannot see OTA bluetooth device after flashing

[qroac]

Operating System

Windows 11

INFO_UF2.TXT

UF2 Bootloader 0.9.2-OTAFIX2.1-BP1.2 lib/nrfx (v2.0.0) lib/tinyusb (0.12.0-145-g9775e7691) lib/uf2 (remotes/origin/configupdate-9-gadbb8c7)
Model: Seeed XIAO nRF52840
Board-ID: nRF52840-SeeedXiao-v1
Date: Dec 22 2025
SoftDevice: S140 7.3.0

What happened ?

Hardware: SenseCap solar node P1 Pro, preflashed with meshtastic
I flashed it with OTAFIX Bootloader and expected to see it in the DFU apps device list.
But it does not appear there.

What could be the reason the device does not appear?
Before flashing, with meshtastic the bluetooth connection worked.

How to reproduce ?

1. Just in case, I used the ERASE firmware from meshcore web flasher
2. I copied the UF2 File to the device, network drive disappeared, the device restarted
3. I launced the DFU app on my android device with the suggested settings from readme
4. I cannot see the OTA Device in the bluetooth device list

Retried step 2-4 several times
Variation: disconnected the node from computers USB and connected it to a simple USB-C charger
(it is night, the device lay on my desk for two days, battery must be drained)

Debug Log

No response

Screenshots

No response

[oltaco]

Are you looking for the correct device name? This bootloader does not use AdaDFU as the BLE advertising name when in OTA mode. Assuming you used the Xiao BLE version you should see it appear as XIAO_DFU when it is in OTA DFU mode.

There is also now a release specifically for this device, which will advertise as SCAP_DFU when in OTA DFU mode, and will allow entering that mode by holding the user button down and pressing reset.

[rgrizzell]

There is also now a release specifically for this device, which will advertise as SCAP_DFU when in OTA DFU mode, and will allow entering that mode by holding the user button down and pressing reset.

I was only able to get this to work by holding PWR and then pressing RST. Not sure if this is a misunderstanding of what constitutes a "user" button, but the P1 has 3. PWR, RST, and USR. Could also be a bug, I guess.

[oltaco]

There is also now a release specifically for this device, which will advertise as SCAP_DFU when in OTA DFU mode, and will allow entering that mode by holding the user button down and pressing reset.

I was only able to get this to work by holding PWR and then pressing RST. Not sure if this is a misunderstanding of what constitutes a "user" button, but the P1 has 3. PWR, RST, and USR. Could also be a bug, I guess.

It seems there are two pins marked as USER_BUTTON in the variant.h that I used to select which pin to use. It's probably just a matter of switching to use the other pin. I'll look into it.