updating R9 slim+

[warm delta]

hey guys, i´m trying to update my R9 slim+ via BF passthrough... an i get this:

We were already in bootloader

uploading 52752 bytes...

ERROR:xmodem.XMODEM:send error: expected ACK; got b'C' for block 1

And after 11 tries it stops
any ideas? thanks

[candid charm]

✨AI-Generated response✨

It looks like the update failed. If you're using Betaflight Passthrough, make sure you've followed the steps in the guide and confirm you have completed the Receiver Wiring Quick Start Guide.

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please follow up in #help-and-support or #general-quad-help

-# {'cause': 'thread creation'}

[echo badger]

Answered in #help-and-support

[warm delta]

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

Attempting to detect FC UART configuration...
** Serial RX config detected: 'serial 1 64 115200 57600 0 115200'
Enabling serial passthrough...
CMD: 'serialpassthrough 1 420000'
======== PASSTHROUGH DONE ========

We were already in bootloader

uploading 52752 bytes...

ERROR:xmodem.XMODEM:send error: expected ACK; got b'C' for block 1
ERROR:xmodem.XMODEM:send error: expected ACK; got b'C' for block 1
ERROR:xmodem.XMODEM:send error: expected ACK; got b'C' for block 1
ERROR:xmodem.XMODEM:send error: expected ACK; got b'C' for block 1
ERROR:xmodem.XMODEM:send error: expected ACK; got b'C' for block 1
ERROR:xmodem.XMODEM:send error: expected ACK; got b'C' for block 1
ERROR:xmodem.XMODEM:send error: expected ACK; got b'C' for block 1
ERROR:xmodem.XMODEM:send error: expected ACK; got b'C' for block 1
ERROR:xmodem.XMODEM:send error: expected ACK; got b'C' for block 1
ERROR:xmodem.XMODEM:send error: expected ACK; got b'C' for block 1
ERROR:xmodem.XMODEM:send error: expected ACK; got b'C' for block 1
ERROR:xmodem.XMODEM:send error: NAK received 11 times, aborting.
[FAILED] Upload failed!

*** [upload] Error -1
========================= [FAILED] Took 30.70 seconds =========================

Environment Status Duration

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Frsky_RX_R9SLIMPLUS_via_BetaflightPassthrough FAILED 00:00:30.704
==================== 1 failed, 0 succeeded in 00:00:30.704 ====================

same thing....