KC868-A16 detected but failed to download firmware

[mohaz]

Hi,
I recently purchased a second KC868-A16 , the first one installed ~4 months ago works fine
But the new one can't download firmware  using flash download tool  (see attached file)
I tried the followinf steps:
 1) use the original Usb c cable , and try another one  (no usb hub)  same  from anotehr PC  -> NOK
 2) using flash downlod tool with different rate ->  (see attached download tool log) => NOK
 3) Trying upload using esphome  -> NOK  (see attached error log)
 4) Even connected to Lan netowrk   the scan tool can't detect it

NB : 

The usb device is connected when plugged but there is communication issue or flash issue.

Thank you for your support. 

Regards.

[admin]

do you have installed RF433M receiver module? if installed , please remove it when download firmware.

[mohaz]

Hi,
After removing the RF433M, the download process succeeded and everything is working well.
Thank you for your support

[admin]

ok, good.