KC868-a16 flash sync error

[rodhamesh]

Trying to flash KC868-a16, the flash worked fine the first few days but now its giving error!

test offset :  0 0x0
case ok
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Too many lines likes this and then this message!
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[2024-12-12 15:39:39,302][ESP8266Loader_spi[1]][espDownloader.py][line:585][ERROR]: Chip sync error
[2024-12-12 15:39:39,302][ESP8266Loader_spi[1]][espDownloader.py][line:770][ERROR]: ESP32 Chip sync error esp_sync_blocking.
no log file output ...