: Ensure the file is not inside a folder and is correctly named. Try a different USB stick if the error persists.
Run a simple print job for 10,000 cycles. If the was authentic, there will be zero "buffer underrun" errors. If you see "Comm Timeout," your verification process missed a CRC error in the communication stack. ew6800 firmware update verified
[SEC] Firmware signature verified successfully. Chain of trust established. : Ensure the file is not inside a