Cause: Battery voltage too low or dead battery. Fix: Charge the phone for 2 hours using a wall charger. Then try again.
Even with the BQ Firmware Flash Tool upd, errors occur. Here are the most frequent: bq firmware flash tool windows 10 upd
Since BQ’s official servers are mostly offline, you must rely on trusted third-party repositories. Do not download from random file upload sites to avoid malware. Cause : Battery voltage too low or dead battery
You need to enable Developer Options and USB Debugging. Cause : Driver not installed or device is
Cause: Driver not installed or device is not in preloader mode. Fix: