ZTE Blade A34 2021 Go to product viewer dialog for this item.
Use an original USB Type-C cable connected directly to a motherboard port on your PC (avoid external USB hubs).
A: Be careful. Carrier-locked models have different modem configurations. Flashing generic firmware will probably kill cellular service.
Here is a comprehensive technical deep dive into the firmware of the ZTE Blade A34.
This is the safest way to get official improvements and bug fixes without losing your data.
This issue points to a driver conflict. Reinstall the Unisoc USB Drivers , swap your connection to a different USB port on your PC, or verify that your USB wire is capable of data transfers rather than just charging.
Hold down the button (on some variations, you may need to hold both Volume Up + Volume Down simultaneously).
Ensure the device is above 30% charge before starting any firmware flash or update.