Download and install ZTE USB Driver and ZTE Firmware Upgrade Tool from the official ZTE support website.
Open the tool on your PC.
A: Generally no. Android blocks rollbacks to prevent security vulnerabilities. The only way is via custom recovery (not recommended for average users). By following this guide, you can safely keep your ZTE Blade A35 Core running smoothly and securely. When in doubt, always prefer the OTA update method – it’s designed to be foolproof. For further help, visit the official ZTE community forums or your local service center.
After completion, select Wipe cache partition (recommended), then select Reboot system now . Method 3: Update Using ZTE PC Suite Tool Some ZTE devices support PC-based flashing tools. This is useful if the phone is bricked or stuck in a boot loop.
Click Start or Upgrade . Do not disconnect the USB cable until completion.
Scroll down and tap System (or About Phone on some UI versions).
Power off the Blade A35 Core. Press and hold Volume Down while connecting to PC via USB.