If you'd like to troubleshoot a specific error message you're seeing in the flash tool or need help finding the correct firmware version for your region, let me know!
If your phone is frozen on the ZTE logo or a black screen, a force restart is the first step. Press and hold the Power button for approximately 10 to 15 seconds. How To Unbrick ZTE Blade A34
: Specialized software such as the ZTE Handset Diagnostic Interface(DFU) or third-party tools like Unlocktool are used to re-upload the operating system. If you'd like to troubleshoot a specific error