_verified_ - Firmware Zte Blade A55 Link

If you found a update.zip file:

Flashing stock firmware usually does require an unlocked bootloader. However, if you plan to flash custom recovery or root the device later, you may need to unlock the bootloader first. This process typically voids the warranty and is not recommended for novice users. firmware zte blade a55 link

Yes, by flashing an older stock ROM package. However, downgrading can sometimes cause compatibility issues with the device’s hardware drivers. It is safer to stay on the latest official firmware. If you found a update