This method is for more advanced users when an official tool is not provided.
The initial boot up may take up to 10 minutes as the system configures the new setup. Troubleshooting Common Errors zte blade a55 firmware link
If your phone is suffering from minor glitches rather than a corrupted OS, flashing a full ROM might be unnecessary. Try a hardware recovery wipe instead: Turn the device completely off. This method is for more advanced users when
The process takes roughly 5 to 10 minutes. Do not touch the cable or the device during this window. Once finished, a green message will appear on the screen. Step 8: Reboot Try a hardware recovery wipe instead: Turn the
A: The Spreadtrum Upgrade Tool (R23.19.4001) and SPD Driver R4.20.0201 are available on ROMProvider.com and other firmware sites.
Because the ZTE Blade A55 utilizes a Unisoc chipset, standard Android tools like SP Flash Tool (which is for MediaTek) generally will not work.