Factory Reset Protection or FRP for short is the added protection to device which ask you to enter the previous google account that was logged in the device before factory reset from recovery menu. Well if you are reading this post I guess you are already familiar with what this is all about so lets go straight to the point.
When you remove frp on TECNO L9 using Miracle box or GSM Alladin, the phone does not boot up properly again. It shows some error and the log message “Support API: 3” at the left bottom of the display.
To solve this, you can just download the little fix t file below and flash using SPFLASHTOOL
NOTE;
After flashing the device with the fix file, Power on the phone and it will boot into recovery mode.
Now scroll down and select Wipe data/factory reset.
When reset is done, reboot device.
Phone should now boot up normal.
HERE IS A VIDEO FOR CLARITY