HYG: On a Windows PC/Laptop:
1)Install Rockchip_DriverAssitant_v5.1.1
2)Install RKDevTool_Release_v2.79
3)In RKDevTool open config file change language to 2, [Language] Selected=2, save file
4)Grap a Data Micro USB Cable, not power one, make sure of this to have successful flashing
5)Open RKDevTool, connect your T3 screen USB to computer while putting it in Flash Mode, for TT press “Power” with “Volume up” while plugging in the USB, for wall I think u press “Reset” while plugging in the USB to laptop or PC
6)It should show one device connected!
7)U go to Upgrade firmware tab, Use "Firmware" to load the image, then "Upgrade" to write the image to T3
8]It should show progress, wait till its 100% complete, and in the screen if all good it will say all is good, now the screen will be rebooted and u have ur T3 back!
9)If you keep getting "Match device type failed, stop running!" try pressing the switch button first in the tool then hit upgrade
10)Update/Downgrade to your latest OS3 release!
11)Google the programs, download and install, use this for T3 image: https://mega.nz/file/gaJl1IrY#pGEN1sIxxyL9v8hXQx9lbNlyZ4rVfHAXBBCcOE1rpMY
You will thank me later, I have a PayPal if you want to donate as I had just lost a cheap source of bricked screens that I bought over the past year!