Overlay uses with all GSI for Device : SM-T225 , 225N & T220 OBJECTIVE TRY TO fixes the following : • Brightness stack ( auto brightness toggle enable ) (working now) • CPU core frequencies • Missing battery...
you can still use the A12 one on A13 GSI's without problems
i don't recommend doing one without know what to do mine is broken rendered Evox Rom into a brick boots but loads a bunch of stuff from Stock OneUI 5.0 rom and QuickSwitch dies and wallpapers and styles
Attached is the T220's framework extracted from the AVE1 firmware. The rest of the instructions are...kinda advanced for me. Although the only difference between the T220 and T225 is SIM card capabilities so perhaps your file also works for the T220. I shall test in a moment.
Edit: Tested your file and my T220 does not boot.
Edit #2: Also uploaded the vendor file called framework-res__auto_generated_rro_vendor.