Give us correct touch firmware link, and we are all happy! Don't waste time writing, give us solutions, g4 is not g2s, i also found and tried g4 firmware without success. Touch panels are different, jiayu never reply to my request. My faulty g2f return back to rhe supplier and i had full refund.
Why would you replace a working touch screen? This is silly. Just find the correct firmware and flash that instead. I recall Jiayu G4 had touch issues, Jiayu released a touch firmware and all went well.
Stop replacing perfectly working hardware , it's wasteful and embarrassing. Here we are all a software forum. Software solutions are the only solutions, everything else isn't even if it "solves" the problem.
"Sorry, you use inappropriate software to update, has caused the touch screen IC damage,the rom for G2F-W can't used for G2F-TD,because of the different screen.
you need to replace a new touch screen or returned to the manufacturer to solve, updating software can't solve this problem."
This is how Jiayu technical support answered me.
You don't have the right to judge anybody, especially if you don't know the problem and situation. The hardware wasn't working perfectly, it was impossible to use the phone. Replacing screen solution was enough for me and I reached my target to make the phone usable again.
Sorry but this is not true, for example bad firmware can cause that the component won't be recognized or reflashed. Hard brick is common after bad flash or wrong flash:
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