3d Printer Lcd Problem After Power Loss

Hello I’m a university student, I have Ender-3 S1 and after a black out my Icd in the printer went black I tried to flash new firmware In the Icd with microSd the screen loads the firmware and then the screen goes black again. The printer works fine (it beeps and calibrates) but the screen is black. Any suggestions?

I tried to contact Creality via email. They asked me for more information, so I sent them the info. However, they sent me the wrong instructions. I emailed them again for help, but I never heard back.