This Firmware flash for Samsung Galaxy S21 FE 5G with the Model Number is SM-G990U1. Firmware Region is United States and CSC code is AIO . Make sure the Model Number are correct with you device. You can check the Model Number in Setting - About phone (Model Number), If phone can't start you can find it by flipping your phone or among the things you found in the box. This Firmware PDA is G990U1UES3CVF3 with OS S(Android 12) and the Firmware are build on Thu 14 Jul 2022 14:21:20 pm.