Not sure if you have tried, but iTunes allows one to do a Device Firmware Update (DFU) of any Apple device with an IPSW file (basically ios firmware) practicall

Not sure if you have tried, but iTunes allows one to do a Device Firmware Update (DFU) of any Apple device with an IPSW file (basically ios firmware) practically making them a brand new device. Although it is a bit of an overkill, because technically you would be overwriting the iOS firmware with a stock one. It does help. I had to use it on my aging iPad 2, a couple of times and haven't face any issues thus far. Here's a couple of links that could help: https://osxdaily.com/2010/11/23/how-to-use-ipsw-files/ https://osxdaily.com/2010/11/23/how-to-use-ipsw-files/ https://osxdaily.com/tag/ipsw/ https://osxdaily.com/tag/ipsw/ https://support.apple.com/en-in/HT201263 https://support.apple.com/en-in/HT201263 https://help.ifixit.com/article/108-dfu-restore https://help.ifixit.com/article/108-dfu-restore