If you want to repair it yourself do you have access schematics? Try getting an account to zxy it's 64 dollars a year. You will need a multi meter, a microscope, most likely a hot air machine, a soldering iron, you will also need the higher to split and reattach the board (it's a split board and has contacts around the outside of the board). I would recommend buy some iCloud locked phones to practice on and watch a lot of videos on YouTube from jessa at ipad rehab ipadrehab.com and Jason at sts telecom ststelecom.com I hope this information helps. I would look at what it takes to repair a board on iPhone x,xs, xs max,xr they basically use the same board you will get the idea what it takes to do it.