Chosen Solution
Any suggestions would be great if its a possible fix even if it means having to solder motherboard parts i will happily learn how to do so :)
Replacing all the major chips on an iPhone with dual layer boards is not a good idea. You’ll spend a lot of money buying chips, risk destroying the phone and even after it’s done, you end up with a half-broken phone that worth nothing.
It is possible using a program like this one: www.tenorshare.com/products/4mekey-activation-unlocker.html