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Please, My iPhone 8+ burned the 64 GB Logic Card then I need to install a new one. Can I upgrade it with a 256GB one? Thanks a lot

Hello Technically you can but it could be hard to find this mother board on the market.. take in consideration that you need to get the mother board AND the associated home button in order to have touch id and home button working on your iphone.

A hobbyist successfully took his iPhone from 16GB to 128GB. But as he showed in a video detailing the process, it was a heck of a lot of work. You may want to read the story: https://www.cultofmac.com/540837/upgrade