What you propose is plausible, doable even but not practical.
It’s the same issue as with iCloud lock; you can’t make something out of nothing.
If you had a good HB and it’s paired logic board, you could move over the CPU/SDRAM/NAND/BBCPU/EEPROM to another board. However, that is a lot of work and the opportunities to mess up await you at every corner. It’s much simpler to just use/repair the board that has a working HB paired to it.
This is what I usually reply when people ask the “wouldn’t it be possible to swap some IC’s” type of question:
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''Essentially, the CPU/NAND/Baseband CPU and EEPROM are all tied together with a secure code. While you can reprogram the NAND, there is no such access to the CPU or Baseband CPU. Therefore, the only way to make a logic board unlocked (or in this case, TOuchID swap) is to transfer those IC’s from a non locked board…that’s a whole lot of work for nothing as you haven’t made anything new, you risk damaging both boards (this is a very difficult repair with low success rates) and it would have been easier to just transfer the unlocked board in the first place.''
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''Essentially, the CPU/NAND/Baseband CPU and EEPROM are all tied together with a secure code. While you can reprogram the NAND, there is no such access to the CPU or Baseband CPU. Therefore, the only way to make a logic board unlocked ('''''or in this case, TouchID swap''''') is to transfer those IC’s from a non locked board…that’s a whole lot of work for nothing as you haven’t made anything new, you risk damaging both boards (this is a very difficult repair with low success rates) and it would have been easier to just transfer the unlocked logic board in the first place.''
What you propose is plausible, doable even but not practical.
It’s the same issue as with iCloud lock; you can’t make something out of nothing.
If you had a good HB and it’s paired logic board, you could move over the CPU/SDRAM/NAND/BBCPU/EEPROM to another board. However, that is a lot of work and the opportunities to mess up await you at every corner. It’s much simpler to just use/repair the board that has a working HB paired to it.
This is what I usually reply when people ask the “wouldn’t it be possible to swap some IC’s” type of question:
''Essentially, the CPU/NAND/Baseband CPU and EEPROM are all tied together with a secure code. While you can reprogram the NAND, there is no such access to the CPU or Baseband CPU. Therefore, the only way to make a logic board unlocked (or in this case, TOuchID swap) is to transfer those IC’s from a non locked board…that’s a whole lot of work for nothing as you haven’t made anything new, you risk damaging both boards (this is a very difficult repair with low success rates) and it would have been easier to just transfer the unlocked board in the first place.''