Disconnect the phone. The phone turns on automatically.
Insert the SIM card. Connect the phone to the computer. Activate the phone directly with 3U Tools.
The storage capacity has been upgraded to 256GB successfully.
Spread out the dialer board and make a phone call. All going well.
Once the underlying data has been written to the new NAND flash chip, if the phone cannot activate normally, we can just restore the phone.
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