[Solved] iPhone 7 ERROR 4013 NAND BAD AFTER FORMAT (No boot data found!!! eer:4)

[bobo bokota]

History: iPhone 7 ERROR 4013

No way to read hard disk information

>>> Initializing PCIe interface...
Hard disk has been detected...
>>> Initializing the hard disk...
Hard disk information not detected... bad hard disk contact or damaged partition table!!!...
This hard drive will report error: 9 or 6 or 14...
Please try [Erase All]!!! If you still can't detect the hard disk information!!! Write [write to the hard disk partition table]
>>> Operations are done...

Solution:
1-Erase All (Retain partition table and boot information)
2-Hard disk initialization & Read all the l'information
3-Back up the boot data (backup boot)
4-Erase All (Erase all data,delete partition table and boot information)
5- Hard disk initialization
You would get this message:

>>> Initializing PCIe interface...
Hard disk has been detected...
>>> Initializing the hard disk...
>>> Tip: This hard drive can be brushed normally...
Capacity: 32GB
Partition Table:
nvme00
>>> Operations are done...

>>> Reading hard disk information
No boot data found!!!
eer: 4
>>> Operations are done...

6-Reball Nand then restored that via 3utools or iTunes

7-Enter purple mode to write the backup
8-Then restored it
9- okay

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