So iRecovery gets this after I switched out the NAND chip on an original iPhone using a heat gun.

[FTL:MSG] Apple NAND Driver (AND) RO
[NAND] Device ID 0xb614d5ec
[NAND] BANKS_TOTAL 4
[NAND] BLOCKS_PER_BANK 4096
[NAND] PAGES_PER_BANK 524288
[NAND]SECTORS_PER_PAGE 8
[NAND] BYTES_PER_SPARE 128
[FTL:MSG] FIL_Init [OK]
[FTL:MSG] BUF_Init [OK]
[FTL:MSG] FPart Init [OK]
[WMR:ERR] NAND format invalid (mismatch, corrupt, read error or blank NAND device)
[WMR:ERR] boolSignatureFound false boolProductionFormatVerified true nSig 0x0
************************************************** ****************************
************************************************** ****************************
AND: NAND initiaisation failed due to format mismatch or uninitialised NAND.
AND: Please reboot with reformatting enabled.


Yeah, I know it's blank. Anybody know how to reformat it? Or am I gonna need to swap NAND chips from another phone? Better yet, anybody know of a cheap way to dump/program 8GB NANDs?

Heat gun is not a good idea for using with a TSOP. That should be the reason of the failure.