Next was the PS2307, slightly newer and fussy about MPTool version compatibility. Ethan swapped firmware files and adapted command flags. This controller required a manual NAND timing tweak; the manual's terse note—"adjust if flashing fails"—now made sense. He tuned timings in small increments until the write began to hold. Another successful flash brought a second recovery.
If you want, I can:
This happens if the MPTool version is too old to talk to your specific NAND flash matrix. Upgrade to a later version of MPALL (such as v5.03). phison ps225107ps2307 mptool install