Flashing is notoriously unstable over USB 3.0 ports. Use a USB 2.0 port for the best success rate.
The drive allows reading but prevents any writing or formatting. phison ps2251 07 firmware
Has your favorite Kingston or Verbatim USB 3.0 drive suddenly become "Read Only," "Unrecognized," or shows up as "2307 PRAM"? This is often a firmware "panic" state rather than a hardware failure. The (also known as PS2307 ) controller is a workhorse in many popular flash drives, and with the right tools, you can often re-flash it to its factory state. Identifying Your Drive Flashing is notoriously unstable over USB 3
Burner File (BN07 .bin) *: A small piece of code loaded into the controller’s RAM to enable communication. Has your favorite Kingston or Verbatim USB 3
When a drive’s firmware becomes corrupted, it may fail to find a valid header in the NAND flash. In this state, the controller enters a identifying itself as a generic "2307 PRAM" device with 0 capacity. This often requires re-flashing using specialized "Mass Production" (MP) tools. Tools for Firmware Recovery