Thanks for the encouragement, but I'm totally lost.
1) UPDFLASH.EXE in DOS seems to be notoriously unreliable. It always fails at flashing my SST chip in random places, even though I'm trying to flash a file that's 512 KB in size, the exact size of the chip. Haven't tried the original chip because I don't want to change it. I did use it to get a readback of the original chip, and the original chip is definitely reading back correctly in my programmer.
2) No matter what I do, the SST chip when stuck into the card either causes a kernel panic, or it doesn't appear at all in the system profiler, but my chip programmer reads it back as a perfect copy of what's on the original chip.
I guess maybe I should try a new SST chip, or try to find another Pm39LV040 chip (or an MX29LV040QC) instead. All I can possibly imagine is that maybe the chip I'm using is bad or something.
Edit: Oh, btw, the WiebeTech flasher works and successfully flashes the card. It works because my new chip is SST which it supports. But then I still get the black screen kernel panic after a reboot. That's true with both the WiebeTech and the FirmTek firmware.
1) UPDFLASH.EXE in DOS seems to be notoriously unreliable. It always fails at flashing my SST chip in random places, even though I'm trying to flash a file that's 512 KB in size, the exact size of the chip. Haven't tried the original chip because I don't want to change it. I did use it to get a readback of the original chip, and the original chip is definitely reading back correctly in my programmer.
2) No matter what I do, the SST chip when stuck into the card either causes a kernel panic, or it doesn't appear at all in the system profiler, but my chip programmer reads it back as a perfect copy of what's on the original chip.
I guess maybe I should try a new SST chip, or try to find another Pm39LV040 chip (or an MX29LV040QC) instead. All I can possibly imagine is that maybe the chip I'm using is bad or something.
Edit: Oh, btw, the WiebeTech flasher works and successfully flashes the card. It works because my new chip is SST which it supports. But then I still get the black screen kernel panic after a reboot. That's true with both the WiebeTech and the FirmTek firmware.