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| "Jumping" NOR Flash via another identical board |
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| mogue:
--- Quote from: amyk on November 02, 2019, 07:47:49 pm --- --- Quote from: mogue on November 02, 2019, 06:10:30 am ---I can be certain that the S90XS v1.06 PGM file contains an update for its bootloader; this file successfully loaded into the Motif XS and got far enough to break it (see attached photo) --- End quote --- That looks suspiciously like the symptoms of the board in the other thread; also indicative of a bad flash IC ? --- End quote --- Well, I had just recently flashed back and forth between Motif XS version 1.12 and 1.60 a few times while investigating the Samba server (trying to use documented exploits to get a root shell on the Motif) and had no issues. I wouldn't think it makes too much sense to infer anything about hardware failure based on flashing the firmware for a different device. The S90XS also ran MontaVista Linux but from a user-facing perspective it had a much more reduced interface and less capabilities than the Motif XS. I don't have access to the service manual for the S90XS, so I don't know exactly how they differ on the PCB level. To me it seems likely that the flash ICs differ enough between the two models that this firmware update script just attempted to erase something that didn't exist, threw an error, and quit. |
| mogue:
--- Quote from: mogue on November 01, 2019, 09:49:57 pm ---The specific NOR Flash chip is the Spansion S29GL512N10TFI020, part of their "S29GL-P MirrorBit Flash Family", and I have found its datasheet. --- End quote --- Just dropping a correction here: that page is incorrect. While it claims to contain the datasheet for my flash chip, it actually links to the wrong one. The chip I'm working with is instead part of the "S29GL-N MirrorBit Flash Family" and this is the correct datasheet. It appears that some(?) PS3 consoles have a chip from the same family. I'm hoping that this means I will be able to "treat the Motif like a PS3" and use existing software as-is for the reading and writing process. I have a 360-clip and a Teensy++ 2.0 on the way. |
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