Umm, silly question but did your "<modify params in block2.mod>" involve fixing up the CRC? If it didn't the PBL won't recognise it as valid and it looks like you erased the other MEM/PARMS/LDR from the flash so it has nothing to fallback to.
Cliff
-----Original Message----- From: Matt Callow [mailto:mc-spam@tesco.net]
./pbltool readflash 0x4000 0x400 block2 cp block2 block2.mod
<modify params in block2.mod>
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