Default hard spl issue
hi i got a issue installing the hard spl update i have a g1 with rc33 i went trought the steps and downgrade to rc29 install telnet and terminal emulator run the comands with no problem turn off the phone and turn it back on on recovery mode when i try to run the the spl update.zip i get this error:

installing from sdcard...
finding update package...
E: Can't mount /dev/block/mmcblk0p1 (or /dev/block/mmcblk0)
(Invalid argument)
E: Can't mount SDCARD: update.zip
Installation aborted.

i try like 3 time and get the same think. I try to search for issues like that but didn't found any. anybody know what can i do to get the hard spl to update please.

thanks!