try unmount and reboot and check if when wake up is mount the sd from sd card option, maybe the phone made diferent assign to sd partition.
the partition in the sd card is only one, when the phone mount it , assign mmcblk0pl1 or mmcblk0pl0,
ej if you take out your sdcard without unmount, in the memory cache have this assigned partition up, if you insert other sdmemory or the same, the phone will assign or will mount it in diferent name partition. if the script of update find specific name partition , cant found it.
the partition in the sd card is only one, when the phone mount it , assign mmcblk0pl1 or mmcblk0pl0,
ej if you take out your sdcard without unmount, in the memory cache have this assigned partition up, if you insert other sdmemory or the same, the phone will assign or will mount it in diferent name partition. if the script of update find specific name partition , cant found it.
this wat i keep gettin
Android system recovery utility
E: Can't open /cache/recovery/command
Home+Back...etc
Alt+L- toogle log..etc
Alt+S-update.zip....etc
Alt+W-..etc
Installing from sdcard...
Finding update package...
E: CAn't mount /dev/block/mmcblk0pl1
(No such file or directory)
E: Can't mount SDCARD:update.zip
Installation aborted
Press HOme+Back to reboot