Q: what does Re- partition do??? For upgrade do not click re partition then why do so when you are downgrading??
DDJG4 is a COMPLETE ROM with dbdata.rfs bla bla...if you click Re-partition when upgrading from DDJG4 to 2.2.1 then you will get error as below
E:Can't mount /dev/block/stl11
(Invalid argument)
update media, please wait....
update media, finished
# MANUAL MODE #
-- Applying Muti-CSC...
Installing Muti-CSC
mps_dat value: OPS
copy_multi_carrier from: OPS
multicsc : can not acces to /system/csc/OPS/system/
copy_common_data E:Can't mount /dev/block/stl11
(Invalid argument)
E:Can't mount /dev/block/stl11
(Invalid argument)
Reason for above error:
What happened is we probably flashed using Re-Partition but your PDA and/or CSC was missing the cache.rfs file.
If you tick Re-Partition, you MUST flash the complete set of firmware files (those that include cache.rfs and dbdata.rfs) otherwise you'll get errors like that.
To fix it you have to flash again with Re-Partition and make sure this time your PDA or CSC file has the cache.rfs and dbdata.rfs file inside. You'll lose all your app data, so backup first.
Next time when u flash, don't Re-Partition unless you know you need to. For example, the official JPM/JP6 Froyo update files do not come with a dbdata.rfs, so if you (wrongly) click Re-Partition when u flash them, you're gonna get a similar error but with the /dbdata partition instead.
Hope this helps.
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