Originally Posted by arpitkh96
Use Dexo -sys. It will ignore odexed apps and will odex other apps
Sent from my GT-S5570 using XDA Premium 4 mobile app
Thanks mate, it helped. Actually, I completely changed to an non odexed ROM (This)
and gave dexo -all
command it odexed all of the ROM and the free space in internal memory had increased a lot. After installing GAPPS I again tried to run the command dexo -csa
it again failed as before. But when I try dexo -sys
command its done. All the apps in system folders are now odexed.