I have a Samsung Galaxy Ace S5830i rooted smartphone. I tried to update to the latest firmware update by the default update option in setting menu and it started downloading update file of 26MB. Now during updating it got stuck on 26% and the phone rebooted saying FIRMWARE UPDATE UNSUCCESSFUL.
I guess that it may be because my phone is rooted, but then I checked my phone space and found it reduced to 19 MB from 41 MB.
So what is taking that much space? Please help me free up some phone space.