just download the CWM install file
SO-03D / Acro S here
Xperia S here (big props to PuriketsuAngel)
connect phone normally via USB to your PC
go to unzipped folder, execute install.bat
that's it, CWM installed.
to go to recovery mode - just restart device (turn off, turn on) and while on the SE logo, simply tap the screen of your phone several times.
up and down volume keys will serve as your directional keys, camera button will serve as "select/ok" key.
and yep, back and home buttons work within the CWM environment.
note: when you choose to restart/reboot system now while on CWM screen, phone will turn off.(it does on mine). just restart normally - like pressing on the power button to turn it on.
Device must be rooted. we got a tut on how to root your device even on locked BL here
N O T E
This is a work around if restoring from previous back up is giving you error.
Back up :
Before doing a NAND back up - please do a manual reset of your device - no additional Apps must be installed. Also clear/delete any left over folders from your SD card.
Restart device then tap screen several times - once in CWM - clear cache/dalvik cache.
Then and only here would you do a back up for your ROM.
Before doing a restore - please do a manual reset of your device - turn device off, hold vol-up and power button at the same time until you get 3 vibrates.
Now you can do restore.
if this CWM version is still giving you errors : please provide a detailed account of the error message, a logcat will be appreciated.
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for a better Recovery feature and support, kindly visit this thread:
thanks to LeDelete