[Sony Xperia S, Acro S, Ion] nqhuy90:
A. How to ROOT

Thanks to ARNOB for his method.

Screenshot

What you need:

- Rooted ICS Acro S with CWM.

- Flashtool.

- Acro S JB FTF (download here)

How

0. Download pre-rooted system partition:

6.2.B.0.211

Thanks to [B]ngonchan[/B]
http://d-h.st/nUy

or
Thanks to [B]Fotogravin[/B]
https://docs.google.com/file/d/0B6QNHOZ6XK_cQjFySlZhLVBkNTg/edit?usp=sharing

6.2.B.0.200

http://d-h.st/BN4
or
https://mega.co.nz/#!80AXRABa!DoHnpggxNU_yHcIFmJUZTwNcFv0t6g0xnnftP4iNx8o
or
http://www.fshare.vn/file/UV9BKO5TOD/

1. Copy it to your sdcard.

2. Boot into CWM.

3. Wipe Dalvik Cache.

4. Flash the zip file and reboot (power + vol up until your phone vibrates 4 times). (Need to unplug usb cable to turn off the phone)

5. Open Flashtool. Choose Flashmode and flash Acro S JB FTF that you downloaded.

6. Check Exclude System and check No final verification.

7. Continue flash it.

8. After finishing, wait your phone up and you will see SuperSU.

B. How to add CWM

Rooted is required.

0. Download CWM here

CWM6-cDM_v2.2.zip (2.6 MB)
https://mega.co.nz/#!xtIAlIhK!PgKZxmGP5kly69M5VgsipWY-CXUU2TKtAkF9Sl8n3zg
or
http://d-h.st/azd
or
https://copy.com/838kCu4hLhhV
or
https://docs.google.com/file/d/0Bzp5qNpb5LMEVzZQLXFlMHpsdXM/edit?usp=sharing

1. Enable USB Debuging & Unknow Source (from Security)

2. Extract that files and run cwm-install-en.bat

3. Follow the step in command prompt.

4. If successfully, reboot, keep press vol up when led's blue.

5. If you have problem with usb charging, flash this file via CWM.

fix_charger_for_AcroS.zip (159 KB)
https://mega.co.nz/#!IoYl3J4K!B-WG9hbzWe4wcChi_HpwLm7KX8VLvQQIBVWYpd-XzjQ
or
http://d-h.st/44N
or
https://copy.com/DTEYl41n2IJP
or
https://docs.google.com/file/d/0Bzp5qNpb5LMEdkJuQk96N0FkZUE/edit?usp=sharing

20130603 231646: busybox mount -o remount,rw /system
20130603 231646: RET=0
20130603 231646: busybox mkdir -p /system/btmgr/bin
20130603 231646: RET=0
20130603 231646: chown root.shell /system/btmgr
20130603 231646: RET=0
20130603 231647: chmod 755 /system/btmgr
20130603 231647: RET=0
20130603 231647: chown root.shell /system/btmgr/bin
20130603 231647: RET=0
20130603 231647: chmod 755 /system/btmgr/bin
20130603 231647: RET=0
20130603 231647: cp /data/local/tmp/busybox /system/btmgr/bin/busybox
20130603 231647: RET=0
20130603 231647: chown root.shell /system/btmgr/bin/busybox
20130603 231647: RET=0
20130603 231647: chmod 755 /system/btmgr/bin/busybox
20130603 231647: RET=0
20130603 231647: cp -p /system/bin/chargemon /system/bin/chargemon.bin.org
20130603 231647: RET=0
20130603 231647: cp -p /system/bin/chargemon /system/bin/charger
20130603 231647: RET=0
20130603 231647: cp /data/local/tmp/chargemon /system/bin/chargemon
20130603 231647: RET=0
20130603 231647: chown root.shell /system/bin/chargemon
20130603 231647: RET=0
20130603 231647: chmod 755 /system/bin/chargemon
20130603 231647: RET=0
20130603 231647: cp /data/local/tmp/recovery.tar /system/bin/recovery.tar
20130603 231647: RET=0
20130603 231647: chown root.shell /system/bin/recovery.tar
20130603 231647: RET=0
20130603 231647: chmod 644 /system/bin/recovery.tar
20130603 231647: RET=0

Source

Thanks to [MENTION=3773129]cray_Doze[/MENTION] (CWM)

PS: I lost all my data in sdcard when I using ARNOB's META-INF folder :crying: