Samsung Android - Repair EFS / IMEI WITHOUT BOX

•Fake IMEI (usually 004999010640000)
•Unable to download apps from the market
•Unable to unlock your SIM card using your PIN
•Weird apps are downloading automatically from the market
•Blinking SIM card icon on the top tray… ETC
let's try to solve, but NOT 100% working, i've based only on my GT-P1000.

00 = first root the phone, download ROOT EXPLORER + ADB
01 = extract "ADB_2.0.0.0.rar" to a FOLDER [ c:\adbtools ]
02 = at the command prompt, c:\adbtools\
03 = type "adb install rootexplorer.apk" and enter, after install
04 = open root explorer, open efs folder
05 = if you can find ".nv_data.bak" then it's possible to RESTORE [ if NONE THEN LEAVE THIS PROCEDURE ]
06 = now, you still need to backup nv_data.bin & .nv_data.bak or folder EFS BEFORE DO ANYTHING

[ IF YOU HAVE PREVIOUS BACKUP OF NV_DATA.BIN THEN PROCEED TO 14 ]

07 = at command prompt [ C:\adbtools\ ], type adb shell
08 = type su
09 = type cp /efs/nv_data.bin /sdcard/
10 = type cp /efs/.nv_data.bak /sdcard/
11 = type exit & exit
12 = at root explorer, tap sdcard, long tap nv_data.bin, tap rename [ add .BAK ]
13 = long tap .nv_data.bak, tap rename, type nv_data.bin
14 = at command prompt [ C:\adbtools\ ], type adb shell
15 = type su
16 = type cp /sdcard/nv_data.bin
17 = type rm -rf /efs/nv_data.bin.md5
18 = type exit & exit
19 = REBOOT YOUR PHONE

Quote:

**The md5 hash/signature (nv_data.bin.md5) is removed (rm) as the system will generate a new one. **Most likely your SIM code won’t work after this and you won’t be able to log into the phone** Pop off your SIM card, boot your phone and execute the following commands to change ownership of the file under ADB = at command prompt [ C:\adbtools\ ], type adb shell = type su = type chown 1001:1001 /efs/nv_data.bin

WARNING ! ! !

I take no responsibility to any damage caused by the methods written here,
DO AT YOUR OWN RISK ! ! !


REMINDER ! ! !

ALWAYS BACKUP YOUR EFS FOLDER
BEFORE DO ANYTHING ELSE