[Galaxy S II Q&A, Help & Troubleshooting] kidxelor:
I have a S2 phone, out of warranty was bought from Spain under the Vodafone carrier. So is not stolen/imei blacklisted or other stuff i saw around.

Was bought by a good friend of mine, now he upgraded to S3 and his old S2 went to me, i think it was rooted, had superuser and acces to /efs/.nv_data.bin. to copy them from /device to /sdcard and also had busybox installed.

Phone shows even the airplane (with ariplane mode off) or the circle with the / inside and IMEI pops with " null/null ".

I did try GSII_repair and unlock software while i had the 4.1.2 software instaled as it came (from my friend) but no use.

I did try to get the nv_data.bin file with a hexedit and search for the 181468 (if i'm not wrong) line for the FF 01 00 00 00 stuff and change the 01 to 00, ofc nothing found about that line. Also between the .bak and .bin file since i remember was no difference at all.

I did try another method to search in the nv_data.bin for the SGH thing about the serial number, again without finding anything.

I tought a stock ROM will help, so i found a tutorial and with Odin3 v1.85 i've put this rom GT-I9100_XEU_I9100XWLP7_I9100XXLPS_I9100XEULP5.tar.md5 with the pda button. Of course the phone turn on and freeze on the S2 logo, than went on MENU+VOL Up+power, and did a whipe and turned on the phone. This went to 4.0.2 with :

Build nr.: IML74k.XWLP7

PDA: I9100XWLP7

CSC: I9100XEULP5

kernel

3.0.15-I9100XWLP7-CL340913

dpi@DELL134 #3

Again *#06# and babam, IMEI nothing there.

So i did upgrade again to 4.1.2 I9100XWLSE_I9100OXELS6_I9100XXLS8_HOME.tar.md5 with oding on the pda tab and now shows:

Build nr.: JZ054K.I9100XWLSE

kernel

3.0.31-889555

dpi@DELL126 #3

SMP PREEMPT KST 2013.

PDA:I9100XWLSE

CSC:I9100XELS6

Baseband unknown, Imei unknown but now shows something for SN, this: SN: 00195ef068dfae.

Also found some codes *#7465625# -wich shows nothing and than when i try to enter service menu for debung and stuff also shows nothing.

So found another tutorial to add 3 files in Odin, the PDA option (that i used 2 times) and the PHONE and CSC options with 2 more files to upload. I will download, try and post back.

Thanks in advance for any1 wich reads/reply/helps or talks on this theard.:good:

p.s. I tried a soft called SRS with 3 free options to change null imei to 0004999 or something and it tells that phone is not rooted in this moment, and he might be right and here cames the qestion, while you change ROM you lose the root and su because if not, than means phone was not rooted, but hard to think at that because i could acces the /efs folder. Complete mind**** here....

edit: i did try that rom 4.1.2 with I9100XXLSJ_I9100OXXLS1_OXX with the 3 files below

pda: CODE_I9100XXLSJ

csc: CSC_HOME_OXX_I9100OXXLS1

modem: MODEM_I9100XXLS6 Still no baseband/imei and yeah for sure phone is not rooted now, should i root the phone and than .... try what? throw it on window / use it as ipod device ?

edit: found what is suppoused to be my original fimware Latest firmware from Spain / Vodafone carrier (ATL)... i will try to flash it with odin and see what happens.

GT-I9100 Galaxy S II

PDA: I9100XWLSD

CSC: I9100ATLLSC

MODEM: I9100BULS1

Added: 2013-02-04