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[WARNING! + GUIDE] Backup and Restore IMEI / NV Data Procedure for GT-I9305

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kanzi83
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Originally Posted by neeverr View Post
...solution (it works but not really always / I mean I'm still missing something):
wipe all --> flash the pre-rooted ROM --> wipe all --> flash the perseus kernel 32.1 ---> the phone baseband works 100%...
  • When you say Wipe All, you mean wipe data and dalvik?
  • Can you give us the link of the pre rooted ROMs you flash?




PDA: I9305XXBLL5
MODEM: I9305XXBLL5
CSC: I9305DBTBLL4


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scumpicule
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It will be fantastic if this method is working !!


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neeverr
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(Last edited by neeverr; 20th February 2013 at 01:32 PM.)
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I already posted the solution that partially (I can use perseus kernel only) solves my baseband issues.

point 1: if the i9305 EFS does not contain any personal data (i.e. IMEI that is stored in the NV Memory).. somebody could kindly upload his EFS image?
In case you are not comfortable in sharing his EFS, it would be a good starting point to know which files and folders are contained in it.

point 2: in my case the issue seems to be related to the BOOT.IMG (perseus kernel is replacing this partition only). According to this consideration my question would be: which kind of differencies there are between the custom boot.img (perseus) and a stock one? files? permission? drivers?
they are different in size... perseus is bigger...

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neeverr
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(Last edited by neeverr; 20th February 2013 at 01:33 PM.)
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Quote:
Originally Posted by kanzi83 View Post
  • When you say Wipe All, you mean wipe data and dalvik?
  • Can you give us the link of the pre rooted ROMs you flash?
1) it's the same, wipe the dalvik as well if you want

2) if I flash ANY stock/custom ROM the baseband is not detected... when I apply Perseus kernel (after a data/cache wipe) MY phone overcomes.
If I change back to ANY stock kernel (boot.img) the baseband switch back to UNKNOWN and the IMEI to NULL/NULL
 
Rekoil
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Originally Posted by neeverr View Post
so the key point for me is to understand why my phone baseband NOW works only with the PERSEUS kernel 32.1...

...which ADDITIONAL functions have this kernel compared to the stock one?

the interesting thing is that EFS partition (mmcblkp03) is not really important... the phone works even if it's 100% empty... this means that the IMEI is coded in some other place (and probably I messed up with this place)...

...in some way the PERSEUS kernel is able to solve the mess.

I hope my experience helps somebody else
I have this same problem as well, it's pretty frustrating not knowing why
sony xperia z1 compact d5503 lime green

previous phones
sony xperia z1 c6903 metallic purple - screen cracked, broken digitizer
sony xperia z c6603 royal purple - faulty backplate, returned
samsung galaxy s3 lte (gt-i9305n) marble white - sold... no more samsungs for me
htc one x glacier white - dead :'(
apple iphone 4s white - sold
 
GingaB
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Easy and painless. Thanks buddy!
Device: Samsung Galaxy Note 3
Network: T-Mobile UK
Rom: Omega Rom v21
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aldbeagle
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Cheers....saved my bacon....and my phone, small donation on its way.
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na_tra
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Hi all:
Will this method work on Sprint GN2?

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Blazing angel
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Hello all.

I have a Bell Galaxy S3 running stock 4.1.1 (dlk4) and a windows 8 pc. Whenever i try to run the program, it always crashes exactly when i connect my phone. Any ideas? Thanks in advance.
 
pieneman
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Anyone already an update for the IMEI Null / Null? The Perseus kernel is a solution but I'd like to know if there is a solution without this kernel.

Thanks.

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