Making a rom - Galaxy S III I9305 (4G LTE + 2GB RAM) Q&A, Help &

I used the latest ee rom from sammimobile to make a rom with android kitchen. Im a complete beginner to this and thought I had rooted, zip aligned and deodexed it. Signed it and it made a zip.
I flashed this zip and it got stuck at the boot logo. So i restored from cwm nandroid (which was of the same rom originally installed via mobile odin and rooted.) When it booted up I had no mobile signal.
I checked the imei and it had gone. I had backed up the nv data before hand but was unable to restore it due to connection issues.
I reflashed the same firmware(ee) via mobile odin and I had imei and signal again.
What is happening here? Can you back up a stock rom with cwm? Can I still flash other custom roms without fear of losing my imei. I like to try most new roms but im a bit worried about screwing up my phone.
Also does anyone know why my rom never worked. Like I say it was my first attempt
Thanks
Sent from my GT-I9305 using Tapatalk 2

Who knows what you have done wrong building a rom .
Can you back up a stock rom with cwm >>>>>YES but it will have rooted recovery .
Can I still flash other custom roms without fear of losing my imei>>> If you have EFS / NV backup.
jje

Why do you think I lost my imei? From the rom I made and if so why didn't the nandroid I made of stock rom with cwm restore my imei? It only came back from a fresh install of the same firmware?? Proper confused.
Sent from my GT-I9305 using Tapatalk 2

a nandroid backup doesn't touch the imei.
restoring the NV data is the only possible solution

I never restored nmy nv data tho and I got my imei back just by flashing stock rom again
Sent from my GT-I9305 using Tapatalk 2

right, I missed that part. don't know what caused it

Flashing back a stock rom is a known method of possible restore of failed EFS/NV .
But the word is possible rather than probable and not to be relied on .
jje

But now its back is it as it was before. As in free to flash roms as I please as long as they are legit I.E ripper rom and cm 10 roms etc?
Thanks
Sent from my GT-I9305 using Tapatalk 2

yes

Probably you don't put modem.bin in ROM package or put n a wrong place and updater-script cannot find it.

Cristiano Matos said:
Probably you don't put modem.bin in ROM package or put n a wrong place and updater-script cannot find it.
Click to expand...
Click to collapse
Im too scared to have another go incase I mess it up again!
Sent from my GT-I9305 using Tapatalk 2

Related

[Q] Can I Backup Stock Branded Rom?

Hi all,
I've spent most of my lunchbreak searching for the answer to this question but can't find much.
I've just had my phone back from repair where I had to flash O2 branded 2.2 before I sent it back and I had a lot of trouble finding the correct Rom. My returned phone now has branded 2.3.3 on it and I want to back it up myself in case it ever needs to go back again. Is this possible?
Thanks,
sixshot84 said:
Hi all,
I've spent most of my lunchbreak searching for the answer to this question but can't find much.
I've just had my phone back from repair where I had to flash O2 branded 2.2 before I sent it back and I had a lot of trouble finding the correct Rom. My returned phone now has branded 2.3.3 on it and I want to back it up myself in case it ever needs to go back again. Is this possible?
Thanks,
Click to expand...
Click to collapse
Yes it is possible, but you will need to root, instal cwm recovery and then make a nandroid backup
Sent from my GT-I9000 using XDA Premium App
slaphead20 said:
Yes it is possible, but you will need to root, instal cwm recovery and then make a nandroid backup
Sent from my GT-I9000 using XDA Premium App
Click to expand...
Click to collapse
Thanks for the info. Will the Nandroid backup be completely stock then? Won't the backup have CWM and be rooted?
sixshot84 said:
Thanks for the info. Will the Nandroid backup be completely stock then? Won't the backup have CWM and be rooted?
Click to expand...
Click to collapse
If you root, and install CWM ...CWM and root will remains after you install your nandroid backup. If you rooted flashing a kernel, you may unroot flashing a stock kernel..but it may fail..it may depends on the kernel, not 100% sure. And you need to have the stock kernel to flah any way.
I think you better look for a leeked copy of your stock firmaware today, before having any problem, and store it in a safe place.
Kthulhu_ESP said:
If you root, and install CWM ...CWM and root will remains after you install your nandroid backup. If you rooted flashing a kernel, you may unroot flashing a stock kernel..but it may fail..it may depends on the kernel, not 100% sure. And you need to have the stock kernel to flah any way.
I think you better look for a leeked copy of your stock firmaware today, before having any problem, and store it in a safe place.
Click to expand...
Click to collapse
I thought so, thanks. I've got my branded 2.2 firmware so I'll just use that in future if I need to send it back again and update through Kies.

No reception after flash with cwm.

I upgraded from icssgs 3 to 4.2 abd ever since i get no reception at all. No data, no calls no nothing. Wifi works though.
I have tried since and flashing several different roms and the problem persists. Has anyone had this problem before or does anyone have a possible solution?
Sent from my GT-I9100 using XDA App
Have you tried factory reset, cache wipe, advanced and dalvik cache wipe, and then re-flashing rom? Are you using teamhacksung build 16?
risking to sound stupid, by " No data, no calls no nothing" you mean "no signal"?
if you've tried the solution suggested by am2012, have you tried installing a different modem?
try flashing a modem...u can get one from here
http://forum.xda-developers.com/showthread.php?t=1158783&highlight=bootloaders
I have tried wiping and reflashing. I have also tried flashing different roms with different modems.
I reflashed the last rom that worked but the problem persisted.
I have had thoughts of flashing a rom with odin instead of cwm but i dont know if it should make a difference?
Thanx for the replys btw, all help is very appreciated.
Sent from my GT-I9100 using XDA App
Try wiping and resetting everything. Then put phone into download mode and odin a stock ROM. Then if things work start working again with your signal, flash rc4.2 again. I have flashed loads of ics roms and never had a problem I couldn't fix by going back to stock ROM. Try 2.3.6 the 'leaked one' from Sammobile.
By the way, you have got a i9000 international version haven't you?
Sent from my GT-i9000 using XDA App
Hey, just realised you have i9100. Have you used the right ROM for your phone? Does icssgs release for i9100?
Sent from my GT-i9000 using XDA App
Is ur imei at its place ???
If you've got an sII then icssgs is never going to work - go back to sII rom.
If you've got an sI then as sbnaul pointed out it is most probably your IMEI. Some users found their IMEI changed when upgrading to 4.2
Hopefully you've taken a backup of your efs - if so just copy the backup imei file over.
If not, there is still hope - flash stock gb 2.3 back onto the phone - this should restore the imei. Then take a backup of the efs folder, flash 4.2 and copy your backed up imei into efs
Thanks for the help.
I have 2 phones, one internarional sgs and an international s2.
I mostly use the s2 but i want the sgs to work nonetheless
Im gonna try reflashing the stock, i dont have any efs backups or such:/
I have been looking for a good stock rom but didnt find a good one. Im gonna look for the leaked sammobile release though so thanks for that.
How do i take the needed efs backup? Is it through cwm?
Thanks!
Sent from my GT-I9100 using XDA App
Modem Issue
ScrotzaN said:
I upgraded from icssgs 3 to 4.2 abd ever since i get no reception at all. No data, no calls no nothing. Wifi works though.
I have tried since and flashing several different roms and the problem persists. Has anyone had this problem before or does anyone have a possible solution?
Sent from my GT-I9100 using XDA App
Click to expand...
Click to collapse
I'm quite sure that this is a modem issue...
If you know, which ROM were you using previous to ICS where the reception was fine, then you can flash that modem.
(For eg.: it was 2.3.6 XXJVU in my case. So, I would require a JVU modem)
Here is a concise list of all the modems: http://forum.xda-developers.com/showthread.php?t=1158783
aaprocks said:
I'm quite sure that this is a modem issue...
If you know, which ROM were you using previous to ICS where the reception was fine, then you can flash that modem.
(For eg.: it was 2.3.6 XXJVU in my case. So, I would require a JVU modem)
Here is a concise list of all the modems: http://forum.xda-developers.com/showthread.php?t=1158783
Click to expand...
Click to collapse
Yes, I have tried that but it doesnt work.
But now I flashed the stock rom and I got the reception back. So now Im gonna root and try to backup the efs folder.
Thanks alot everybody to answered the thread.
There we go. Now it works again. I didnt even have to restore the efs folder.
I just flashed the stock rom, rooted and then flashed icssgs 4.2 and now it works.
Thanks everyone
full wipe , flash new rom worked for me
I've heard if you flash a stock ROM with Odin, then the problem with the IMEI (efs folder) is often done. Is this right?
Saimen2 said:
I've heard if you flash a stock ROM with Odin, then the problem with the IMEI (efs folder) is often done. Is this right?
Click to expand...
Click to collapse
Yup... that does the job...

Back up your stock gingerbread rom

Hello,
first a brief intro...i am not an android developer but I am a user and I love the OS.
However i have had a little trouble with the small issue of backing up stock ROM so that i can have the freedom to tinker with any custom ROM possible knowing that i can always fall back to my stock ROM if I don't like anything or something doesn't work.
I have the original ROM so i can flash it back whenever but not everyone has access to their stock ROM. so you must make a choice that once you flash a custom ROM, you cant go back.
So i am calling out to all the nice developers in the house...
1. Is this possible. is there a way one can do a backup of the stock ROM in the galaxy mini?
2. If its not possible at the moment, is there anyone willing to work towards ensuring its possible?
Like I said, I am not a developer but i could help in any little way i can to work with any willing developer towards achieving this.
Thanks.
yess is possible to backup your rom juste install ROM MANAGER and clic on backup is simple you can find it on android marcket ^^
I would not personally suggest Rom Manager since there are a lot of cases here that it bricked the phone. It is possible to backup your stock rom with cwm recovery. The problem is it can't be restored via the same recovery. This is a limitation of cwm. So Odin is still the best option to restore stock roms.. I do hope that restoring stock roms can be made possible thru cwm..
Sent from my GT-S5570 using XDA App
spawk said:
yess is possible to backup your rom juste install ROM MANAGER and clic on backup is simple you can find it on android marcket ^^
Click to expand...
Click to collapse
I have tried ROM manager and it doesnt even recognize the cmw recovery already installed. it requests to install a custom recovery and the SGM isnt listed among the supported devises so that wount work.
kitrax59 said:
I would not personally suggest Rom Manager since there are a lot of cases here that it bricked the phone. It is possible to backup your stock rom with cwm recovery. The problem is it can't be restored via the same recovery. This is a limitation of cwm. So Odin is still the best option to restore stock roms.. I do hope that restoring stock roms can be made possible thru cwm..
Sent from my GT-S5570 using XDA App
Click to expand...
Click to collapse
Have you actually backed up your stock rom using cwm?I have tried and each time i get an error that it couldnt mount the /system. And am seeking assistance to develop a means to back up and restore Stock ROMs in SGM.
with custom kernel with suport ext4 and convert rfs partition to ext4 partition you can backup your stock rom.
only need flash custom kernel. after that you can backup the rom.
galaxy S user have CF-root kernel for each rom. CF-root do this and root your phone and install CWR.
but for mini no any CF-root kernel
.i have changed my CWM by another one find here with godell thread I use "CWM5028.zip"
Dude, don't you try Rom Manager, it may brick your phone. CWM can't make stock rom backups as far as I know.
Enviado desde mi GT-S5570 usando Tapatalk
spawk said:
.i have changed my CWM by another one find here with godell thread I use "CWM5028.zip"
Click to expand...
Click to collapse
Yea...tried that still wont back up stock rom...
to make the backup of stock rom recovery is needed to be modded for work on bml partition layout it should also be compatible with rfs partitions
dhlalit11 said:
to make the backup of stock rom recovery is needed to be modded for work on bml partition layout it should also be compatible with rfs partitions
Click to expand...
Click to collapse
Has this been done by any one? or can you do it and then avail a working solution?
no am a member like you but squad can do this
dhlalit11 said:
no am a member like you but squad can do this
Click to expand...
Click to collapse
well squad gets alot of request and am sure he would hav done it by now because he has made several recoveries...but i will def ask him. it would b nice to have smeone else tho workin on it to take the pressure off the main developers.am doin a bit of research myself but havent made much headway:-(
Sent from my GT-S5570 using xda premium

[Q] Downgrade from JB 4.3 to stock 4.1.2 - IMEI error with EFS backup

Hey guys! Need some help here.
I know there are other threads on this forum about this but I've tried everything suggested to recover my IMEI but nothing works.
The problem is that I updated my Galaxy S3 to a custom rom with android 4.3 jelly bean, everything was okay, after that I decided to downgrade to the stock android 4.1.2 and my IMEI was not recognized any more, I must emphasize that before update from 4.1.2 to android 4.3, I did a backup of the EFS folder.
I restored the EFS folder with the 9 Steps to recover your imei guide on my new installed android 4.1.2 and I still got a wrong IMEI 0049... and Serial 00000... I have followed the guide lots of times and it stills the same.
I had read that it could be a modem MG6 problem in this post ... but now I'm with with stock 4.1.2 so that's discarded.
I also notice that it seems that the android os rewrites the nv_data.bin that I have previously copied into the EFS folder, is this possible?
Because in theory it should work:
I have a backup of the EFS folder got when I was 4.1.2.
I went back to Stock JB 4.1.2 rom.
I replaced the EFS folder with the "9 Steps to recover your imei", and it continues with the 0049 ...
Technical service want to charge $ 180 to restore it but it does not seem right for me when I have the backup and I could solve it.
Guys please some help!
Dude do you have a Nandroid backup from a previous rom? If yes restore it and you should recover your imei back, then retry to flash the new rom again. It worked for me!
Enviado do meu GT-I9305 utilizando Tapatalk 4
FAdrums said:
Dude do you have a Nandroid backup from a previous rom? If yes restore it and you should recover your imei back, then retry to flash the new rom again. It worked for me!
Enviado do meu GT-I9305 utilizando Tapatalk 4
Click to expand...
Click to collapse
Why would Nandroid restore IMEI if it has never backed up the EFS ???
JJEgan said:
Why would Nandroid restore IMEI if it has never backed up the EFS ???
Click to expand...
Click to collapse
It depends which recovery you use!
Enviado do meu GT-I9305 utilizando Tapatalk 4
I am aware that Philz lets you create a EFS backup on its own .
So pray tell the recovery that automatically backs up EFS in a Nandroid as it should be stickied in the faqs
JJEgan said:
I am aware that Philz lets you create a EFS backup on its own .
So pray tell the recovery that automatically backs up EFS in a Nandroid as it should be stickied in the faqs
Click to expand...
Click to collapse
Yes I had a nandrod backup that I did with CWR recovery but it didn't restore my efs folder.
peter325 said:
Yes I had a nandrod backup that I did with CWR recovery but it didn't restore my efs folder.
Click to expand...
Click to collapse
It wont as it does not backup EFS .
peter325 said:
Yes I had a nandrod backup that I did with CWR recovery but it didn't restore my efs folder.
Click to expand...
Click to collapse
Lol I'm staring to think that my efs backup is corrupted or something else ..cause everytime I copy my NV data.bin file it gets overwrited by default one...it is frustrating!
JJEgan said:
It wont as it does not backup EFS .
Click to expand...
Click to collapse
Enviado desde mi GT-I9300 usando Tapatalk 4
What phone do you have this is I9305 forum .
You have an identical post
http://forum.xda-developers.com/showthread.php?t=2452285
1. restore efs
2. got to /data/radio and delete nv files
peter325 said:
Hey guys! Need some help here.
I know there are other threads on this forum about this but I've tried everything suggested to recover my IMEI but nothing works.
The problem is that I updated my Galaxy S3 to a custom rom with android 4.3 jelly bean, everything was okay, after that I decided to downgrade to the stock android 4.1.2 and my IMEI was not recognized any more, I must emphasize that before update from 4.1.2 to android 4.3, I did a backup of the EFS folder.
I restored the EFS folder with the 9 Steps to recover your imei guide on my new installed android 4.1.2 and I still got a wrong IMEI 0049... and Serial 00000... I have followed the guide lots of times and it stills the same.
I had read that it could be a modem MG6 problem in this post ... but now I'm with with stock 4.1.2 so that's discarded.
I also notice that it seems that the android os rewrites the nv_data.bin that I have previously copied into the EFS folder, is this possible?
Because in theory it should work:
I have a backup of the EFS folder got when I was 4.1.2.
I went back to Stock JB 4.1.2 rom.
I replaced the EFS folder with the "9 Steps to recover your imei", and it continues with the 0049 ...
Technical service want to charge $ 180 to restore it but it does not seem right for me when I have the backup and I could solve it.
Guys please some help!
Click to expand...
Click to collapse
xorti said:
1. restore efs
2. got to /data/radio and delete nv files
Click to expand...
Click to collapse
Hey thanks for the response but that's another rare point, I have noticed that in other posts, and also you say, that there is a /data/radio folder but I don't have the radio folder, the only radio folder I found is /data/misc/radio but inside this one there isn't any NV file.
Enviado desde mi GT-I9300 usando Tapatalk 4
im having the exact same problem...
backup my efs with Ktool but its old 4.1.2, now seems nothing work, i even did an Odin flash of 4.1.2 but with mg4 rom with all the pit, bootloader, mode, modem, csc and try to restore yet imei is 0049.....
my back up efs isnt doing anything on old 4.1.2 and mg4.....
xtorm80 said:
im having the exact same problem...
backup my efs with Ktool but its old 4.1.2, now seems nothing work, i even did an Odin flash of 4.1.2 but with mg4 rom with all the pit, bootloader, mode, modem, csc and try to restore yet imei is 0049.....
my back up efs isnt doing anything on old 4.1.2 and mg4.....
Click to expand...
Click to collapse
i think you guys have s3 i9300 ? by the name of modem MG4 -MG6...i was haveing same problem on my I9300 and after 1 mont of flashing every file and guide that i can find i give up....-my SOLUTION was ....i sell it as defekt and buy i9305 LTE...much beter phone
had the same problem when downgrading to 4.1.2 from 4.3..my IMEI was 0049..so I flashed back the 4.3 (UK unbranded) version and IMEI came back..hope this will help
Successful Downgrade to stock 4.1.2 from 4.3
I had similar issue upgraded to UK Stock 4.3 from Samfirmware ad had a terrible experience. I came across this 4.1.2 stock rom for Germany that worked with no issues as this one has MG4 modem that reads EFS2 partition newly implemented by Samsung,
Product Code: MBC
PDA: I9300XXEMG4
CSC: I9300MBCEMH1
MODEM: I9300XXEMG4
simply flash it through ODIN
http://www.hotfile.com/dl/250954845/08fe425/I9300XXEMG4_I9300MBCEMH1_MBC.zip.html
If your S3 doesn't reboot on its own, enter Recovery Mode by pressing Volume Up + Power + Home button simultaneously and then performing a Data Wipe/Factory Reset and wipe any cache partition. Then select Reboot System Now and you should be good to go.
Hope your problem will also solved as mine. Click Thanks if it works
I managed to get mine back by going back to 4.3, thought i had bricked my phone. I then went to a newer 4.1.2 as above
How to know that backing up ime by efs error? I backed up my ime. I am afraid of it's error. Because i never try jb4.3. So i never check my backup my ime too. I attend try cm11. So can i downgrade from 4.4 to stock 4.1.2 without lost ime?
desiwizard said:
I had similar issue upgraded to UK Stock 4.3 from Samfirmware ad had a terrible experience. I came across this 4.1.2 stock rom for Germany that worked with no issues as this one has MG4 modem that reads EFS2 partition newly implemented by Samsung,
Product Code: MBC
PDA: I9300XXEMG4
CSC: I9300MBCEMH1
MODEM: I9300XXEMG4
simply flash it through ODIN
http://www.hotfile.com/dl/250954845/08fe425/I9300XXEMG4_I9300MBCEMH1_MBC.zip.html
If your S3 doesn't reboot on its own, enter Recovery Mode by pressing Volume Up + Power + Home button simultaneously and then performing a Data Wipe/Factory Reset and wipe any cache partition. Then select Reboot System Now and you should be good to go.
Hope your problem will also solved as mine. Click Thanks if it works
Click to expand...
Click to collapse
It's seems like that the ROM you posted is for i9300 and not for i9305 ..
And I also like to know if I'll get any problems after downgrading from CM 11 ?
Sent from my GT-I9305 using xda app-developers app
hoangphi0311 said:
How to know that backing up ime by efs error? I backed up my ime. I am afraid of it's error. Because i never try jb4.3. So i never check my backup my ime too. I attend try cm11. So can i downgrade from 4.4 to stock 4.1.2 without lost ime?
Click to expand...
Click to collapse
Just check the modem version used by the ROM you have used. if it is equal or greater than MG4, then my solution is hoped to work. I believe that older modem version do not modify the EFS structure therefore no worries for old ones.
---------- Post added at 03:22 PM ---------- Previous post was at 03:18 PM ----------
urban191 said:
It's seems like that the ROM you posted is for i9300 and not for i9305 ..
And I also like to know if I'll get any problems after downgrading from CM 11 ?
Sent from my GT-I9305 using xda app-developers app
Click to expand...
Click to collapse
I am sorry I don't own i9305 so cannot tell.
desiwizard said:
I had similar issue upgraded to UK Stock 4.3 from Samfirmware ad had a terrible experience. I came across this 4.1.2 stock rom for Germany that worked with no issues as this one has MG4 modem that reads EFS2 partition newly implemented by Samsung,
Product Code: MBC
PDA: I9300XXEMG4
CSC: I9300MBCEMH1
MODEM: I9300XXEMG4
simply flash it through ODIN
(SORRY CAN'T POST LINK DUE TO BEING A N00B)
If your S3 doesn't reboot on its own, enter Recovery Mode by pressing Volume Up + Power + Home button simultaneously and then performing a Data Wipe/Factory Reset and wipe any cache partition. Then select Reboot System Now and you should be good to go.
Hope your problem will also solved as mine. Click Thanks if it works
Click to expand...
Click to collapse
Made an account on here just to confirm that this method works. I downloaded the file which contained a single .tar, flashed via Odin but came to a boot loop. So cache partition wipe and factory reset brought me back to 4.1.2 and the IMEI is all good so I can connect to my mobile network fine. Thanks for that buddy, you're awesome

Backup IMEI?

Flashed a room and my IMEI disappeared, had zero service.
I was able to restore it by flashing stock OS using Odin. Then rooted, installed safestrap, and restored my rom backup.
Is there any way to back up the IMEI in case this happens again and Odin can't fix it?
Sent from my SM-G900F using Tapatalk
This is the rom that I flashed that broke the phone.
http://forum.xda-developers.com/showthread.php?t=2793657
Sent from my SM-G900F using Tapatalk
On my old S3, I used EFS professional to backup my efs partition, which contained the IMEI, to my computer. I have not tried it with my S5, because I don't flash many Roms.

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