[Q] Official and safe ROM update - Galaxy S III Q&A, Help & Troubleshooting

Hi everyone, my question is, can I update i9300 from 4.1.2 (XXELLA) to any 4.3 version or does it have to be for specific country?
I am curently running XXELLA that is for Poland, I was on XXEMC2 that is for Slovenia, and I am from Croatia, also to mention that original is XXEMC2 from my phone.
Also, is it safe for me to download 4.1.2 BTU XXEMG4 (UK) and flash over my current XXELLA, can i brick my efs? (I think it is an additional option to upgrade from btu version to 4.3).
Will i brick my EFS by updating to official stock 4.3 via Odin? I wan't to get to 4.3 version that supports OTA to 4.3 version MK6 (I heard it has many fixes), but I am scared to lose my network signal.
To sum up, what firmware do i need to get the MK6 update, is there any except BTU, and is it safe to update via Odin so my EFS won't brick.
Thanks.

You need to understand the basics before you do anything, sticky guides in general forum will guide you.
If you aren't confident then wait a week or two until MK6 is released in your country.
Sent from my GT-I9300 using Tapatalk

boomboomer said:
You need to understand the basics before you do anything, sticky guides in general forum will guide you.
If you aren't confident then wait a week or two until MK6 is released in your country.
Sent from my GT-I9300 using Tapatalk
Click to expand...
Click to collapse
It's a good option to wait, it isn't even official for download to flash via Odin, I am just curious over what will or will not happen, so I'm just searching for some direct answers, when I read all those stickies and threads I got very confused.
Can i just ask, will anything happen with network signal or efs if i flash XXEMG4 4.1.2 BTU or MJ9 BTU over my XXELLA with Odin? Just to know..

lsalamun said:
It's a good option to wait, it isn't even official for download to flash via Odin, I am just curious over what will or will not happen, so I'm just searching for some direct answers, when I read all those stickies and threads I got very confused.
Can i just ask, will anything happen with network signal or efs if i flash XXEMG4 4.1.2 BTU or MJ9 BTU over my XXELLA with Odin? Just to know..
Click to expand...
Click to collapse
I'm from Croatia too, and i have MJ9 BTU since day one and my phone is functioning perfectly, so no need to worry about network signal etc.
My recommendation is that you flash a MJ9 ROM with some custom kernel wich will remove the well known wake-up lag and battery drain that MJ9 has. Or you can just wait official OTA update for Croatia if you want. Personally, I moved away from official ROM 10 days after I got my S3. But as the boomboomer said before: read all the stickies to be 100% sure what are you doing

Hi, Before flashing anything or attempting to do anything make sure you read this and back up your EFS, If your already know about the risks then carry on but this is very helpfull. Thanks
http://forum.xda-developers.com/showthread.php?t=2393289
Sent from my GT-I9300 using xda app-developers app

bubr3g said:
I'm from Croatia too, and i have MJ9 BTU since day one and my phone is functioning perfectly, so no need to worry about network signal etc.
My recommendation is that you flash a MJ9 ROM with some custom kernel wich will remove the well known wake-up lag and battery drain that MJ9 has. Or you can just wait official OTA update for Croatia if you want. Personally, I moved away from official ROM 10 days after I got my S3. But as the boomboomer said before: read all the stickies to be 100% sure what are you doing
Click to expand...
Click to collapse
Ok, I'll try to flash BTU MJ9 over current XXELLA and will see what happens, I already have backed up my efs and also nand backup, but i think i can lose my efs/no network because my IMEI was repaired with z3x box, I heard that if it is repaired with z3x i cannot upgrade nor downgrade anymore, will see what happens, if anything goes wrong i have z3x so no need to worry i think, i'll also try to flash mg4 modem or patch it with Ariza if i will lose my signal..

There is a thread with patched modems for those that previously used ariza patch, which should enable you to connect to your network.
Sent from my GT-I9300 using Tapatalk

boomboomer said:
There is a thread with patched modems for those that previously used ariza patch, which should enable you to connect to your network.
Sent from my GT-I9300 using Tapatalk
Click to expand...
Click to collapse
I found only for 4.0 and 4.1.2 but not for 4.3 modems, and they are not patched, for patched i read that ariza patches modem but that it doesn't work with 4.3 android.
Can You please provide me the link to thread of patched modems?
Thanks!
Edit: I saw some patched modems for 4.3 but there is not MJ9 for i9300, also i tried extracting the modem.bin and patch it with zuluman patch and install through odin (put it under Phone section) but it fails, it says in the log something with bootloader, please provide me the patched M9 modem.
Edit2: Succesfully flashed patched MJ9, now IMEI is null/null, i'm getting really tired of this, going to take it to local servicer to update it for me, i think repairing imei with z3x box got it all messed up. And also finnaly i tried flashing the original modem back that gave me my IMEI back and than patch with ARIZA, nope, imei was 0049 etc.

Related

Want to go back to stock, which ROM should I install?

I haven't found a custom ROM I've liked, so I want to go back to the stock Samsung ROM for my i9300 (UK).
Which should I download and flash to my phone? I9300XXEMG4?
I would, it's best BTU firmware to date
slaphead20 said:
I would, it's best BTU firmware to date
Click to expand...
Click to collapse
I had to Google "BTU". I believe it's a UK firmware variant.
The other UK firmware variants seem to be: "BTC, CPW, H3G, O2I, O2U, ORA, OXA*, TMU, TSC, VIR, VOD, XEU"
What's the difference between them all, and is BTU the one I want?
BTU is unbranded like from carphone warehouse as opposed to branded that you get direct from the carrier
please try to remember; questions go in the q&a section. General isn't for questions
Sent from my GT-I9300 using Tapatalk 4 Beta
Holy crap, I9300XXEMG4_I9300OXAEMG4_BTU.zip is 850 MB :| Talk about bloated
They're all that big. Fyi mg4 alters efs. Flash that and you cant use any other baseband
Sent from my GT-I9300 using Tapatalk 4 Beta
rootSU said:
They're all that big. Fyi mg4 alters efs. Flash that and you cant use any other baseband
Sent from my GT-I9300 using Tapatalk 4 Beta
Click to expand...
Click to collapse
I don't know what that means.
If you dont know what that means, you definitely shouldn't be flashing things!
I'm not sure how basic I need to be so i'll be as basic as I can.
The s3 has an efs partition. This is a partition on your internal memory that stores your imei number among other things
The imei number is mucho important. Without a working imei number, your phone cannot operate on a mobile network. In otherwords, your phone is nothing more than a miniature wifi tablet.
Every official rom comes with a baseband. This is also known as modem or radio. This is software and its responsible for connecting your phone's telephony Services via the radio hardware to the network.
Many rooted users change their baseband in the hope that they get better signal / battery life
Now here is the problem. The latest official 4.1.2 changes the format of the efs. The mg4 baseband "updates" efs. The baseband works fine and can read the imei and the phone can continue to operate on the network. However this new efs format is not backwards compatible. This means any older baseband (packaged with any rom other than mg4) cannot read imei, meaning you cannot connect to the network. At the moment, only the mg4 baseband can read the updates efs so once you flash this rom (and baseband) it is not possible to use any other baseband. If you flash any rom older than mg4, it will only connect if you then put the mg4 baseband back on.... unless you backed up efs before flashing mg4... in otherwords, once flashed mg4, unless you backed up efs, you can never go backwards with the baseband. Or rom....
Sent from my GT-I9300 using Tapatalk 4 Beta
rootSU said:
If you dont know what that means, you definitely shouldn't be flashing things!
I'm not sure how basic I need to be so i'll be as basic as I can.
The s3 has an efs partition. This is a partition on your internal memory that stores your imei number among other things
The imei number is mucho important. Without a working imei number, your phone cannot operate on a mobile network. In otherwords, your phone is nothing more than a miniature wifi tablet.
Every official rom comes with a baseband. This is also known as modem or radio. This is software and its responsible for connecting your phone's telephony Services via the radio hardware to the network.
Many rooted users change their baseband in the hope that they get better signal / battery life
Now here is the problem. The latest official 4.1.2 changes the format of the efs. The mg4 baseband "updates" efs. The baseband works fine and can read the imei and the phone can continue to operate on the network. However this new efs format is not backwards compatible. This means any older baseband (packaged with any rom other than mg4) cannot read imei, meaning you cannot connect to the network. At the moment, only the mg4 baseband can read the updates efs so once you flash this rom (and baseband) it is not possible to use any other baseband. If you flash any rom older than mg4, it will only connect if you then put the mg4 baseband back on.... unless you backed up efs before flashing mg4... in otherwords, once flashed mg4, unless you backed up efs, you can never go backwards with the baseband. Or rom....
Sent from my GT-I9300 using Tapatalk 4 Beta
Click to expand...
Click to collapse
To sum it up dont flash the newest uk rom.
Sent from my GT-I9300 using xda app-developers app
CHEVYbarracuda1 said:
To sum it up dont flash the newest uk rom.
Sent from my GT-I9300 using xda app-developers app
Click to expand...
Click to collapse
Or even more summing it up...
"JUST... DONT!"
Or make sure to read a guide about flashing roms before you flash any rom. Especially about backing up your efs folder. A lot of the custom roms have options for doing that or do that automatically so chances are you may already have an efs backup, but better not risk it.
Well he could flash that rom but he has to back up his old efs first for getting safe.
But I do not think he is able to do that due to he is unknowing.
Hobbygamer27 said:
Well he could flash that rom but he has to back up his old efs first for getting safe.
But I do not think he is able to do that due to he is unknowing.
Click to expand...
Click to collapse
No one is explaining what is wrong with the one in I9300XXEMG4.
King Mustard said:
No one is explaining what is wrong with the one in I9300XXEMG4.
Click to expand...
Click to collapse
Wtf? I wrote a massive block of text a few posts back explaining EXACTLY what is wrong with it. Read it again!!!
Sent from my GT-I9300 using Tapatalk 4
King Mustard said:
No one is explaining what is wrong with the one in I9300XXEMG4.
Click to expand...
Click to collapse
Dude learn reading.
Flashing the BTU EMG4 Firmware will change your efs for ever, so if there is any bug or part in this firmware you do not like, the way for backflash will be complicated.
The old modems are not able to run with the new efs, so U have to flash the new modem on the older firmware.
Or you flash back your original efs back.
But this could be very dangerous because people are scared to do that.
Hobbygamer27 said:
Dude learn reading.
Flashing the BTU EMG4 Firmware will change your efs for ever, so if there is any bug or part in this firmware you do not like, the way for backflash will be complicated.
The old modems are not able to run with the new efs, so U have to flash the new modem on the older firmware.
Or you flash back your original efs back.
But this could be very dangerous because people are scared to do that.
Click to expand...
Click to collapse
Apologies.
So which is the latest "safest" stock ROM I should use?
King Mustard said:
Apologies.
So which is the latest "safest" stock ROM I should use?
Click to expand...
Click to collapse
Just instale a safe firmware. not MG4 AND MF6.... i am on XXEME2 ITS THE BEST.
MG4 is perfectly safe, it is a BTU firmware intended for the UK, it works extremely well and it is the users of this forum that don't know what they are doing that make it unsafe... It's as simple as that
danieldp1990 said:
Just instale a safe firmware. not MG4 AND MF6.... i am on XXEME2 ITS THE BEST.
Click to expand...
Click to collapse
I9300XXEME2 does not show up on a search for UK BTU on SamMobile, only I9300XXEMG4 (July 2013) and I9300XXEMB5 (February 2013).
slaphead20 said:
MG4 is perfectly safe, it is a BTU firmware intended for the UK, it works extremely well and it is the users of this forum that don't know what they are doing that make it unsafe... It's as simple as that
Click to expand...
Click to collapse
Does I9300XXEMG4 change much compared to the previous build??
King Mustard said:
I9300XXEME2 does not show up on a search for UK BTU on SamMobile, only I9300XXEMG4 (July 2013) and I9300XXEMB5 (February 2013).
Does I9300XXEMG4 change much compared to the previous build??
Click to expand...
Click to collapse
It have to be BTU? remember the BTU MG4 changes your imei for ever...... so its a risk to flash it. thats why i did not flash the MG4 and flash a earlier version not BTU XXEME2, its sooo nice..

Galaxy S3 Android 4.3 no signal

Yesterday I updated my i9300 to android 4.3
Baseband version I9300BUUGMJ3
Build number JSS15J.I9300XXUGMJ9
..and since then I haven't had any reception. My imei number, serial number, and everything else is same and still there, but I just can't get it to get reception again... When I go to my Mobile Networks, it says registered on network, but again, no reception. Then I tried installing the modem BUUGMJ3 with odin which didn't work. What can help? Stock firmware? Please help.
Thanks in advance.
currently experiencing the same issue mate. I can't seem to find a workaround/solution for this -__-
Is that base band supposed to work in your country? Find an modem later than EMGx, without a RIL, for your country and install that to test.
boomboomer said:
Is that base band supposed to work in your country? Find an modem later than EMGx, without a RIL, for your country and install that to test.
Click to expand...
Click to collapse
I've probably made a big mistake there, no it's meant for mine country, it's for the county near mine, Croatia, but I read somewhere that this doesn't matter.. :/
And by 'later than EMGx' I'm not sure what you mean, but I've flashed EMG4 modem which didn't seem to work.
Found something about flashing a previous modem and restoring your EFS folder, but I do not have my EFS folder backed up - I forgot to.
A few days ago I paid about $30 for a repair on my phone, I don't really want to send it off for repairs again, I really wonder if there is an fix to this
Follow the guides in general forum, stickies on how to flash back to 4.1.2 stock rom. Make sure it's at least EMG4 base band.
boomboomer said:
Follow the guides in general forum, stickies on how to flash back to 4.1.2 stock rom. Make sure it's at least EMG4 base band.
Click to expand...
Click to collapse
Yeah, about that...
first of all, sorry for bugging you so much..
but I downloaded the right stock firmware for my country, I9300XXEMG4_I9300BHTEMH1_I9300XXEMG4, but after I flash it via odin when the phone turns on it gets stuck in a loop showing the Samsung logo repeatedly...
Edit:
Okay, I managed to install the stock firmware 4.1.2 but it still is showing 'Emergency calls only', the modem is xxemg4...
Delko said:
Yeah, about that...
first of all, sorry for bugging you so much..
but I downloaded the right stock firmware for my country, I9300XXEMG4_I9300BHTEMH1_I9300XXEMG4, but after I flash it via odin when the phone turns on it gets stuck in a loop showing the Samsung logo repeatedly...
Edit:
Okay, I managed to install the stock firmware 4.1.2 but it still is showing 'Emergency calls only', the modem is xxemg4...
Click to expand...
Click to collapse
how about your IMEI/Serial numbers? are they still the same before you downgrade and flashed the XEMG4 modem? mine are the same with SN/IMEI so I guess that's why it worked. I just took the risk cause I was really pissed experiencing the lag and the battery drain in 4.3.
Do factory reset from settings option in touch wiz, make sure the imei and serial number match the label under your battery.
If still no good then try another SIM in your phone, final steps would be restore efs backup then repair centre.
thehavoc said:
how about your IMEI/Serial numbers? are they still the same before you downgrade and flashed the XEMG4 modem? mine are the same with SN/IMEI so I guess that's why it worked. I just took the risk cause I was really pissed experiencing the lag and the battery drain in 4.3.
Click to expand...
Click to collapse
Well it's all the same as it used to be. Could it be that the modem I had before EMG4 changed the format of my efs folder?
boomboomer said:
Do factory reset from settings option in touch wiz, make sure the imei and serial number match the label under your battery.
If still no good then try another SIM in your phone, final steps would be restore efs backup then repair centre.
Click to expand...
Click to collapse
Did a factory reset, imei, s/n same.
Android 4.1.2 EMG4 modem still no reception.
It seems that MGX modem has change ur IMEI from /efs1 to /efs2. MGX modem seems to support only 4.3 roms (due to some security issue).
It is not recommended,but u could flash an older rom with modem (get from www.sammobile.com) then restore an efs backup (if u did some) from /efs2 to /efs1
Sent from my GT-I9300 using xda app-developers app
Samsung Galaxy S3 i9300 "not Registered on Network" after 4.3 I9300XXUGMJ9 Update
I recently installed 4.3-official-I9300XXUGMJ9 on my Samsung Galaxy S3 (i9300) and everything went fine. I was upgrading from 4.1.2 but now I am facing “Not Registered on network” Issue. I tried Arzia Patch, tried falshing Modems (I9300XXLG8 and BUUGMJ3 ) nothing Works.
FYI: My serial Kay or IMEI is not 0000 they are fine.
Here’s the list from Setting->About Device->Status<br>
Network: unknown<br>
Service State: Out of service<br>
Mobile Network State: disconnected<br>
Device Status: Official
Also My Sim works fine in other Phones. Any help will be greatly appriciated.
dmarkweb said:
I recently installed 4.3-official-I9300XXUGMJ9 on my Samsung Galaxy S3 (i9300) and everything went fine. I was upgrading from 4.1.2 but now I am facing “Not Registered on network” Issue. I tried Arzia Patch, tried falshing Modems (I9300XXLG8 and BUUGMJ3 ) nothing Works.
FYI: My serial Kay or IMEI is not 0000 they are fine.
Here’s the list from Setting->About Device->Status<br>
Network: unknown<br>
Service State: Out of service<br>
Mobile Network State: disconnected<br>
Device Status: Official
Also My Sim works fine in other Phones. Any help will be greatly appriciated.
Click to expand...
Click to collapse
Ariza patch only works on older modems (efs v1 modems). So, that wont help.
You said you flashed the zuluman modems but.... did you flash the patched kernels too? You need the patched kernels for the patched modems to work. I don't know why, but that's what zuluman says (according to him, the kernel has a modem signature check and it wont work if the modem was modified).
Gonzakpo said:
Ariza patch only works on older modems (efs v1 modems). So, that wont help.
You said you flashed the zuluman modems but.... did you flash the patched kernels too? You need the patched kernels for the patched modems to work. I don't know why, but that's what zuluman says (according to him, the kernel has a modem signature check and it wont work if the modem was modified).
Click to expand...
Click to collapse
Sorry didn't tried flashing kernal. since I didn't find that file, because wasn't available for download. can you help me find a combination of Modem+kernal??
Thanks
dmarkweb said:
Sorry didn't tried flashing kernal. since I didn't find that file, because wasn't available for download. can you help me find a combination of Modem+kernal??
Thanks
Click to expand...
Click to collapse
Here are all the patched modems and kernels made by zuluman.
https://drive.google.com/folderview...&usp=sharing&tid=0B6MIUd7HJudAbU5YaGkzOUowMG8
In my opinion you should flash the latest official firmware and download the appropiate modem and kernel from that google drive.
You can download the latest official firmware from the general section of this forum.
Good luck.
Remember to always have an efs backup!
Great thanks!
Gonzakpo said:
Here are all the patched modems and kernels made by zuluman.
https://drive.google.com/folderview...&usp=sharing&tid=0B6MIUd7HJudAbU5YaGkzOUowMG8
In my opinion you should flash the latest official firmware and download the appropiate modem and kernel from that google drive.
You can download the latest official firmware from the general section of this forum.
Good luck.
Remember to always have an efs backup!
Click to expand...
Click to collapse
Flashing the Modem + Kernal after rooting the Phone works for me. I have flashed it using CWM.
Thanks once again.
the same problem with signal
hello,
i've the same problems with my s3. i flashed it OTA to Android 4.3
After this i had no signal. ...
When i found this thread i was so happy. BUT!!!
i downloaded all the modem and kernel files from the google drive and wanted to flash them (Patched_XXUGMK6_xxx.zip) with cwm recovery (latest version).
whenever i want to do this, i get the following message and the update aborts: "E:Can't copy META-INF/com/google/android/update-binary"
what can i do? Can i flash them with odin, too? Or does anybody have another idea?
here are some Infos about my Phone:
Android-Version: 4.3
Baseband: I9300XXUGMK6
Kernel: 3.0.31-2191747
[email protected] #1
Tue Nov 26 16:57:12 KST 2013
Build: JSS15J.I9300XXUGMK6
hmm...
can nobody help me? ...
sorry for spamming, but i've got a problem without a phone
greetz,
Carpe.
You said your imei & serial is ok but you cannot register to network. Have you paid your bills?
But if it's corrupted serial number.
Try this guide.
thx for your answer.
Payed my bills? ... uuuuuups!
back to topic: i've flashed my phone back to 4.1.2 for the moment. Network seems to work. ... i'll try some things and give a feedback here. ...
You have to flash an Android 4.3 modem for it to work I think but as your on 4.1.2 now I guess it doesn't matter anymore
Sent from my GT-I9300 using Tapatalk

Not Registered On Network

Before someone tells me, YES I know this is a common problem and YES I know there are lots of thread that talk about this particular subject.
But I think I'm having a different problem.
I had a I9300 unbranded that, for some reason, didn't wanted to update through Kies or OTA. But It could make calls and send txt msgs.
I decided to update it manually using ODIN to the latest official firmware for my phone (XEF - France). I downloaded it from Sammobile. Everything went perfect. Then I wiped everything to just to be safe.
Everything works great. Wifi, Apps, everything. Except making calls or sending txt msgs. It says "not registered on network".
My IMEI is still the same as before (the efs didn't get corrupted I guess).
Anyway, I have a backup from every partition. So I can get back to the previous state. But I want to fix this problem! Does anyone knows what's wrong?
I use to have this:
PDA: I9300XXBLH3
MODEM: I9300XXLH1
CSC: I9300XEFBLH2
Product Code: XEF
Country: France
And I flashed this:
PDA: I9300XXEMG4
MODEM: I9300XXEMG4
CSC: I9300XEFEMG2
Product Code: XEF
Country: France
Did I do something wrong?
You're not having a different problem at all.
You've installed an MG4 modem
Start reading the topics on mg4 modem flashing
RickEphraims said:
You're not having a different problem at all.
You've installed an MG4 modem
Start reading the topics on mg4 modem flashing
Click to expand...
Click to collapse
Would you mind telling me what's exactly the problem I'm having?
I have another i9300 with the same modem and that one works fine!
Your original modem was version one but when you installed the mg4 modem and it changes your EFS to version two.
All sorts of problems can happen now.
Try installing patched Mg4 modem which is found somewhere on here
RickEphraims said:
Your original modem was version one but when you installed the mg4 modem and it changes your EFS to version two.
All sorts of problems can happen now.
Try installing patched Mg4 modem which is found somewhere on here
Click to expand...
Click to collapse
Oh...f*ck!
I used the firmware that was supposed for my phone. Nothing else. Everything stock. I've downloaded it from Sammobile. I can't believe it!
My IME is OK. It's the same I used to have before (when it worked). Are you sure that my EFS is wrong now?
Can't I flash another firmware? I still have my EFS backup.
Which one should I've had flashed of these?
sammobile -> /firmwares/1/?model=GT-I9300&pcode=XEF#firmware
(Sorry I'm not allowed to post links yet)
If you backed up your EFS before the upgrade , you have two choices.
Go back to the original firmware and restore your EFS from backup or
Install patched mg4 modem found here on forums.
Sometimes the modem is not compatible with your region.
You can flash any of the newer modems available here as well.
You just can't install the older modems as your EFS has been changed to EFS version 2
RickEphraims said:
If you backed up your EFS before the upgrade , you have two choices.
Go back to the original firmware and restore your EFS from backup or
Install patched mg4 modem found here on forums.
Sometimes the modem is not compatible with your region.
You can flash any of the newer modems available here as well.
You just can't install the older modems as your EFS has been changed to EFS version 2
Click to expand...
Click to collapse
I've been reading this: http://forum.xda-developers.com/showthread.php?t=2377731
But I still don't undestand something. My IMEI is showing correctly. Shouldn't the phone work anyway regardless of the Modem version?
The problem on the modem version is that once is changed, you can't revert back unless you have an EFS backup. But that doesn't explain why my phone is not working. Am I right? I mean, it should work! I have another i9300 with the same modem and it works...
Are you sure this is my problem? I don't see the logic behind your sugestion.
Flashing a full stock rom, EMG4, including the modem shouldn't break anything. You say your phone had issues before you flashed, did it have any unlock or serial (ariza) patches applied?
If so then they won't work on efs v2 and you'll need to apply the patched modem, or flash an earlier rom (from before EMG4) then restore your efs backup.
Sent from my GT-I9300 using Tapatalk
boomboomer said:
Flashing a full stock rom, EMG4, including the modem shouldn't break anything. You say your phone had issues before you flashed, did it have any unlock or serial (ariza) patches applied?
If so then they won't work on efs v2 and you'll need to apply the patched modem, or flash an earlier rom (from before EMG4) then restore your efs backup.
Sent from my GT-I9300 using Tapatalk
Click to expand...
Click to collapse
My phone was rooted and it didn't update though official methods (I don't know why!). I wanted to leave it to stock. That's why I flashed the stock rom. Thanks god I did my backup. But I want to keep this version, It is official and it's the latest one. It should work!
I've bought the phone on Amazon and it came already rooted to my surprise. I just wanted to return it to stock, Should I start worring?
I actually backed up everything except USER DATA partition. So I can still take a look at the system partition I used to have (I guess...).
My previous issues where related to my phone not wanting to update. But the network connectivity was ok.
If I flashed a new stock rom... can I still have remanents from the previous rom? I also wiped everything. Does that make any sense? (sorry I'm kind of new in all this).
PD: I'm getting scared!!! :crying:
Best go read the efs 'know this stuff' thread in general forum, stickies for more information and links to help.
Sent from my GT-I9300 using Tapatalk
Sounds like something got screwed during the update. Installing the patched mg4 modem should fix it
---------- Post added at 09:01 AM ---------- Previous post was at 09:00 AM ----------
Yes reading the stickies is the best way to get the answers you require. Each problem encountered is slightly different.
RickEphraims said:
Sounds like something got screwed during the update. Installing the patched mg4 modem should fix it
---------- Post added at 09:01 AM ---------- Previous post was at 09:00 AM ----------
Yes reading the stickies is the best way to get the answers you require. Each problem encountered is slightly different.
Click to expand...
Click to collapse
The stick says "Also it would seem, Phones that had this patch ON EFS v1 ROMS will break their IMEI if they upgrade to EFS v2 ROMS."
My IMEI is ok. So I guess I didn't have ariza patch installed. That's a relief.
Anyway... I think I'll wait a bit. Maybe it'll fix itself ( I'm just lying to myself here haha).
Ok more question RickEphraims. Why exactly I need a "patched" modem? I don't want to revert to EFS v1. I just want my phone to work properly. Wouldn't it the same to flash stock MG4 modem again?
I'm no expert but the patched MG4 modem has worked for lots of people. It's still an MG4 modem.
RickEphraims said:
I'm no expert but the patched MG4 modem has worked for lots of people. It's still an MG4 modem.
Click to expand...
Click to collapse
Ok. Thanks.
I will try to flash this version:
And then restore the EFS partition.
Or should I do it the other way (efs first and then flash).
I want to stay official. This is not a phone I will be using so I don't want to leave a root in place or anything like that.
Any advice on this regard?
Flash original firmware and restore EFS.
That should put it back to stock
---------- Post added at 09:53 AM ---------- Previous post was at 09:51 AM ----------
I'm not really qualified to give you advice.
I'm just speaking from experience of what I've done to fix mine after flashing an MG4
I hadn't backed up EFS so it was way harder
Gonzakpo said:
Before someone tells me, YES I know this is a common problem and YES I know there are lots of thread that talk about this particular subject.
But I think I'm having a different problem.
I had a I9300 unbranded that, for some reason, didn't wanted to update through Kies or OTA. But It could make calls and send txt msgs.
I decided to update it manually using ODIN to the latest official firmware for my phone (XEF - France). I downloaded it from Sammobile. Everything went perfect. Then I wiped everything to just to be safe.
Everything works great. Wifi, Apps, everything. Except making calls or sending txt msgs. It says "not registered on network".
My IMEI is still the same as before (the efs didn't get corrupted I guess).
Anyway, I have a backup from every partition. So I can get back to the previous state. But I want to fix this problem! Does anyone knows what's wrong?
I use to have this:
PDA: I9300XXBLH3
MODEM: I9300XXLH1
CSC: I9300XEFBLH2
Product Code: XEF
Country: France
And I flashed this:
PDA: I9300XXEMG4
MODEM: I9300XXEMG4
CSC: I9300XEFEMG2
Product Code: XEF
Country: France
Did I do something wrong?
Click to expand...
Click to collapse
Easiest to try and check COULD BE:
1. Goto setting-> More Networks-> Mobile networks -> Network operators
2. Search for network service provider and select it !
Ok. So I flashed the previous official stock firmware (efs v1). As expected, the IMEI wasn't ok. So I restored my EFS v1 backup. IMEI was ok again. But I still get "no network".
I'm now going back to the original firmware (4.0.4) to see if it starts working again.
The phone is unbranded and apparently from France (XEF). Can I flash any other firmware? France is not my country although firmware 4.0.4 worked alright.
Also, Is there a way to know if Ariza patch was installed before I got the phone?
Check the phone serial number matches the one under the battery. Ariza patch fixes serial number problem on efs v1 only, it didn't fix imei issues.
If it's an i9300 then any firmware will work, you say 'apparently' from France, you should know this information -it is suspicious that do not.
Sent from my GT-I9300 using Tapatalk
News news. I flashed back the original firmware 4.0.4. It didn't work.
To my surprise, the serial number is 00000. THAT is my problem. And I now undestand why it was rooted from the start, probably it had some sort of patch to make it work (like ariza).
Now I'm not sure what to do. Send it to repair (I WILL be expensive in my country) or try the zuluman patched modem. But I guess flashing the patched modem is postponing the inevitable...
What a luck...
There was a post in general forum where a guy edited a file in efs folder to restore serial, you can try that or update to EMG4 rom and apply the patched modem.
You will probably find patched modems get released for newer roms, don't stay on older firmware -they cause SDS.
Edit: the thread about restoring serial I'd actually in q&a, http://forum.xda-developers.com/showthread.php?t=2544109
Sent from my GT-I9300 using Tapatalk

No more 4.4 roms?

Hi all,
Been facing a weird issue ever since I flashed official 4.3 (NB6 with NA8 baseband) with Odin.
I've been able to flash roms back and forth earlier, but ever since the "official" 4.3, I no longer get network signal in KK roms. IMEI is empty and baseband is unknown. WiFi works fine though.
Tried flashing different modems but nothing works. The closest I got to getting a signal was for 1 second and then dropped (keeps getting and dropping). Searched the forums but it seems to be very rare.
Always have to restore to official 4.3 via Odin to get a working phone
Any ideas on this or maybe Sammy doesn't like me anymore ?
~ RazorMC
RazorMC said:
Hi all,
Been facing a weird issue ever since I flashed official 4.3 (NB6 with NA8 baseband) with Odin.
I've been able to flash roms back and forth earlier, but ever since the "official" 4.3, I no longer get network signal in KK roms. IMEI is empty and baseband is unknown. WiFi works fine though.
Tried flashing different modems but nothing works. The closest I got to getting a signal was for 1 second and then dropped (keeps getting and dropping). Searched the forums but it seems to be very rare.
Any ideas on this or maybe Sammy doesn't like me anymore ?
PS: I tried sammy's 4.3-based roms and all was ok, but the official update really messed things up bad.
~ RazorMC
Click to expand...
Click to collapse
I Was Having the same problem,not with my Phone,but an Friend Phone. No imei and Hardware serial changed. Resolved using my Samsung Box. Maybe you need one of those. i think is the last stand :good:
could be a csc problem
i am not sure though
also was the firmware for your region
below link may help
http://forum.xda-developers.com/galaxy-s3/help/i9300-service-sim-card-gps-fix-solution-t2738219
dheeraj (dhlalit11) said:
could be a csc problem
i am not sure though
also was the firmware for your region
below link may help
http://forum.xda-developers.com/galaxy-s3/help/i9300-service-sim-card-gps-fix-solution-t2738219
Click to expand...
Click to collapse
I had seen the thread earlier but it doesn't mention much except cm 10.1 and "some" setting lol.
Firmware is right (UAE) according to sammobile. I will look into CSC though. I used to be able to flash from official 4.1.2 to TW-based and AOKP-based 4.3 and 4.4 as well, but the official 4.3 firmware was bad news (pretty smooth rom though)
I'm guessing that the NB6 fw hampers baseband/radio to prevent KK roms from reaching S3 users. Kind of like a hidden Knox or something.
~ RazorMC
Tried CM 10.1.3 but no signal even with patched modem MG4.
This is really frustrating lol. I got the S3 to play with roms and now it's over?
Any other ideas ppl on what I could do for this?
~ RazorMC
This is rather an EFS problem than CSC.
Read the EFS threads.
hey
RazorMC said:
Hi all,
Been facing a weird issue ever since I flashed official 4.3 (NB6 with NA8 baseband) with Odin.
I've been able to flash roms back and forth earlier, but ever since the "official" 4.3, I no longer get network signal in KK roms. IMEI is empty and baseband is unknown. WiFi works fine though.
Tried flashing different modems but nothing works. The closest I got to getting a signal was for 1 second and then dropped (keeps getting and dropping). Searched the forums but it seems to be very rare.
Always have to restore to official 4.3 via Odin to get a working phone
Any ideas on this or maybe Sammy doesn't like me anymore ?
~ RazorMC
Click to expand...
Click to collapse
Tried flashing MG4 modem????? :cyclops::cyclops::cyclops:
Benko111 said:
This is rather an EFS problem than CSC.
Read the EFS threads.
Click to expand...
Click to collapse
One thing I came across was to downgrade efs from v2 to v1 using the rescue firmware. I don't know if that is safe or will it even work.
shazzy1 said:
Tried flashing MG4 modem????? :cyclops::cyclops::cyclops:
Click to expand...
Click to collapse
Tried it, doesn't work
I'm stuck on official 4.3.
~ RazorMC
Install Samsung kies 3 from here
http://www.samsung.com/uk/support/usefulsoftware/KIES/
Run kies then go to Tool > Firmware Upgrade and Installation
Follow the on screen instructions, this should completely reset the phone to a working condition.
MK6 is stable
Try to use MK6 complete suite, then apply MK6 patched modem and kernel not only patched modem. I don't know why people say flash MG4 modem, it will never work alone. You must need patched kernel to make it work or use ariza patch in older releases.
ag4751 said:
Install Samsung kies 3 from here
http://www.samsung.com/uk/support/usefulsoftware/KIES/
Run kies then go to Tool > Firmware Upgrade and Installation
Follow the on screen instructions, this should completely reset the phone to a working condition.
Click to expand...
Click to collapse
I prefer Odin over Kies any day. It's better for flashing imo.
Point is, I can use stock 4.3 rom without any problems, but my issue is that I can no longer change to non-TW roms, esp KK.
galliard said:
Try to use MK6 complete suite, then apply MK6 patched modem and kernel not only patched modem. I don't know why people say flash MG4 modem, it will never work alone. You must need patched kernel to make it work or use ariza patch in older releases.
Click to expand...
Click to collapse
Gonna try this now. I'm aiming for KK roms, so I guess Ariza won't help me here.
PS: I can get stock 4.3 without any problems. The signal problem occurs in non-TW roms only. I wanted signal on a 4.4-based rom.
~ RazorMC
RazorMC said:
One thing I came across was to downgrade efs from v2 to v1 using the rescue firmware. I don't know if that is safe or will it even work.
Tried it, doesn't work
I'm stuck on official 4.3.
~ RazorMC
Click to expand...
Click to collapse
can you tell me what error is thrown????
(i) you have CWM r8?
(i) download a cwm flashable MG4 Modem, looks like your phone has an EFS issue (had this issue once).
shazzy1 said:
can you tell me what error is thrown????
(i) you have CWM r8?
(i) download a cwm flashable MG4 Modem, looks like your phone has an EFS issue (had this issue once).
Click to expand...
Click to collapse
I don't get any signal on KitKat roms. IMEI is empty and baseband is unknown in "About" section. That is my issue.
Stock 4.3 works fine for me
I've tried MG4 and MK6 modem and restoring efs via Philz Recovery 6.07.9 but no luck. I get a network signal that keeps dropping most of the time. This is strange because I haven't come across this problem before. Everytime I have to flash stock via Odin.
I need to find out why this happens so I can help others if they have the same issue.
EFS is ok and not damaged at all. The problem is that the system can't read the EFS, but I can't figure out what I need to do to get it to work.
~ RazorMC
RazorMC said:
I don't get any signal on KitKat roms. IMEI is empty and baseband is unknown in "About" section. That is my issue.
Stock 4.3 works fine for me
I've tried MG4 and MK6 modem and restoring efs via Philz Recovery 6.07.9 but no luck. I get a network signal that keeps dropping most of the time. This is strange because I haven't come across this problem before. Everytime I have to flash stock via Odin.
I need to find out why this happens so I can help others if they have the same issue.
EFS is ok and not damaged at all. The problem is that the system can't read the EFS, but I can't figure out what I need to do to get it to work.
~ RazorMC
Click to expand...
Click to collapse
are custom 4.3's working fine mate tried any????
[SOLVED]
Problem: Upgraded to official 4.3 and since then I have not been able to get network signals on 4.4-based roms. Stock 4.3 works fine.
Solution: Installed stock 4.1.2 (even though people said it doesn't work). Lost my signal and IMEI became 0049. Then I installed the patched MG4 modem and got imei and signal back. Then upgraded to Resurrection Remix rom (without GApps first) and still had signal.
Credits:
shazzy1 said:
Tried flashing MG4 modem????? :cyclops::cyclops::cyclops:
Click to expand...
Click to collapse
and
galliard said:
Try to use MK6 complete suite, then apply MK6 patched modem and kernel not only patched modem. I don't know why people say flash MG4 modem, it will never work alone. You must need patched kernel to make it work or use ariza patch in older releases.
Click to expand...
Click to collapse
and
SamMobile
:good: Thanks to all who posted here and helped me with ideas.
~ RazorMC
Glad u found a fix
Sent from my GT-I9300 using XDA Free mobile app
Hi,
I'm in the exact same situation, stock 4.3 work's fine but every time i flash some 4.4 rom, i lost imei / baseband (generic imei and unknown baseband) and the phone is just useless.
After i flashed a 4.4 rom and lost signal, i tried to flash every modem / patched modem that i could find on xda but no luck.
Any ideas of a method that would allow me to flash any 4.4 or 5.0 rom without losing imei / baseband ??
Thx
As you found this long dead thread why not try the solution they found?
boomboomer said:
As you found this long dead thread why not try the solution they found?
Click to expand...
Click to collapse
Because I cannot get my imei / baseband back after flashing the modem on top of 4.1.2.
So I was wondering if there's anything else to try in my situation (stock tw 4.3)
Anyway, Thx for your help...

i am 4.0.4 and no availble updates

I tried to flash through odin many roms 4.3 and 4.1.2
Modem didnt work and emergency calls only
I am now on 4.0.4 how to update
No updates available on kies and update software
I screenshoted some pics pls help
Go read 'efs know this stuff' in general forum, sticky thread.
Try using patched kernel and modem, in 4.3, if your efs isn't compatible.
I flashed thr modem + kernel . The phone came slow and made modified and toggled counter to +2
I need to update by samsung
You can't, your efs isn't compatible with unpatched Samsung firmware.
Sent from my GT-I9300 using Tapatalk

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