Modem issue - Galaxy S III Q&A, Help & Troubleshooting

Hi,
I have the International version of the Samsung Galaxy S III I9300. The baseband that I am using is I9300UBLF2. I was wondering if there is a new modem version I could try to help improve my reception and data issues. I know that I have to root my phone to install a new modem. But can I keep my stock rom or do I need to install a custom rom? How would I install a new modem version for my phone? Thanks

easiest way is to install a custom Tom like omega, then choose the modem from the built in app inside omega..
are you on at&t? even if you switch to the best modem available, your reception, and internet will still suck. I hate my sgs3, I wish I got the American version, good luck to you
Sent from my GT-I9300 using xda app-developers app

You dont need to do anything but install a different modem from the modem thread .See the sticky top of this page .
A custom rom is not needed and will void warranty .
jje

​
JJEgan said:
You dont need to do anything but install a different modem from the modem thread .See the sticky top of this page .
A custom rom is not needed and will void warranty .
jje
Click to expand...
Click to collapse
Hi,
Thanks for your help. But where is the modem thread I can not find it. Could you please send me a link to the modem thread. Also what modem version can I use and what is the current one. Thanks for your help.

aekie95 said:
​
Hi,
Thanks for your help. But where is the modem thread I can not find it. Could you please send me a link to the modem thread. Also what modem version can I use and what is the current one. Thanks for your help.
Click to expand...
Click to collapse
[REF] Galaxy S3 Modem / Radio Collection (I9300 & I9300T ONLY) CWM & Odin Flashable

Related

Can I change modem im my Samsung Galaxy S II I9100?

Hi!
My current phone is:
Samsung Galaxy S II I9100 which is rooted.
ROM: RootBOX 1.5
kernel: Fluxi 3.0.36
current modem: XXLPR
My question would be, can I change the modem just like a random fleshable .zip ? Do I need to perform FULL WIPE? I tried to look up in the forum but only found solutions for non-rooted phones.
Please help
Regards,
Yes. Most modems are CWM flashable. Do a Google search & append XDA to your search terms ("SGS2 CWM modems", etc...use your imagination). Here's a link to a thread that has a bunch of modems to get you started.
Edit - No wipe, clear cache or clear Dalvik required when you flash a modem. Simply boot into CWRecovery, flash the modem, reboot. Done.
Dioktis said:
Hi!
My current phone is:
Samsung Galaxy S II I9100 which is rooted.
ROM: RootBOX 1.5
kernel: Fluxi 3.0.36
current modem: XXLPR
My question would be, can I change the modem just like a random fleshable .zip ? Do I need to perform FULL WIPE? I tried to look up in the forum but only found solutions for non-rooted phones.
Please help
Regards,
Click to expand...
Click to collapse
yes u can flash the zip files of modem thro recovery without any issue, and no need to do full wipe, and also the modem will not wipe anything on ur phone.
after flashing a modem please see it settles down by allowing it for a cpl of days
find some flashable zip collection in link below
Modem Collection
MistahBungle said:
Yes. Most modems are CWM flashable. Do a Google search & append XDA to your search terms ("SGS2 CWM modems", etc...use your imagination). Here's a link to a thread that has a bunch of modems to get you started.
Edit - No wipe, clear cache or clear Dalvik required when you flash a modem. Simply boot into CWRecovery, flash the modem, reboot. Done.
Click to expand...
Click to collapse
Sun90 said:
yes u can flash the zip files of modem thro recovery without any issue, and no need to do full wipe, and also the modem will not wipe anything on ur phone.
after flashing a modem please see it settles down by allowing it for a cpl of days
find some flashable zip collection in link below
Modem Collection
Click to expand...
Click to collapse
Thank you both for your quick replies!
Hmm now could you suggest me which one to choose? It seems there are so many of them... My main aim for this modem change is to save as much battery as possible.
Regards,
Dioktis said:
Thank you both for your quick replies!
Hmm now could you suggest me which one to choose? It seems there are so many of them... My main aim for this modem change is to save as much battery as possible.
Regards,
Click to expand...
Click to collapse
They all work differently depending on your location. One that works well for someone else may not work well for you. Try each one for a while to find one that works well for you.
Eventually I have downloaded the latest XXLPR modem.
Runs pretty good.
Thanks guys!
Uslpg is the best as per me
Sent from my GT-I9100 using Tapatalk 2
Sorry for reviving this old post but can I flash any SGS 2 modem on my phone?
slashragnarok said:
Sorry for reviving this old post but can I flash any SGS 2 modem on my phone?
Click to expand...
Click to collapse
NO, AFAIK if the modem is meant for s2 I9100G u cant flash it on ur s2 I9100 or its variants M/P/T etc
Sun90 said:
NO, AFAIK if the modem is meant for s2 I9100G u cant flash it on ur s2 I9100 or its variants M/P/T etc
Click to expand...
Click to collapse
Okay but all I9100 modems are "inter-flashable" right? Which brings me to the question, why flash another modem at all? I mean logically the stock modem is meant for my region and should be, at least theoretically, the best for my phone.
Theres nothing wrong with reviving old threads as its better than opening up new ones.
Youve just got to try out different modems and kernels and see how your phone performs with the permutations youve chosen.

[Q] HE modem and ROM choice ???

I've updated to HE modem, rooted, unlocked, IMEI backed up, latest recovery. Could someone give a link or answer my noob questions?
#1 Do roms overwrite modem?
#2 Does a ROM need to be written for the HE modem? Meaning, if I have the HE, do I need to wait for a specific update in a rom's development?
Thanks.
Rom in zip format for recovery don't change the modem. Odin ones usually change it.
Rom doesn't care about modem directly, the communication is done by Ril. You can match or try different ril with GetRil app.
iclickjohn said:
I've updated to HE modem, rooted, unlocked, IMEI backed up, latest recovery. Could someone give a link or answer my noob questions?
#1 Do roms overwrite modem?
YES if modem is included in the rom you need to read the rom description if custom rom .Stock Rom always includes a modem and CSC .
#2 Does a ROM need to be written for the HE modem?
NO Modems roms and CSC are interchangeable but a modem or CSC may be specific to a local area .
Its all in the sticky and guides .
jje
Click to expand...
Click to collapse
Striatum_bdr said:
Rom in zip format for recovery don't change the modem.
Click to expand...
Click to collapse
Hi,
In some ROM's the modem is already included in the zip and it can be another different modem than the one you have, so flashing the ROM can change the modem (in case it's in the zip, just need to check the features/changelog of the ROM you want to know it).
You just need to delete the modem in the zip before flashing or reflash the previous modem you had after the ROM.
EDIT: JJEgan is faster...
Sent from my HTC Sensation Z710e using xda app-developers app

Network Carrier problem

hey, guys
I work at KSA
When I was using ICS 4.0.4 Pakistan , when any one call me he hear "the phone you calling is switched off, try again later" and my phone in open at all time.
3 days ago, I downgrade to ICS 4.0.3 KSA till now no problem in receiving calls.
Is this problem from rom, as Modem in each rom different from country to other?
Now I want to flash Cynogonmode rom 10.1, Will I face this problem again?
thank you Guys
Up Please,
mohammedkhairy said:
hey, guys
I work at KSA
When I was using ICS 4.0.4 Pakistan , when any one call me he hear "the phone you calling is switched off, try again later" and my phone in open at all time.
3 days ago, I downgrade to ICS 4.0.3 KSA till now no problem in receiving calls.
Is this problem from rom, as Modem in each rom different from country to other?
Now I want to flash Cynogonmode rom 10.1, Will I face this problem again?
thank you Guys
Click to expand...
Click to collapse
it all depends on the Modem that comes along with the Firmware and will be diff for diff regions ma8
Just check the modem that u have (with ICS 4.0.3) for now which is wrk'ng fine and note it down.
After flashing CM10.1 if u face any netwrk issue then u can use that modem again(which u can find in the link HERE)
Sun90 said:
it all depends on the Modem that comes along with the Firmware and will be diff for diff regions ma8
Just check the modem that u have (with ICS 4.0.3) for now which is wrk'ng fine and note it down.
After flashing CM10.1 if u face any netwrk issue then u can use that modem again(which u can find in the link HERE)
Click to expand...
Click to collapse
thank you man.
I posted this thread in S2G forum but it moved to here, so I'm sorry my phone is GT-I9100G
but the link you provided don't contain any GT-I9100G !
and from where can i find my modem type?
http://forum.xda-developers.com/showthread.php?t=1754158 [Bootloader] [Official Stock Firmwares , Kernels & Modems For i9100g]
mohammedkhairy said:
thank you man.
I posted this thread in S2G forum but it moved to here, so I'm sorry my phone is GT-I9100G
but the link you provided don't contain any GT-I9100G !
and from where can i find my modem type?
Click to expand...
Click to collapse
Oh i see, my mistake for linking I9100 modems ma8, sorry for the same
do please check in the section meant for I9100G, link below for it
Galaxy S II I9100G Android Development
Sun90 said:
Oh i see, my mistake for linking I9100 modems ma8, sorry for the same
do please check in the section meant for I9100G, link below for it
Galaxy S II I9100G Android Development
Click to expand...
Click to collapse
Where can I find Modem version of my phone??
where can i download it?
mohammedkhairy said:
Where can I find Modem version of my phone??
where can i download it?
Click to expand...
Click to collapse
Here u go 'Modem Collection by Neerajganga for I9100G'
for the present Modem on ur phone goto Settings>About phone and see there the Baseband
Thank you, Guys
another important question not related to the address.
when I searched for how to install CWM iny my phone S2G there are many ways and lot of bricked phones in issue
http://forum.xda-developers.com/showthread.php?t=1814801
there are ways to flash via odin other via recovery
I wan't you to illustrate to me the perfect way to do that without risks and not increase binary count and the files I'll use in detail ....<<<phone isn't rooted>>
Can i install CWM and custom rom without rooting
If not what is the first root then CWM or CWM then root.
I searched alote.
thank you guys!

I need help with 2 Australian Galaxy S3

Hi. I have 2 australian galaxy s3. First one is on 4.1.2 TDUELL2 and the second one is on 4.0.4 TDUBLH1. I want to root both of them. The first one after getting updated to 4.1.2 wifi stopped working but i found a fix installing the wifi folder from 4.1.1 version. To that I need root though. So any help on how am I gonna root them both? Cause I couldn't sort it out my self.
jimskeet2002 said:
Hi. I have 2 australian galaxy s3. First one is on 4.1.2 TDUELL2 and the second one is on 4.0.4 TDUBLH1. I want to root both of them. The first one after getting updated to 4.1.2 wifi stopped working but i found a fix installing the wifi folder from 4.1.1 version. To that I need root though. So any help on how am I gonna root them both? Cause I couldn't sort it out my self.
Click to expand...
Click to collapse
What model number are the phones I9300 / I9305?
they are i9300t
I managed to root both of them. I know have a major problem. 1 of them had a problem with wifi. It couldnt connect. I read about a solution by copying the wifi folder from version 4.1.1. Tried that. It worked for once but after reboot it stopped. And now I can't even turn on the wifi. It gets stuck on Turning on... Do i have to reflash the rom again and if so how will i do that? It was stock rom on stock kernel. Only rooted. gt i9300t moder and build DUELL2.
Also can i flash a rom with different build over that? For example XXEMC2 that i have on my Greek galaxy s3?
I9300T rooting is the same as I9300 rooting, follow the guides of CF-Root 6.4 or CF-Autoroot. (I got a T model myself)
You can flash any I9300 rom also on the T model, therefore root is not 100% necessary. Full wipes are recommended for flashing different versions though.
chrismast said:
I9300T rooting is the same as I9300 rooting, follow the guides of CF-Root 6.4 or CF-Autoroot. (I got a T model myself)
Click to expand...
Click to collapse
I did root them. Now my problem is that on one of them wifi isn't working. Check my previous post again
jimskeet2002 said:
I did root them. Now my problem is that on one of them wifi isn't working. Check my previous post again
Click to expand...
Click to collapse
just saw it .
For wifi, try a stock ROM (flash it new incl. wipes etc.), or try a different kernel, whereas the stock kernel should always work.
chrismast said:
just saw it .
For wifi, try a stock ROM (flash it new incl. wipes etc.), or try a different kernel, whereas the stock kernel should always work.
Click to expand...
Click to collapse
Can you tell me how i will flash a new stock rom on it? where can i find the stock rom and can i flash a different build?
DUELL2 is the current.
jimskeet2002 said:
Can you tell me how i will flash a new stock rom on it? where can i find the stock rom and can i flash a different build?
DUELL2 is the current.
Click to expand...
Click to collapse
you can find (unrooted) stock roms for instance on sammobile.com or (rooted) stock roms here on XDA in the General section.
Easiest way to flash them is via Mobile Odin (gives you the option to keep root) or Odin (you will loose root but you can flash CF afterwards manually).
And yes you can flash any build that is made for the I9300/I9300T.
The only difference between both models is the frequency of the baseband (the T model is more optimized for 850mhz) whereas you even can use modems of the I9300 on the I9300T.
chrismast said:
you can find (unrooted) stock roms for instance on sammobile.com or (rooted) stock roms here on XDA in the General section.
Easiest way to flash them is via Mobile Odin (gives you the option to keep root) or Odin (you will loose root but you can flash CF afterwards manually).
And yes you can flash any build that is made for the I9300/I9300T.
The only difference between both models is the frequency of the baseband (the T model is more optimized for 850mhz) whereas you even can use modems of the I9300 on the I9300T.
Click to expand...
Click to collapse
What do you mean by modems? Soz if I sound noob but I am new to Galasy s3. My previous android was ideos x5 and i had a miui rom on it.
The phone will be used in greece. Do you suggest me flashing the XXEMC2 rom that i have on my Greek S3 atm? Is there any chance of bricking it if i flash that rom on it?
jimskeet2002 said:
What do you mean by modems? Soz if I sound noob but I am new to Galasy s3. My previous android was ideos x5 and i had a miui rom on it.
The phone will be used in greece. Do you suggest me flashing the XXEMC2 rom that i have on my Greek S3 atm? Is there any chance of bricking it if i flash that rom on it?
Click to expand...
Click to collapse
There is a difference between the ROM's firmware (basically your OS, e.g. XXEMC2) and the modem (basically the part which gives you the connection to the next mobile tower and is managing the frequencies, e.g. DUELL2).
It does not matter that much what ROM firmware you use as they are nearly identical in each country (here and there dif. apps due to providers) but more that you use a modem that delivers in the country you are in. Hence, I would first try the modems of your region (you can find a list of all modems in the General section's modem collection).
Regarding the risk of bricking: there is always a risk, no one can guarantee you anything , whereas if you follow the guides you should be fine.
chrismast said:
There is a difference between the ROM's firmware (basically your OS, e.g. XXEMC2) and the modem (basically the part which gives you the connection to the next mobile tower and is managing the frequencies, e.g. DUELL2).
It does not matter that much what ROM firmware you use as they are nearly identical in each country (here and there dif. apps due to providers) but more that you use a modem that delivers in the country you are in. Hence, I would first try the modems of your region (you can find a list of all modems in the General section's modem collection).
Regarding the risk of bricking: there is always a risk, no one can guarantee you anything , whereas if you follow the guides you should be fine.
Click to expand...
Click to collapse
Ok. Here is the deal. My greek galaxy s3 which i recently updated is XXEMC2. The galaxy s3 with the wifi problem is DUELL2 bought in australia from a friend but will be sent to greece for my brother. So i should flash XXEMC2 on it? I just download XXEMC2 from sammobile and flash it with odin? It doesn't matter that the XXEMC2 is for i9300 as fas as I understood from what u said. right?
jimskeet2002 said:
Ok. Here is the deal. My greek galaxy s3 which i recently updated is XXEMC2. The galaxy s3 with the wifi problem is DUELL2 bought in australia from a friend but will be sent to greece for my brother. So i should flash XXEMC2 on it? I just download XXEMC2 from sammobile and flash it with odin? It doesn't matter that the XXEMC2 is for i9300 as fas as I understood from what u said. right?
Click to expand...
Click to collapse
correct, you can use the I9300 versions of any rom for the I9300T as well.
chrismast said:
correct, you can use the I9300 versions of any rom for the I9300T as well.
Click to expand...
Click to collapse
Ok. So the CSC numbers that are different on lets say the DUELL2 and the XXEMC2 are not something to bother me right? I just download the XXEMC2 rom and flash it on the DUELL2 S3 and then I just will root it. right? Will the phone become i9300 after that procedure? or stay i9300t? So I know which file i should use to root it.
Soz for too many questions but the phone is not mine and I need to be sure for the procedure.
jimskeet2002 said:
Ok. So the CSC numbers that are different on lets say the DUELL2 and the XXEMC2 are not something to bother me right? I just download the XXEMC2 rom and flash it on the DUELL2 S3 and then I just will root it. right? Will the phone become i9300 after that procedure? or stay i9300t? So I know which file i should use to root it.
Soz for too many questions but the phone is not mine and I need to be sure for the procedure.
Click to expand...
Click to collapse
The firmware code (XXEMC2) should not be of concern.
The modem code (DUELL2) should be of concern IF you experience bad performance in the region you are. If so, flash a different modem and try it.
The phone will be an I9300T whereas in the menus it might tell you I9300, anyway there is no difference in the files to use.
For rooting, follow the guide, you can use CF-Root 6.4 (if you want a custom recovery) or CF-Autoroot (if you want to use stock recovery).
chrismast said:
The firmware code (XXEMC2) should not be of concern.
The modem code (DUELL2) should be of concern IF you experience bad performance in the region you are. If so, flash a different modem and try it.
The phone will be an I9300T whereas in the menus it might tell you I9300, anyway there is no difference in the files to use.
For rooting, follow the guide, you can use CF-Root 6.4 (if you want a custom recovery) or CF-Autoroot (if you want to use stock recovery).
Click to expand...
Click to collapse
Thanks a lot mate. This helped a lot. I decided to go with the 4.1.1 version of its current region. Later if we see that it doesnt perform well here in greece we will flash the xxemc2 rom.
Ok i downloaded the rom from sammobile and the file name is this I9300TDUDLK1_I9300ZZZLK1_VAU.zip but i get an error message that says cannot open. file unknown or damaged :/ Why is that? Is this file meant to be named as md5?
jimskeet2002 said:
Ok i downloaded the rom from sammobile and the file name is this I9300TDUDLK1_I9300ZZZLK1_VAU.zip but i get an error message that says cannot open. file unknown or damaged :/ Why is that? Is this file meant to be named as md5?
Click to expand...
Click to collapse
To flash a rom via odin you need the md5 file, correct. Hence unzip or if you cannot maybe the download is corrupt?
Sent from my GT-I9300 using xda app-developers app
chrismast said:
To flash a rom via odin you need the md5 file, correct. Hence unzip or if you cannot maybe the download is corrupt?
Sent from my GT-I9300 using xda app-developers app
Click to expand...
Click to collapse
The zip file was probably corrupted. we will download the greek version XXELLA after al...l. Cross fingers for success
btw should i make an efs backup to be surr???
and how can i do that?
Will this http://www.androidauthority.com/galaxy-s3-backup-restore-efs-imei-tool-122078/ work?
I did it on my greek galaxy s3 and ended up witha 20mb efs.img
Sent from my GT-I9300 using xda app-developers app
jimskeet2002 said:
btw should i make an efs backup to be surr???
and how can i do that?
Will this http://www.androidauthority.com/galaxy-s3-backup-restore-efs-imei-tool-122078/ work?
I did it on my greek galaxy s3 and ended up witha 20mb efs.img
Sent from my GT-I9300 using xda app-developers app
Click to expand...
Click to collapse
Yes, definitely backup your efs! Search for it and you will find tons of guides.
Sent from my GT-I9300 using xda app-developers app

[Q] Downgrading Galaxy SIII (GT-I9300) from 4.3 to 4.1.2

Dear friends I recently installed I9300XXUGMJ9_I9300VFGGMJ5_VDI_2.tar (Android 4.3) on my Galaxy S III International version. But as we know the firmware is full of messy bugs I just installed the old 4.1.2 firmware from Samsmobile and kies too.. But the problem is that I can't access my network. There seems to be only emergency calls... Can you guys get me this problem fixed? Is there any way to downgrade my phone to old 4.1.2 Jelly Bean. I desperately require some help.
Please use search question asked daily .
Please read faqs and guides .
Please post in the correct forum .
Basics read first.
http://forum.xda-developers.com/showthread.php?t=2344125
Critical you read the first two posts .
Install neatrom 5.4 working great
Sent from my GT-I9300 using xda premium
ozzyblack said:
Install neatrom 5.4 working great
Sent from my GT-I9300 using xda premium
Click to expand...
Click to collapse
Provide the link please. Is it 4.1.2?
yes ..u have to flash modem
featherknox said:
Dear friends I recently installed I9300XXUGMJ9_I9300VFGGMJ5_VDI_2.tar (Android 4.3) on my Galaxy S III International version. But as we know the firmware is full of messy bugs I just installed the old 4.1.2 firmware from Samsmobile and kies too.. But the problem is that I can't access my network. There seems to be only emergency calls... Can you guys get me this problem fixed? Is there any way to downgrade my phone to old 4.1.2 Jelly Bean. I desperately require some help.
Click to expand...
Click to collapse
flash this modem xxemj4.....google it.....or u can try imperium 4.1.2 rom
try Gorgoid 2.7a. MJ2 firmware with MJ1 modem. i flashed over CM11 and all good.
http://forum.xda-developers.com/showthread.php?t=2172299
Thanks
ozzyblack said:
Install neatrom 5.4 working great
Sent from my GT-I9300 using xda premium
Click to expand...
Click to collapse
Thanks dear, I have installed NeatRom Full.
The lag in the lockscreen has gone away so far... Though there the UI is still the same...
It feels as if no change has been made at all....
Looking For 4.1.2
In fact I was looking for a solution to switch back to Custom 4.1.2 as it was the perfect ROM so far for me.
I have downloaded it from Sammobile but after Installing it via Odin I am unable to see any network and the Phone's IMIE is changed. I would greatly appreciate anyone to come up with solution for that....
Thanks everyone for being so kind...
featherknox said:
In fact I was looking for a solution to switch back to Custom 4.1.2 as it was the perfect ROM so far for me.
I have downloaded it from Sammobile but after Installing it via Odin I am unable to see any network and the Phone's IMIE is changed. I would greatly appreciate anyone to come up with solution for that....
Thanks everyone for being so kind...
Click to expand...
Click to collapse
read JJEgan's response.
DO IT!
I had the same problem, and all I did was to get to cm 10.2 before moving back to 4.1.2 stock
Sent from my GT-I9300 using xda app-developers app
Was it helpful?
thunderror said:
I had the same problem, and all I did was to get to cm 10.2 before moving back to 4.1.2 stock
Sent from my GT-I9300 using xda app-developers app
Click to expand...
Click to collapse
I also tried to install the CM via its official Windows Application. When it completed there was no network again... Can you provide me the link of the ROM that you installed? Is it Zipaligned?
@featherknox
Correct me if i'm wrong but maybe u have a problem with efs partition from downgrading unto lower version of android..
here are some post that some of the users have solved their problem..
http://forum.xda-developers.com/showpost.php?p=47524551&postcount=1148
let us know if it works to you..
Thanks
Warrenforfree said:
@featherknox
Correct me if i'm wrong but maybe u have a problem with efs partition from downgrading unto lower version of android..
here are some post that some of the users have solved their problem..
http://forum.xda-developers.com/showpost.php?p=47524551&postcount=1148
let us know if it works to you..
Click to expand...
Click to collapse
Thank you very much.. I am going to give it a try.... Hope it works...
Problem Solved
Dear guys thanks for your time and the help...
With suggestion of a good mate, I am finally able to go back to 4.1.2.....
All I had to do was just Install the Patched Modem MG4
<b> https://www.dropbox.com/s/geispctijpxqjms/Patched_Modem_I9300XXEMG4.zip </b>
Wow,, I am so happy to get rid of that stupid 4.3
featherknox said:
Dear friends I recently installed I9300XXUGMJ9_I9300VFGGMJ5_VDI_2.tar (Android 4.3) on my Galaxy S III International version. But as we know the firmware is full of messy bugs I just installed the old 4.1.2 firmware from Samsmobile and kies too.. But the problem is that I can't access my network. There seems to be only emergency calls... Can you guys get me this problem fixed? Is there any way to downgrade my phone to old 4.1.2 Jelly Bean. I desperately require some help.
Click to expand...
Click to collapse
Check your IMEI number, wheather it was changed to 0049XXXX - I have had the same problem. I downloaded from Sammobile firmware v4.3 and flash your phone with odin. My IMEI and network connection was restored. Looks like Samsung does not like us to downgrade the firmwares.
Problem Solved
Peter1234 said:
Check your IMEI number, wheather it was changed to 0049XXXX - I have had the same problem. I downloaded from Sammobile firmware v4.3 and flash your phone with odin. My IMEI and network connection was restored. Looks like Samsung does not like us to downgrade the firmwares.
Click to expand...
Click to collapse
I have downgraded my Phone. Check the solution into my New Thread!!!!!
http://forum.xda-developers.com/showthread.php?p=47555014#post47555014
Peter1234 said:
Check your IMEI number, wheather it was changed to 0049XXXX - I have had the same problem. I downloaded from Sammobile firmware v4.3 and flash your phone with odin. My IMEI and network connection was restored. Looks like Samsung does not like us to downgrade the firmwares.
Click to expand...
Click to collapse
Its not a problem if users care to read the faqs and guides first .
Solution.....
Hello guys....
I am very thankful to the xda forum and all the members who helped me to get through a serious problem..
Recently I installed 4.3 Leaked version on my GT-I9300 and the ROM proved to be worst ROM of life. So I decided to go back to 4.1.2.
I installed the custom ROM via Odin but I confronted a serious issue, when I was finished the installation I found that there was no network at all... Samsung's official told me that it is impossible to reverse the Android version...
I had no clue what to do. I flashed many ROMs but no solution at all. My IMIE was also kinda jumbled..
Many guys said it is EFS issue... But it is not EFS issue...
It is all because of different Modem issue.. all you need to do is just install a clean custom ROM from http://www.sammobile.com/firmwares/2/ and Install the patched modem... you are done..
So here is the solution:
1. Download your desired CUSTOM ROM for your Country from Sammobile...
Link http://www.sammobile.com/firmwares/2/
2. Install the ROM via Odin
3. Root it and Install your favorite recovery.
4. Install the Patched MG4 Modem Zip in Recovery Mode. Link https://www.dropbox.com/s/geispctijp...9300XXEMG4.zip
You are done....
This problem is all about MODEM version, so I don't think if EFS tricks are involved here.....
Finally credits go to all the XDA Members who put their heart and soul to present all the required guidance for me to be able to downgrade to lower Android Version.. I have only compiled the whole stuff into a single thread....
Thanks,,,
Plenty of solutions....
JJEgan said:
Its not a problem if users care to read the faqs and guides first .
Click to expand...
Click to collapse
Dear sir,
Actually the problem is not finding the solutions but finding the right solution.
Worth members of XDA Forum post a lot of solutions for a particular problem and thus newbies like me get even more confused... So it definitely takes some time for us to come to a point when we are able to get the desired results.
Sometimes, we are not able to clarify our queries.....
As in my problem only a Modem was required while I was looking for EFS solutions!
After Flashing the MG4 modem my battery life has become worst. I don't know if it is because of the Modem.. but whenever my phone is on airplane mode then the battery remains at the same percentage but while on network my battery keeps on draining without even texting or calling
Sent from my GT-I9300 using XDA Premium 4 mobile app

Categories

Resources