Develop Bugs

[Q] Wrong stock rom!!!

I tired to root my galaxy s3 but ended up bricking it for a while and all i got was the Firmware upgrade encountered an issue. Please select recovery mode in Kies & try again. After trying odin so many time i finally got it to work but now i have another issue...i put verizon 4.1 on my phone using odin instead of att. my att sim wont work and i dont know how i am going to get it back to att stock rom so i can use my phone again!!! if anyone know how to reset this please help i just got the phone and now i cant use it because it has Verizon instead of att galaxy s3 stock rom on it.:crying:

pimpjayjay said:
I tired to root my galaxy s3 but ended up bricking it for a while and all i got was the Firmware upgrade encountered an issue. Please select recovery mode in Kies & try again. After trying odin so many time i finally got it to work but now i have another issue...i put verizon 4.1 on my phone using odin instead of att. my att sim wont work and i dont know how i am going to get it back to att stock rom so i can use my phone again!!! if anyone know how to reset this please help i just got the phone and now i cant use it because it has Verizon instead of att galaxy s3 stock rom on it.:crying:
Click to expand...
Click to collapse
Did you ever flash android 4.3 on you're phone? (This is important)

Ali7000 said:
Did you ever flash android 4.3 on you're phone? (This is important)
Click to expand...
Click to collapse
it already had 4.3 i was trying to root it but the process faild and all i get is the error Firmware upgrade encountered an issue. Please select recovery mode in Kies & try again

pimpjayjay said:
it already had 4.3 i was trying to root it but the process faild and all i get is the error Firmware upgrade encountered an issue. Please select recovery mode in Kies & try again
Click to expand...
Click to collapse
Try these http://forum.xda-developers.com/showthread.php?t=2498233, stock at&t rooted without Knox (Believe me man, better without knox). But they are only leaks of the official firmware. I am not a professional developer so you might wanna create a new thread and ask if it's possible in you're situation.

Ali7000 said:
Try these http://forum.xda-developers.com/showthread.php?t=2498233, stock at&t rooted without Knox (Believe me man, better without knox). But they are only leaks of the official firmware. I am not a professional developer so you might wanna create a new thread and ask if it's possible in you're situation.
Click to expand...
Click to collapse
okay i will look it up and see if it works , thanks.

The Canadian and US phones are pretty similar. Maybe a Canadian rom will work?
You can find official firmware here: http://www.sammobile.com/firmwares/1/?model=SGH-I747&pcode=ATT#firmware

audit13 said:
The Canadian and US phones are pretty similar. Maybe a Canadian rom will work?
You can find official firmware here: http://www.sammobile.com/firmwares/1/?model=SGH-I747&pcode=ATT#firmware
Click to expand...
Click to collapse
No it won't work. Since it is a stock rom it most likely will not work, he won't be able to call, text, or use data.

Ali7000 said:
No it won't work. Since it is a stock rom it most likely will not work, he won't be able to call, text, or use data.
Click to expand...
Click to collapse
I wasn't sure if the OP could install some sort of stock firmware to get his phone going and then install the necessary radio.

audit13 said:
I wasn't sure if the OP could install some sort of stock firmware to get his phone going and then install the necessary radio.
Click to expand...
Click to collapse
The best choice for him is to stick to a custom rom until the AT&T 4.3 update releases.

Ali7000 said:
The best choice for him is to stick to a custom rom until the AT&T 4.3 update releases.
Click to expand...
Click to collapse
Wow. it seems as if you got people in here just giving you ODIN TARS to flash. i wouldnt listen/ flash anything than the leaked 4.3 update for att because MOST odin files have bootloader upgrades in them and if you are on 4.3 you will brick trying to restore stock

Andy_nu said:
Wow. it seems as if you got people in here just giving you ODIN TARS to flash. i wouldnt listen/ flash anything than the leaked 4.3 update for att because MOST odin files have bootloader upgrades in them and if you are on 4.3 you will brick trying to restore stock
Click to expand...
Click to collapse
Hah Yah man I've been through a lot sh**.
Sent from my SGH-I747M using XDA Premium 4 mobile app

At&t Tar files
what should i do, the tar file for Verizon still fails but it will go as far as to let my device boot but so i can at least get to recovery mode and then i can reboot it and clear system data but of courses that not what i want because it running Verizon.I is there a way to find the tar file that has at&t on it so i can try to make it work?

Ali7000 said:
Hah Yah man I've been through a lot sh**.
Sent from my SGH-I747M using XDA Premium 4 mobile app
Click to expand...
Click to collapse
what should i do, the tar file for Verizon still fails but it will go as far as to let my device boot but so i can at least get to recovery mode and then i can reboot it and clear system data but of courses that not what i want because it running Verizon.I is there a way to find the tar file that has at&t on it so i can try to make it work?

Based on the OP, the phone is currently running Verizon's 4.1 which leads me to believe the bootloader has not been updated beyond 4.1.2 since recovery mode is accessible; therefore, I think flashing 4.11 or 4.1.2 stock roms would be fine.
As always, it's best to check the installed bootloader before proceeding with any more flashes.
I used the stock firmware from here to downgrade my Bell s3 from stock 4.1.2 to stock 4.1.1.
Stock firmware: http://www.sammobile.com/firmwares/1/?model=SGH-I747&pcode=ATT#firmware

pimpjayjay said:
what should i do, the tar file for Verizon still fails but it will go as far as to let my device boot but so i can at least get to recovery mode and then i can reboot it and clear system data but of courses that not what i want because it running Verizon.I is there a way to find the tar file that has at&t on it so i can try to make it work?
Click to expand...
Click to collapse
Download the ATT Image
Current I747UCDLK3 (JB 4.1.1)
http://forum.xda-developers.com/showthread.php?t=1739426

audit13 said:
Based on the OP, the phone is currently running Verizon's 4.1 which leads me to believe the bootloader has not been updated beyond 4.1.2 since recovery mode is accessible; therefore, I think flashing 4.11 or 4.1.2 stock roms would be fine.
As always, it's best to check the installed bootloader before proceeding with any more flashes.
I used the stock firmware from here to downgrade my Bell s3 from stock 4.1.2 to stock 4.1.1.
Stock firmware: http://www.sammobile.com/firmwares/1/?model=SGH-I747&pcode=ATT#firmware
Click to expand...
Click to collapse
i wouldnt flash the bootloader just to to be safe though. id flash the recovery from the root forum and then install a cm or aosp ROM.
or open the tar and make sure there are not bootloader related files i forgot all of them but one is mbl. something and 1,2,3 theres a post on here how to check i just dont know where

[Q] Downgrade from Custom 4.4.2 to stock 4.3 possible?

Hi everyone I hope this is not a repetition of some old thread (I tried but couldn't find though).
I was using my note 2 (T889) on stock 4.3 which i previously flashed via odine. A couple of days ago i came by this good looking kitkat based rom ( eZKAT v2.0 ) and went on to try it. the rom flashed flawlessly and after flashing my modem i got the signals as well but the wifi was not working. tried using dr. ketans wifi patch but didnt get the wifi to working. Anyhow, I decided to go back to 4.3 via odine. The odine flashing completed successfully but i got stuck on T-mobiles boot screen for hours.
Is there anything called "you cant go back to 4.3 from 4.4.2"? If yes, then whats the way around? I really need to go back to the stock.
Thanks.

zetrixNoob said:
Hi everyone I hope this is not a repetition of some old thread (I tried but couldn't find though).
I was using my note 2 (T889) on stock 4.3 which i previously flashed via odine. A couple of days ago i came by this good looking kitkat based rom ( eZKAT v2.0 ) and went on to try it. the rom flashed flawlessly and after flashing my modem i got the signals as well but the wifi was not working. tried using dr. ketans wifi patch but didnt get the wifi to working. Anyhow, I decided to go back to 4.3 via odine. The odine flashing completed successfully but i got stuck on T-mobiles boot screen for hours.
Is there anything called "you cant go back to 4.3 from 4.4.2"? If yes, then whats the way around? I really need to go back to the stock.
Thanks.
Click to expand...
Click to collapse
I had this problem on my Note also. Downgrading versions of Android requires a data wipe. You will need to reflash your 4.4 ROM then backup your data if you want. Save your backup to your computer then install the 4.3 image.
Sent from my Nexus 7

EverDawn4 said:
I had this problem on my Note also. Downgrading versions of Android requires a data wipe. You will need to reflash your 4.4 ROM then backup your data if you want. Save your backup to your computer then install the 4.3 image.
Sent from my Nexus 7
Click to expand...
Click to collapse
I already tried that but still the booting stuck on the t-mobile logo. I read somewhere that locked bootloader don't let you downgrade to previous version. Is this true?

In that case. Try finding a 4.3 rom that's close to stock.
Sent from my Nexus 7

The locked bootloader is always in stock firmwares i.e 4.3 for the Note 2 but not in custom roms meaning u can even install Lollipop custom on it & downgrade smoothly, i have done that many times. The problem is 4.3 stock firmware has locked bootloader hence downgrading still keeps u in 4.3 bootloader even if u remove all the KNOX files.

Stuck trying to downgrade from custom 5.1.1 to stock 4.3
Hi, i have a problem like this, upgrade to a custom 5.1.1 and then sell the phone, the new owner wants to have it stock, i try to downgrade to 4.3 but i cant, in odin i set the phone to flash it but seems like it doesn`t recognize the phone and i dont know why, so, i decided to try in recovery mode installing from the sd card but the sistem abort, so, i don`t know what to do, i`ll appreciates any help, sorry for my english, i do my best. (i have root access before upgrated to 5.1.1).

Downgrading from Android 5.1.1 to Android 4.1

I have Pac Rom Android 5.1.1 installed on my rooted sg3 and I need to do a carrier unlock. I contacted ATT to get the unlock code and the code they provided didn't work. Now I want to downgrade to Android 4.1 and try the UMTS menu trick as described here http://forum.xda-developers.com/showthread.php?t=2176719
I have tried Odin many times (with many versions, different computers, USB cables, etc) and every time Odin fails to flash Android 4.1. with a Fail AUTH error. I have used Odin successfully in the past many times with this phone but am unable to get it to work this time around.
Does anyone know how to downgrade the sg3 from 5.1.1 to 4.1? Or even better does anyone how to carrier unlock the sg3 when it has 5.1.1 installed on it?
Thanks!

Odin is probably failing because you have a 4.3 or 4.4.2 bootloader on your phone. I recommend you not flash anymore ROMs using Odin as repeat attempts to flash the 4.1.1 ROM via Odin may hard brick the phone.
Once a phone is running and 4.3 or 4.4.2 bootloader, you cannot use the free/hidden menu method to unlock the phone.
You cannot use a custom ROM to enter an unlock code. You'll have to go back to a stock ROM, enter the code, and return to a custom ROM.

Thanks for the reply. Do you know how I can go back to stock 4.1.1 without using Odin?

You need the 4.1.1 bootloader in order to use the free method. Once a phone is on 4.3 bootloader or higher, you can't go back to 4.1.1. Don't try because attempts to do so could brick the phone.
A stock 4.1.1 rom on a 4.3 bootloader will not work.

So you're saying once the sg3 is on a version above 4.3 there is no way to go back to 4.1.1?

slipnslider said:
So you're saying once the sg3 is on a version above 4.3 there is no way to go back to 4.1.1?
Click to expand...
Click to collapse
Once it is on the 4.3 or higher bootloader, there is no going back to an older bootloader and it is the older 4.1.1 bootloader and stock 4.1.1 ROM that is required to unlock using the free method.
Since you have the code, you can flash a stock ROM from recovery.

audit13 said:
Once it is on the 4.3 or higher bootloader, there is no going back to an older bootloader and it is the older 4.1.1 bootloader and stock 4.1.1 ROM that is required to unlock using the free method.
Since you have the code, you can flash a stock ROM from recovery.
Click to expand...
Click to collapse
Thanks. What do you mean by free method?
Also you suggesting if I put the 4.1.1 stock rom .zip on my sg3 I can flash it via CWM just like I would the latest 5.1.1 Pac Rom release?

The free method is the method you linked in your original post. This is the only free method available and it requires a 4.1.1 bootloader that your phone doesn't have. Installing 4.1.1 via cwm is not going to help you unlock it.

Since you have the code, you can flash a stock ROM from recovery.
Click to expand...
Click to collapse
How would I do this? Do I just flash 4.1.1 from cwm?

Flashing 4.1.1 onto your phone will not allow you to enter the code.
Before flashing anything, you need to verify the bootloader that is running on your phone. Until you do that, I would not flash any bootloaders or modems. An incompatible modem/bootloader combination can also brick your phone.

Sorry, one last question.
You'll have to go back to a stock ROM, enter the code, and return to a custom ROM.
Click to expand...
Click to collapse
How can I go back to the stock rom?

You can flash a stock rom from the general thread using twrp or cwm.

Awesome, thanks again. I was worried about going that route since I'm on 5.1.1 but I'll give it a shot

slipnslider said:
Awesome, thanks again. I was worried about going that route since I'm on 5.1.1 but I'll give it a shot
Click to expand...
Click to collapse
When you pick a stock ROM, make sure you pick one with the same bootloader and modem that are currently on your device. You probably have either the NE4 or NJ1 bootloader and modem pair. You DO NOT have a 5.1.1 bootloader and modem, they do not exist for the SGS3. Check your versions from a Terminal Emulator app or check them with the Phone Info - Samsung - app from the PlayStore.
Both NE4 and NJ1 stock ROMs are available in the forum. enewman17 posted them form image dumps, they have been used successfully by many.
The Terminal Emulator commands are:
Code:
getprop ro.bootloader
getprop | grep version.baseband

Thanks, I did this and both the bootloader and modem ended with NJ1 so I downloaded UCUFNJ1_Rooted.zip from enewman17's thread using CWM 6.0.4. The flash was successful but now the phone is frozen at the AT&T logo when I turn it on.
Any thoughts as to why its stuck booting up?

slipnslider said:
Thanks, I did this and both the bootloader and modem ended with NJ1 so I downloaded UCUFNJ1_Rooted.zip from enewman17's thread using CWM 6.0.4. The flash was successful but now the phone is frozen at the AT&T logo when I turn it on.
Any thoughts as to why its stuck booting up?
Click to expand...
Click to collapse
More than once I have seen reports of this happening when going from a 5.x.x ROM back to 4.4.x. The most common solution has been to include formating the internal sdcard before flashing the stock ROM.

If I flash the sd card as well I will lose the UCUFNJ1_Rooted.zip file. So in that case should I use adb via CWM to flash it?

slipnslider said:
If I flash the sd card as well I will lose the UCUFNJ1_Rooted.zip file. So in that case should I use adb via CWM to flash it?
Click to expand...
Click to collapse
Put the zip file on the external sdcard and then flash it with your recovery.

I actually didn't have an external SD card. I wound up taking it to the ATT store that had an ATT repair shop inside it and they reset it back to stock 4.4 for me and now everything works great! After unlocking the carrier on the phone I did have to manually enter the t-mobile APN to get the data connection working but that was simple (the info is listed on t-mobile's site)

slipnslider said:
I actually didn't have an external SD card. I wound up taking it to the ATT store that had an ATT repair shop inside it and they reset it back to stock 4.4 for me and now everything works great! After unlocking the carrier on the phone I did have to manually enter the t-mobile APN to get the data connection working but that was simple (the info is listed on t-mobile's site)
Click to expand...
Click to collapse
Glad to see you are up and running. Also glad to hear the AT&T guys helped out.

I747 doesnt reconigze the sim card after install custom rom

good afternoon, I have a Galaxy S3 SGH-I747 Model using ClockworkMod install the [ROM] [4.4.4] SlimKat d2att (at & t) Stable 9.0 and [Gapps] [4.4.x] Official Slim GApps TRDS (Slimkat) and now not recognize me the sim card. i bought this phone in amazon for use it here in Madrid. i dont know if is a Modem issue. I appreciate all the help you can give me. Thank you. (sorry for my english)

Does your sim card have a pin code that you enter each time you boot the phone? If yes, does the phone ask for the pin before unlocking the sim? What bootloader and modem are currently on the phone? Did the phone work before installing a custom ROM?

@audit13 , mine said "no service available" after moving from KK to lolli and i flashed a "write to extsdcard fix zip" and it fixed the issue , i.e. can now make and recieve calls. dont know if is same issue (or why exactly that fixed mine) but i have a KK "write to extsdcard fix.zip" if you think it would help.
"err on the side of kindness"

audit13 said:
Does your sim card have a pin code that you enter each time you boot the phone? If yes, does the phone ask for the pin before unlocking the sim? What bootloader and modem are currently on the phone? Did the phone work before installing a custom ROM?
Click to expand...
Click to collapse
Thank you, audit13, my Sim card have a pin code, but doesn't ask for the pin, and yes, the phone work well before installing the custom rom. Where can I look the bootloader and modem?.

you can download the "samsung info app" from here http://forum.xda-developers.com/showthread.php?t=2609045
and it will tell you bootloader and modem.
(p.s. as always audit13 , not trying to butt-in ; just trying to help out/save you a step )
"err on the side of kindness"

Hey I have sgh-i747m canadian on stock jb . I flashed to CM 12.1 and my phone doesn't recognize sim. That means I can make calls and receive but no mobile data. Please help me
Sent from my SAMSUNG-SGH-I747 using XDA-Developers mobile app

For the i747, sounds to me like the bootloader and modem are too old for the rom.
For theni747m, is the phone running the latest bootloader and modem?
@mrrocketdog, I've never heard about that zip until your helpful post. I must keep that in mind for the future even though I haven't had an s3 for quite a while.

audit13 said:
Does your sim card have a pin code that you enter each time you boot the phone? If yes, does the phone ask for the pin before unlocking the sim? What bootloader and modem are currently on the phone? Did the phone work before installing a custom ROM?
Click to expand...
Click to collapse
Ok, use the app that mrrocketdog ,so nicely share to us, and the bootloader is I747UCDLK3 and the módem is MSM8960. Something call my atention, the kernel is 3.4.104-cyanogenmod-g38a4g52 [email protected] #1 32-bit. I hope this information can help. Thank you

mrrocketdog said:
@audit13 , mine said "no service available" after moving from KK to lolli and i flashed a "write to extsdcard fix zip" and it fixed the issue , i.e. can now make and recieve calls. dont know if is same issue (or why exactly that fixed mine) but i have a KK "write to extsdcard fix.zip" if you think it would help.
HI, where can I find that zip to see if fix my problem. Thanks in advance.
Click to expand...
Click to collapse

The problem is the bootloader and modem. They need to be updated to work with the latest ROMs.
If the phone is sim unlocked, I recommend flashing back a stock rom using Odin and the firmware from sammobile, set up the phone, run ota updates until the phone is running the latest bootloader and modem. This is tedious and takes the most time but it is the safest method in my opinion.
If you don't want to go this route, just flash the latest modem and bootloader using twrp, flash the custom rom, flash gapps.

@Budare , here is the thread to upgrade bootloaders and modem if you decide on this route rather than flashing back to stock and running ota updates as @audit13 suggested , which IS the safest route. (always always always a certain % of risk ; no matter how small , to flash anything. not trying to scare you , just being honest)
http://forum.xda-developers.com/showthread.php?t=2808654
p.s. you might want to think about changing to twrp recovery as cwm has not been updated in quite a long time.
p.s.s. here's the latest twrp DL page for sghi747 att
https://dl.twrp.me/d2att/
"err on the side of kindness"

audit13 said:
The problem is the bootloader and modem. They need to be updated to work with the latest ROMs.
If the phone is sim unlocked, I recommend flashing back a stock rom using Odin and the firmware from sammobile, set up the phone, run ota updates until the phone is running the latest bootloader and modem. This is tedious and takes the most time but it is the safest method in my opinion.
If you don't want to go this route, just flash the latest modem and bootloader using twrp, flash the custom rom, flash gapps.
Click to expand...
Click to collapse
thank you audit13, but how i run ota updates??

To run ota updates, you need to use Odin to flash the stock att 4.1.1 rom using Odin. After setting up the phone, check for software update under the phone settings.

audit13 said:
To run ota updates, you need to use Odin to flash the stock att 4.1.1 rom using Odin. After setting up the phone, check for software update under the phone settings.
Click to expand...
Click to collapse
i dont know if is because im in Madrid, but the phone doesnt get updates, thats why i want to use another rom. what can i do?

Not sure but I have received OTA updates even when the phone is not in the phone's original country. The OTA updates came over wifi.
If you want to use another ROM, you can install TWRP, boot into TWRP, flash bootloader, flash modem, flash custom ROM, flash gapps. If flashing the modem bootloader in TWRP, DO NOT reboot the phone in between flashing this files and make sure the bootloader and modem version are made for each other.

How do you unlock an i747M locked to Fido? [OctOS L 5.1.1]

So I'm planning to switch carriers and I'm wondering how I can unlock my i747M locked to Fido that's running OctOS L 5.1.1. If I have to downgrade, how do I transfer all my current app data and pic's. Also, is it possible to keep the unlock if you were to update you phone to a higher version or install a custom ROM or install the nandroid backup you made before unlocking? Please leave me with some important things to know about while unlocking your phone if possible!

If the phone is running a 4.3 or newer bootloader, you'll have to buy an unlock code.
In order to enter the unlock code, the phone should be running a stock samsung ROM from sammobile.
I suggest creating a nandroid backup with TWRP, copy the backup to your computer, flash the stock ROM, perform a factory reset after flashing stock, unlock, flash TWRP, restore nandroid.

audit13 said:
If the phone is running a 4.3 or newer bootloader, you'll have to buy an unlock code.
In order to enter the unlock code, the phone should be running a stock samsung ROM from sammobile.
I suggest creating a nandroid backup with TWRP, copy the backup to your computer, flash the stock ROM, perform a factory reset after flashing stock, unlock, flash TWRP, restore nandroid.
Click to expand...
Click to collapse
so, in a nutshell, i just need to downgrade my phone to a stock rom of 4.3 or below and just search up a video of how to unlock it using the keypad method?
than if i wanted to, i could use the nandroid backup i did before and flash it and still have an unlocked phone?

You cannot use the free method once the phone is running a 4.3 or newer bootloader because you cannot properly run the 4.1.1 modem on a 4.3 or 4.4.2 bootloader and the 4.3 or 4.4.2 bootloader cannot be downgraded to a 4.1.1 bootloader.
Before flashing anything, which bootloader is on the phone?

audit13 said:
You cannot use the free method once the phone is running a 4.3 or newer bootloader because you cannot properly run the 4.1.1 modem on a 4.3 or 4.4.2 bootloader and the 4.3 or 4.4.2 bootloader cannot be downgraded to a 4.1.1 bootloader.
Before flashing anything, which bootloader is on the phone?
Click to expand...
Click to collapse
Sorry for the noob question, but how do i found out my bootloader?
If this helps, my baseband is I747MVLUFOB3

I actually just logged on to get similar clarification. I have an unlock code, but it does not work when I enter it using OctOS-M. Do I need to be on a stock rom to unlock? Can I easily jump back to a stock rom, then back again to a marshmallow rom?

JoshMcMadMac said:
I actually just logged on to get similar clarification. I have an unlock code, but it does not work when I enter it using OctOS-M. Do I need to be on a stock rom to unlock? Can I easily jump back to a stock rom, then back again to a marshmallow rom?
Click to expand...
Click to collapse
From what ive heard, you have to be on a stock rom. As of google, even then, some users have problems or cant, which from what ive heard, can be fixed by downgrading to 4.3 (make sure ur bootloader is the same or your phone WILL be bricked).
Please note that this is from what ive heard and may not be accurate.

Install the Samsung phone info app from the play store as it will tell you a lot.

audit13 said:
Install the Samsung phone info app from the play store as it will tell you a lot.
Click to expand...
Click to collapse
My boot loader seems to be the same as my baseband.

What is the bootloader version?

GamingDevilsCC said:
From what ive heard, you have to be on a stock rom. As of google, even then, some users have problems or cant, which from what ive heard, can be fixed by downgrading to 4.3 (make sure ur bootloader is the same or your phone WILL be bricked).
Click to expand...
Click to collapse
That sounds problematic...I am on NJ2. I am not having any luck finding anything about getting back to stock on the newest bootloader.

audit13 said:
If the phone is running a 4.3 or newer bootloader, you'll have to buy an unlock code.
In order to enter the unlock code, the phone should be running a stock samsung ROM from sammobile.
I suggest creating a nandroid backup with TWRP, copy the backup to your computer, flash the stock ROM, perform a factory reset after flashing stock, unlock, flash TWRP, restore nandroid.
Click to expand...
Click to collapse
Do you think this one would work?
https://z3x-team.com/forum/topic.php?id=9505
Whats a CWM anyways?

CWM is Clockworkmod with is a custom recovery. CWM is outdated as it has not been updated for quite some time. Many recent custom ROMs now require TWRP.
You may be able to software unlock the phone but you'll probaby need a UART cable and Samsung Pro tools. I don't believe Pro Tools is free.
The linked thread is from 2014 and, in 2014, many phones were running 4.1.2 which meant the phone could be downgraded to 4.1.1 using and sim unlocked using the dialler's menu options.