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Caution: I have tried this method with my S3 and successfully flash back to old bootloader XXALEF. But we always have to be careful when flash bootloader. According to sammobile, Samsung updated new bootloader to fix suddend death error of S3. Every update of the manufacture should be better. So I don't advise you to downgrade bootloader back to previous version. JUST ALWAY FLASH AS OUR OWN RISK !
And If you try and successfully please report here and let me know if it works 100% on another S3.
Hey guys,
After flashed stock XXELLA rom or flash new XXELLA bootloader. You can't not flash back to old previous version of bootloader anymore via PC Odin. And after every S3 reboot, it will show red exclamation mark at boot logo and always check flash counter =1 in download mode if you user custom kernel or custom CWM. This is 3 method to flash back to old bootloader:
>>> METHOD 1: You can use Sboot Checker to check which bootloader is backlisted. Then use some basic terminal commands to downgrade your bootloader. This is more simple and safer. Please visit @Odia's topic http://forum.xda-developers.com/showthread.php?t=2081748. Credit to him.
>>> METHOD 2: This is the most simple and fast method for lazy guys ! Just download the following .zip file and flash via CWM Recovery. You will be restored to old ICS bootloader XXBLFB. This is download link http://forum.xda-developers.com/showpost.php?p=36433966&postcount=105. Credit to @fbatti73 he has ported @Odia's command to CWM flashable zip file. So many thanks to @fbatti73 and @Odia.
>>> METHOD 3: This is the first method I've found but far too much work involved and take alot of time. But if you like this' also another choosing:
1. Always backup first, full wipe yor S3 and flash back to lastest stock ICS 4.0.4 rom not included old bootloader in it or you can fash via Mobile Odin and don't care it include a bootloader or not because Mobile Odin doesn't flash bootloader. I''m in Vietnam and I choose this ICS 4.0.4 rom I9300XXBLH1_I9300OLBBLH1_XEV.zip http://www.hotfile.com/dl/166926386/6a0e52a/I9300XXBLH1_I9300OLBBLH1_XEV.zip.html
2. After flashed ICS 4.04 rom don't root or do another work on it, Just check OTA update on S3 by Go to Settings > About device > Software update > Click Update. Let OTA update your S3 to JB 4.1.1. In my case the OTA will update to JB 4.1.1 XXDLJ1 and it takes about 2xx MB size. Yes, it's here. The processing of OTA update from ICS 4.0.4 to JB 4.1.1 can break the protect of new bootloader XXELLA . And after OTA updated to JB 4.1.1 you would have the old version of JB 4.1.1 bootloader. In my case it's bootloader XXDLJ1.
3. But although our S3 has old bootloader XXDLJ1 but it's still a JB bootloader version. Every S3 reboot you will still get red exclamation mark and counter =1 if you use custom kernel or custom CWM. To make red exlamation mark and counter =1 disappear totally. You only have to flash back to old ICS version bootloader XXALEF. And now you can flash back to XXALEF bootloader via PC Odin.
4. Just install a custom kernel and a custom CWM Recovery. Wa wa, red exclamation mark and counter =1 have already dissapeared totally.
This is the link of ICS old bootloader XXALEF can flash via Odin: http://www.mediafire.com/?dlruvz9fib6c046
>>> Many thanks to XDA members of the following threads. Yours'' replys helped me accidental found this way )
http://forum.xda-developers.com/showthread.php?t=2077844
http://forum.xda-developers.com/showthread.php?t=1918667
http://forum.xda-developers.com/showthread.php?t=1993044
http://forum.xda-developers.com/showthread.php?t=1646610
Dr.Love said:
Hey guys,
After flashed stock XXELLA rom or flash new XXELLA bootloader. You can't not flash back to old previous version of bootloader anymore. And after every S3 reboot, it will show red exlamation mark at boot logo and always check flash counter =1 in download mode if you user custom kernel or custom CWM. This is the way I found to flashed back to old bootloader.
1. Flash back to lastest stock ICS 4.0.4 rom not included old bootloader in it. I''m in Vietnam and I choose this rom I9300XXBLH1_I9300OLBBLH1_XEV.zip http://www.hotfile.com/dl/166926386/6a0e52a/I9300XXBLH1_I9300OLBBLH1_XEV.zip.html
2. After flashed ICS 4.04 rom. You let OTA update check and let OTA update your S3 to JB 4.1.1. In my case the OTA will update to JB 4.1.1 XXDLJ1. Yes, it's here. The processing of OTA update from ICS 4.0.4 to JB 4.1.1 can break the protect of new bootloader XXELLA . And after OTA updated to JB 4.1.1 you would have the old version of JB 4.1.1 bootloader. In my case it''s bootloader XXDLJ1.
3. But although our S3 has old bootloader XXDLJ1 but it''s still a JB bootloader version. Every S3 reboot you will still get red exlamation mark and counter =1 if you use custom kernel or custom CWM.
4. To make red exlamation mark and counter =1 disappear totally. You only have to flash back to old ICS version bootloader XXALEF. And now you can flash back to XXALEF bootloader via Odin.
5. Just install a custom kernel and a custom CWM Recovery. Wa wa, red exlamation mark and counter =1 have already dissapered totally.
This is the link of ICS old bootloader XXALEF can flash via Odin: http://www.mediafire.com/?dlruvz9fib6c046
>>> Many thanks to XDA members of the following threads. Yours'' replys helped me accidental found this way )
http://forum.xda-developers.com/showthread.php?t=2077844
http://forum.xda-developers.com/showthread.php?t=1918667
http://forum.xda-developers.com/showthread.php?t=1993044
http://forum.xda-developers.com/showthread.php?t=1646610
Click to expand...
Click to collapse
Did you even tried it or you need other members to beta test it 4 u,post a video of u making this ACTUALLY work !
Dr Love. In the OTA step- how much is the size of 4.1.1 ?
Pretty nice, will give it a try on the S3 of my mom
nhariamine said:
Did you even tried it or you need other members to beta test it 4 u,post a video of u making this ACTUALLY work !
Click to expand...
Click to collapse
Oh, I have tried it with my S3 and successfully flash back to old bootloader. Sorry, I can't make a video. I will add caution in post 1 because always have to be carefully when flash bootloader. You can try as your own risk.
thekoRngear said:
Dr Love. In the OTA step- how much is the size of 4.1.1 ?
Click to expand...
Click to collapse
About 2xx MB.
sangosnip69 said:
Pretty nice, will give it a try on the S3 of my mom
Click to expand...
Click to collapse
I'm downloading everything I need, I'll get a try and come back later to tell you if it's work with French Firmware.
Why there is red mark when phone boot? I'm running CM10.1 I got afraid because of that.
Sent from my GT-I9300 using xda app-developers app
how the new bootloader looks like ?
eranda84 said:
Why there is red mark when phone boot? I'm running CM10.1 I got afraid because of that.
Sent from my GT-I9300 using xda app-developers app
Click to expand...
Click to collapse
It appear because you use custom kernel or custom CWM with new bootloader.
F.M.K said:
how the new bootloader looks like ?
Click to expand...
Click to collapse
Go to google play, find app Android System Info. Install and run it you will see current version of your S3's bootloader in System Tab.
SUCCESS!!!!!!!!!!!!!!!!!!!!!!!!
Bootloader changed to XXDLJ1.
Update: Changed to ICS XXALEF.
Thanks a lot!!!
The trick is to download a full fledged ICS firmware of a country that yet no been updated to 4.1.2. After flash, let the OTA update according to that or any country that has not been updated to JB 4.1.2. I downloaded OP's Vietnamese firmware and flashed but chosen India on OTA update. It's a 285.07 MB file.
Voila you are done. The OTA does the trick.
thank you for the information, I'll try
If I flash old nandroid backup from ics, would it flash old bootloader?
Sent from a better Galaxy designed for humans!
zadusimple said:
If I flash old nandroid backup from ics, would it flash old bootloader?
Sent from a better Galaxy designed for humans!
Click to expand...
Click to collapse
no
thekoRngear said:
SUCCESS!!!!!!!!!!!!!!!!!!!!!!!!
Bootloader changed to XXDLJ1.
Update: Changed to ICS XXALEF.
Thanks a lot!!!
The trick is to download a full fledged firmware of a country that yet no been updated to 4.1.2. After flash, let the OTA update according to that or any country that has not been updated to JB 4.1.2. I downloaded OP's vietnamese firmware but in the SW settings chose India.
Voila you are done. The OTA does the trick.
Click to expand...
Click to collapse
thanks have you used mobile odin?thanks for reply
uberto.costanzo said:
thanks have you used mobile odin?thanks for reply
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Click to collapse
It will work with kies?
uberto.costanzo said:
thanks have you used mobile odin?thanks for reply
Click to expand...
Click to collapse
Nope.
Done with PC Odin.
thekoRngear said:
Nope.
Done with PC Odin.
Click to expand...
Click to collapse
and factory reset after flash or before? thanks
uberto.costanzo said:
and factory reset after flash or before? thanks
Click to expand...
Click to collapse
Hmm..just before I flashed the full firmware I had fully wiped device with cwm recovery.
uberto.costanzo said:
and factory reset after flash or before? thanks
Click to expand...
Click to collapse
Before
Since I'm OCD and need everything up to date... What's the latest bootloader for our device? I'm out the Skilrex (spelling?) ICS bootloader currently.
You are correct and Version 8 is the most recent. There is a sticky for it in the developer section if you need.
Sent from my A500 using Tapatalk HD
I'll look for it.
Will I even notice any difference with a bootloader upgrade?
Yep, the ability to install JB... Dual boot I believe and the ability to flash bootloaders using CWM instead of your PC...
Ive noticed there are multiple boot loaders for the A500 verses the A100..I unlocked the bootloader and put on a cutom recovery CWM and havent messed with it since.. is that possible with this device or does each rom need a specific bootloader? Or will this V8 be the only time I mess with the bootloader?
I'm already on CM 10.1 and v8 of the bootloader so no update needed I guess.
droidxxxxx said:
Ive noticed there are multiple boot loaders for the A500 verses the A100..I unlocked the bootloader and put on a cutom recovery CWM and havent messed with it since.. is that possible with this device or does each rom need a specific bootloader? Or will this V8 be the only time I mess with the bootloader?
Click to expand...
Click to collapse
All ICS and JB ROMs will work with V8. Honeycomb however will not. So to answer your question, yes after install V8 you shouldn't ever have to mess with it again.
Sent from my A500 using Tapatalk HD
Ok, I'm rooted.. now I want to put on a recovery next? and then the custom bootloader? Or is V8 the recovery as well?
V8 is the custom bootloader. If you go by the sticky in the developer section for installing V8 you will install a recovery as part of the process. You are given the option of which to install, they are TWRP, Thors or pubA50 recovery.
Sent from my ThunderBolt using xda premium
So I am using CM10.1 with CWM recovery. What will I have to do when a new version of Android comes out? (4.2.3 or 5.0)
And will I lose my root access?
Sent from my Nexus 4 using xda app-developers app
Either flash a new ROM that's built on the new version, or go back to stock.
username8611 said:
Either flash a new ROM that's built on the new version, or go back to stock.
Click to expand...
Click to collapse
And to flash that ROM, do you have to get new bootloader and baseband or what?
And go back to stock: do you mean to flash the factory image, or can you also get OTA updates by restoring a nandroid backup of the stock rom?
once you are rooted, unlocked and with custom recovery changing ROMs is as simple as puting zip onto your devices' internal storage and flashing it through recovery. you COULD be asked to flash a newer radio version, however it is not that common.
no OTA when rooted, going back to stock only with facotry images.
anyway 5.0 will be availabale on custom ROMs shortly after or even before official google OTA so no need to unroot.
dzumagos said:
once you are rooted, unlocked and with custom recovery changing ROMs is as simple as puting zip onto your devices' internal storage and flashing it through recovery. you COULD be asked to flash a newer radio version, however it is not that common.
no OTA when rooted, going back to stock only with facotry images.
anyway 5.0 will be availabale on custom ROMs shortly after or even before official google OTA so no need to unroot.
Click to expand...
Click to collapse
So when 5.0 comes out, I just have to wait a day and flash a new CM version without flashing a new bootloader or radio?
And will it directly be stable?
Thibaultvw said:
So when 5.0 comes out, I just have to wait a day and flash a new CM version without flashing a new bootloader or radio?
And will it directly be stable?
Click to expand...
Click to collapse
Android 5.0 is far away by now, and nobody can tell you yet about stability
i´m sure it will get announced, just check the CM thread and read about (possible) bugs
Thibaultvw said:
So when 5.0 comes out, I just have to wait a day and flash a new CM version without flashing a new bootloader or radio?
And will it directly be stable?
Click to expand...
Click to collapse
As long as you read threads properly you'll know whether or not anything extra needs to be flashed. Even if there is something you need to flash in the future, it should be fairly easy. Normally a flashable .zip is released soon after the official release so you won't even need a PC. Personally I think it's useless to worry about it right now.
Thibaultvw said:
And to flash that ROM, do you have to get new bootloader and baseband or what?
And go back to stock: do you mean to flash the factory image, or can you also get OTA updates by restoring a nandroid backup of the stock rom?
Click to expand...
Click to collapse
Radios and boot loaders are completely separate from ROMs. You have to specifically flash a radio or boot loader separately. But no, you should not need to flash them but it would be worthwhile if a newer version came out
username8611 said:
Radios and boot loaders are completely separate from ROMs. You have to specifically flash a radio or boot loader separately. But no, you should not need to flash them but it would be worthwhile if a newer version came out
Click to expand...
Click to collapse
I am a bit scared of flashing bootloader and baseband, because I read someone who flashed a wrong one and his phone completely got bricked. Some other guy said in that thread why would you manually flash a bootloader..
http://forum.xda-developers.com/showthread.php?t=2108247
If I restore my Nandroid backup of 4.2.2 stock ROM, am I able to get OTA update? (I dont care if I would lose root, the question is if its possible ) or is it impossible since I am running CWM recovery?
Sent from my Nexus 4 using xda app-developers app
Guys it won't be 5.0 gmail 4.3 = android 4.3
Sent from my Nexus 4 using Tapatalk 2
Hi! Im just new to this thread and just have my nexus 4
Just rooted it with toolkit (jellybean 4.2.2)
If any new update (android version) appears,is it possible that i can directly update it? Or must unroot and relock its bootloader? Tnx for any help. .
gdeath07 said:
Hi! Im just new to this thread and just have my nexus 4
Just rooted it with toolkit (jellybean 4.2.2)
If any new update (android version) appears,is it possible that i can directly update it? Or must unroot and relock its bootloader? Tnx for any help. .
Click to expand...
Click to collapse
Yes, check the OTA Helpthread http://forum.xda-developers.com/showthread.php?t=2147755.
gee2012 said:
Yes, check the OTA Helpthread http://forum.xda-developers.com/showthread.php?t=2147755.
Click to expand...
Click to collapse
Tnx but didnt find answer there sir, i mean if there is a new upate like 4.3 or 5.0 is it possible to update it officially or not? I am rooted and unlock bootloader w/o CWM
If i were to flash it,is it ok to flash it directly after flashing a custom recovery?
Sorry for many question. Im a sony Ericsson user before thats why im confused with a different method.
gdeath07 said:
Tnx but didnt find answer there sir, i mean if there is a new upate like 4.3 or 5.0 is it possible to update it officially or not? I am rooted and unlock bootloader w/o CWM
If i were to flash it,is it ok to flash it directly after flashing a custom recovery?
Sorry for many question. Im a sony Ericsson user before thats why im confused with a different method.
Click to expand...
Click to collapse
Best way is to flash the full new rom (4.3 probably) in fastboot, reroot, restore apps with Titanium Backup and you`re done. Flashing a full rom is better than updating an excisting one imo. Link for how to flash stock rom http://forum.xda-developers.com/showthread.php?t=2010312.
gee2012 said:
Best way is to flash the full new rom (4.3 probably) in fastboot, reroot, restore apps with Titanium Backup and you`re done. Flashing a full rom is better than updating an excisting one imo. Link for how to flash stock rom http://forum.xda-developers.com/showthread.php?t=2010312.
Click to expand...
Click to collapse
Will press "thanks" tomorrow due to limit
Very big difference in flashing rom compare to sony.
Just one more question,how do i flash the rom in fastboot?
gdeath07 said:
Will press "thanks" tomorrow due to limit
Very big difference in flashing rom compare to sony.
Just one more question,how do i flash the rom in fastboot?
Click to expand...
Click to collapse
Yes, it is not hard. Just follow instructions and you should be good
Fastboot:
- Power down the phone, then
- Press Volume down + Power button
That`s it
gdeath07 said:
Tnx but didnt find answer there sir, i mean if there is a new upate like 4.3 or 5.0 is it possible to update it officially or not? I am rooted and unlock bootloader w/o CWM
If i were to flash it,is it ok to flash it directly after flashing a custom recovery?
Sorry for many question. Im a sony Ericsson user before thats why im confused with a different method.
Click to expand...
Click to collapse
You can be on stock with no mods unlocked rooted with a custom recovery and you will get the ota update and it will install fine.
The ota update link will be posted here before you get on your device so it's good to have a custom recovery so you can just flash it and it will also protect you from losing root or custom recovery
Sent from my Nexus 4
spaceman860 said:
You can be on stock with no mods unlocked rooted with a custom recovery and you will get the ota update and it will install fine.
The ota update link will be posted here before you get on your device so it's good to have a custom recovery so you can just flash it and it will also protect you from losing root or custom recovery
Sent from my Nexus 4
Click to expand...
Click to collapse
im only rooted and my bootloader is unlock then everything is stock. the nxt thing that i must do is to install a custom recovery and flash the nxt update?that should be in .zip?tnx!
just learn alot of new things today by reading alot of thread even read ur post on some thread.
anyways,tnx for the help ^_^
need to learn more ^_^
I rooted my N7 (NE370T) a few months ago but can't remember how I did it. I would now like to flash a stock 4.3 ROM to it, and was looking for the safest way of doing it while retaining root. I have CWM 6.0.1.9 installed - would it be easiest to install a flashable stock rooted ROM zip from CWM? (e.g. http://forum.xda-developers.com/showthread.php?t=2376881)
I'm currently on v4.2.1 (JOP40D)
itm said:
I rooted my N7 (NE370T) a few months ago but can't remember how I did it. I would now like to flash a stock 4.3 ROM to it, and was looking for the safest way of doing it while retaining root. I have CWM 6.0.1.9 installed - would it be easiest to install a flashable stock rooted ROM zip from CWM? (e.g. http://forum.xda-developers.com/showthread.php?t=2376881)
I'm currently on v4.2.1 (JOP40D)
Click to expand...
Click to collapse
Yes it would be easiest to flash a 4.3 ROM actually. I went the way of Clean ROM 4.0 and faux kernel and I don't regret it. It came pre rooted and optimized. Though as always you should make a nandroid before you flash anything.
Also, make sure your bootloader is up to date if you have problems flashing a 4. 3 ROM
Sent from my Nexus 7 using Tapatalk 4 Beta
TheLastSidekick said:
Yes it would be easiest to flash a 4.3 ROM actually. I went the way of Clean ROM 4.0 and faux kernel and I don't regret it. It came pre rooted and optimized. Though as always you should make a nandroid before you flash anything.
Also, make sure your bootloader is up to date if you have problems flashing a 4. 3 ROM
Sent from my Nexus 7 using Tapatalk 4 Beta
Click to expand...
Click to collapse
Sorry for the dumb question, but how do I check and update my bootloader version??
Check the dev section for the latest bootloader. As for checking, you'd have to use commands in fastboot and I'm sorry I don't know them. Basically what I would do is just do as I said in the previous post. If things don't work, then it's obvious you'd need to either update Cwm or your bootloader or both.
Sent from my SGH-T999 using Tapatalk 4 Beta
You might want to have a look at my blog, there I described a very easy way for updating to 4.3
Boot loader version comes up in the bootloader screen ( vol down + vol up + power while tab is off ) .. And to flash the bootloader
Code:
fastboot flash bootloader bootloader.img
4.23 is the latest version for bootloader.
Sent from my Nexus 7
Thanks for all the help. I managed to successfully flash a pre-rooted 4.3 stock ROM from a zip using CWM recovery. I suspect that my bootloader may not be the latest but everything seems to be working OK so I guess it's OK to leave it.