downgrading firmware - Galaxy S II Q&A, Help & Troubleshooting

hi everyone,,,
i am currently on xwkl1(2.3.6) firmware and i want to downgrade it to jpkj2(2.3.5), but when i flashed through odin using a single pda file it gives me bootloop,, is there anything wrong with my method of flashing using single file,, i tried to find a 3 file odin package (pda, modem, csc) of jpkj2 but couldnt find one..

Did you check here:
http://forum.xda-developers.com/showthread.php?t=1075278

nikzDHD said:
Did you check here:
http://forum.xda-developers.com/showthread.php?t=1075278
Click to expand...
Click to collapse
Yes, i also want to do the downgrade from kl1 to jpkj2 becoz i cannot access 3g internet.
@nikz, the link mentioned just explains how to flash but not how to downgrade.
Is their an official way to downgrade?

its supposed to work .. i did this some time and it worked for me

ProNewb said:
Yes, i also want to do the downgrade from kl1 to jpkj2 becoz i cannot access 3g internet.
@nikz, the link mentioned just explains how to flash but not how to downgrade.
Is their an official way to downgrade?
Click to expand...
Click to collapse
After downgrade you have to do a wipe data/factory reset and then it work!!!

ProNewb said:
Yes, i also want to do the downgrade from kl1 to jpkj2 becoz i cannot access 3g internet.
@nikz, the link mentioned just explains how to flash but not how to downgrade.
Is their an official way to downgrade?
Click to expand...
Click to collapse
Well you can't access 3g because your apn details haven't been entered. Easy fix.
Flashing any firmware is the same process whether upgrading it downgrading. It not like an iPhone where you can't downgrade (without shsh blobs that is).
Sent from my GT-I9100

sxi200 said:
Well you can't access 3g because your apn details haven't been entered. Easy fix.
Flashing any firmware is the same process whether upgrading it downgrading. It not like an iPhone where you can't downgrade (without shsh blobs that is).
Sent from my GT-I9100
Click to expand...
Click to collapse
Yes, they are correct. i called the helpline last night to install the config settings but still cant connect.
I think i need a different modem (xxki4). is their a way to flash only the modem and save the downgrade process??

ProNewb said:
Yes, they are correct. i called the helpline last night to install the config settings but still cant connect.
I think i need a different modem (xxki4). is their a way to flash only the modem and save the downgrade process??
Click to expand...
Click to collapse
You can flash any modem you like without having to reflash firmware. You can flash zip versions in cwm recovery or tar versions in Odin, in the phone section.
Sent from my GT-I9100

Related

Where can i find stock baseband, kernal and buildnumber in a uk version ?

my phone recently deleted everything on it, such as kernal and so on. looking around i managed to get my phone to work again, but the stock software i am using is Korean, does any one know how to download a UK stock version of everything, that preferably is unlocked, or vodaphone, as i have been looking for ages, and cant find any, thanks
XXKL1 2.3.6 Open Europe
passsword:samfirmware.com
http://hotfile.com/dl/146321681/7a0247f/I9100XXKL1_I9100OXAKL1_OXA.zip.html
BUKJ3 2.3.5 U.K Vodafone
No password or samfirmware.com maybe samsung-firmwares.com
http://hotfile.com/dl/145833620/ac6907a/I9100BUKJ3_I9100VODKI2_VOD.zip.html
cooza;
BUKJ3 2.3.5 U.K Vodafone[/QUOTE said:
How do you install this one, do you use odin , and if so which part ?
Click to expand...
Click to collapse
Josshhiieeee said:
How do you install this one, do you use odin , and if so which part ?
Click to expand...
Click to collapse
follow instruction in this thread for flashing using odin and you should also find official uk firmware in one of the other posts in this thread.
http://forum.xda-developers.com/showthread.php?t=1075278
Josshhiieeee said:
How do you install this one, do you use odin , and if so which part ?
Click to expand...
Click to collapse
Sorry mate,bit busy.
Unzip file.No password needed.You will see a file that ends in tar.md5.Put this file in PDA in Odin and select START without selecting anything else.When flash is finished do a factory reset.
Done.

Still that annoying error 7?

Ok, I am lost, I don't know what I'm doing wrong but I tried to install the latest XXDLI8 leak, and I am met with error 7 in CWM.
I even downloaded and flashed the needed PDA from sammobile (which is XXBLG8_XABLG8_XXLH1) but I still get error 7? The assert check fails on PreloadInstaller
What's the deal?
Did you flash root and the modem? LH1 IIRC?
Kangburra said:
Did you flash root and the modem? LH1 IIRC?
Click to expand...
Click to collapse
I flashed Cf-root, yes, but it doesn't interfere with what the assert checks check, and I need not flash the LH1 modem since it's already in the firmware I flashed with ODIN.
I flashed i9300XXBLG8 i9300XABLG8 i9300XXLH1, which was listed as the needed PDA to flash the XXDLI8 OTA.
Theshawty said:
I flashed Cf-root, yes, but it doesn't interfere with what the assert checks check, and I need not flash the LH1 modem since it's already in the firmware I flashed with ODIN.
I flashed i9300XXBLG8 i9300XABLG8 i9300XXLH1, which was listed as the needed PDA to flash the XXDLI8 OTA.
Click to expand...
Click to collapse
you need to flash this one: I9300XXBLG8_I9300OXABLG8_I9300XXLG8_HOME.tar
and then the lh1 modem separatly or you will get the error 7.
alirey said:
you need to flash this one: I9300XXBLG8_I9300OXABLG8_I9300XXLG8_HOME.tar
and then the lh1 modem separatly or you will get the error 7.
Click to expand...
Click to collapse
Then why did Sammobile themselves link to I9300XXBLG8_I9300OXABLG8_I9300XXLH1 as the needed PDA?
Don't know why. But had the same problem. Error 7 seems to be an file checksum problem and separte flashing solves it.
Sent from my GT-I9300 using xda premium
Theshawty said:
Then why did Sammobile themselves link to I9300XXBLG8_I9300OXABLG8_I9300XXLH1 as the needed PDA?
Click to expand...
Click to collapse
Was it a hotfile link?
For me it only works without flaws if I use the odin base that perka made. Now and the I do have hiccups with it though.
Kangburra said:
Did you flash root and the modem? LH1 IIRC?
Click to expand...
Click to collapse
Root is not really required to flash the OTA. However the Rom and the modem need to be flashed separately.
Sent from my GT-I9300
---------- Post added at 11:07 AM ---------- Previous post was at 11:04 AM ----------
Theshawty said:
Then why did Sammobile themselves link to I9300XXBLG8_I9300OXABLG8_I9300XXLH1 as the needed PDA?
Click to expand...
Click to collapse
Don't use this Rom. This Rom seem to be corrupt. Instead download the LG8 Rom from goo.im and flash the LH1 modem separately.
Sent from my GT-I9300
pkoper said:
Was it a hotfile link? .
Click to expand...
Click to collapse
Indeed it was. I should have known better.
gillboyzz said:
Don't use this Rom. This Rom seem to be corrupt. Instead download the LG8 Rom from goo.im and flash the LH1 modem separately.
Sent from my GT-I9300
Click to expand...
Click to collapse
Will do.
EDIT: You mean the LG8 one Pulser has uploaded? http://goo.im/devs/pulser/GalaxyS3
Sammobile are linking to http://www.hotfile.com/dl/170853923/e311e2f/I9300XXBLG8_I9300OXABLG8_BTU.zip.html which still needs the LH1 modem flashed after the ROM flash.
It does work, but you have to flash the modem or you get the 7 error. As above the root steps are not needed, until after the OTA anyway.
Kangburra said:
Sammobile are linking to http://www.hotfile.com/dl/170853923/e311e2f/I9300XXBLG8_I9300OXABLG8_BTU.zip.html which still needs the LH1 modem flashed after the ROM flash.
It does work, but you have to flash the modem or you get the 7 error. As above the root steps are not needed, until after the OTA anyway.
Click to expand...
Click to collapse
The only reason I flash cf-root directly after odin'ing the stock ROM is to get CWM so I can flash the OTA.
Theshawty said:
Indeed it was. I should have known better.
Will do.
EDIT: You mean the LG8 one Pulser has uploaded? http://goo.im/devs/pulser/GalaxyS3
Click to expand...
Click to collapse
Nope..the original stock rom..just search with the first initials of the rom on goo
Sent from my GT-I9300
gillboyzz said:
Nope..the original stock rom..just search with the first initials of the rom on goo
Sent from my GT-I9300
Click to expand...
Click to collapse
Well I downloaded it and it seems like it's the "legit" LG8 one so I'll go with it.
Damnit, even more problems. I downloaded and flashed the correct LG8, then I cf-rooted, and installed the LH1 modem and when I finally was supposed to install the OTA, the assert check failed on /system/SW_configuration.xml and threw me an error 7.
Theshawty said:
Damnit, even more problems. I downloaded and flashed the correct LG8, then I cf-rooted, and installed the LH1 modem and when I finally was supposed to install the OTA, the assert check failed on /system/SW_configuration.xml and threw me an error 7.
Click to expand...
Click to collapse
So you odin flashed the base rom
then odin flashed cf-root
boot into cwm and flash LH1 and OTA (no reboot between) and error 7?
Weird. Something wrong with one of those files.
Theshawty said:
Damnit, even more problems. I downloaded and flashed the correct LG8, then I cf-rooted, and installed the LH1 modem and when I finally was supposed to install the OTA, the assert check failed on /system/SW_configuration.xml and threw me an error 7.
Click to expand...
Click to collapse
Pls dont root until fully cooked. Here are my steps.
Do factory reset before flashing
Flash stock BLG8 rom through odin and restart.
On the startup screen where you choose the lang, dont proceed further. Just restrart in the download mode again.
Flash the LH1 modem through odin and restart and again on the startup screen restart the phone in recovery mode. Do factory reset and chose the OTA file flash through recovery. Let the upgarde complete. Dont reboot, just do factory reset again and enjoy the leak.
You may root now if required.
Sent from my GT-I9300
Theshawty said:
I flashed Cf-root, yes, but it doesn't interfere with what the assert checks check, and I need not flash the LH1 modem since it's already in the firmware I flashed with ODIN.
I flashed i9300XXBLG8 i9300XABLG8 i9300XXLH1, which was listed as the needed PDA to flash the XXDLI8 OTA.
Click to expand...
Click to collapse
I initially had the exact same problem .. so I downloaded the I9300BLG8 base Rom again , but the one without the LH1 modem built in and then flashed LH1 modem after flashing the base Rom. This sorted out my problem .. using this method has been working flawlessly ever since XXDLI4 for me .. worth a shot mate .
Sent from my GT-I9300 using xda app-developers app
Kangburra said:
So you odin flashed the base rom
then odin flashed cf-root
boot into cwm and flash LH1 and OTA (no reboot between) and error 7?
Weird. Something wrong with one of those files.
Click to expand...
Click to collapse
Those are the exact steps I took. None of the files seem borked either.
bazzazz said:
I initially had the exact same problem .. so I downloaded the I9300BLG8 base Rom again , but the one without the LH1 modem built in and then flashed LH1 modem after flashing the base Rom. This sorted out my problem .. using this method has been working flawlessly ever since XXDLI4 for me .. worth a shot mate .
Sent from my GT-I9300 using xda app-developers app
Click to expand...
Click to collapse
Same here, never used the one with the modem in it.
---------- Post added at 08:02 PM ---------- Previous post was at 08:00 PM ----------
gillboyzz said:
Pls dont root until fully cooked. Here are my steps.
Do factory reset before flashing
Flash stock BLG8 rom through odin and restart.
On the startup screen where you choose the lang, dont proceed further. Just restrart in the download mode again.
Flash the LH1 modem through odin and restart and again on the startup screen restart the phone in recovery mode. Do factory reset and chose the OTA file flash through recovery. Let the upgarde complete. Dont reboot, just do factory reset again and enjoy the leak.
You may root now if required.
Sent from my GT-I9300
Click to expand...
Click to collapse
How do you get odin to flash an OTA file? I thought the whole point of the cf-root was to get to cwm? Did I miss something here?
Kangburra said:
Same here, never used the one with the modem in it.
---------- Post added at 08:02 PM ---------- Previous post was at 08:00 PM ----------
How do you get odin to flash an OTA file? I thought the whole point of the cf-root was to get to cwm? Did I miss something here?
Click to expand...
Click to collapse
Nope.. you can't flash the ota file through odin. Refer to my steps above, once the modem is flashed through odin, you use tge stock recovery to flash the OTA
Sent from my GT-I9300

[Q] Flash newer stock ROM w/o changing Modem

If I wanted to upgrade to an upcoming version of Android released in whatever region got it first, how would I do to flash it through Odin without losing my region's Modem?
I know I could simply re-flash it after completing the newer rom installation, but I'd like to know if I could skip that step.
Thanks for any help.
Slazur said:
If I wanted to upgrade to an upcoming version of Android released in whatever region got it first, how would I do to flash it through Odin without losing my region's Modem?
I know I could simply re-flash it after completing the newer rom installation, but I'd like to know if I could skip that step.
Thanks for any help.
Click to expand...
Click to collapse
With Mobile Odin, you can clear the modem section and keep the current modem during the flash.
donalgodon said:
With Mobile Odin, you can clear the modem section and keep the current modem during the flash.
Click to expand...
Click to collapse
Eh, if I need to root to use Mobile Odin then I'd rather wait until my warranty expires to do so, so I'd have to discard that option.
Thank you for the reply, though,
you can unroot at any time and regain warranty

G965F downgrade

Hi all,
I want to downgrade from G965FXXUAETG3 to G965FXXS7DTB1 because this modem is not supported by chimeratool. Please let me know any possibility by any means.
Regards
hainguyenthao said:
No way to downgrade, but why u want to ? do u need patch cert or what ?
Click to expand...
Click to collapse
I want to change IMEI and patch cert with chimera tool but current modem is unsupported so want to go back to supported modem which is on 8th binary else my lovely phone is unusable.
Any suggestion related to patch cert?
I got a customer who wants to downgrade from Android 10 to 8. I know Samsung has anti-downgrade protection and you can't flash older firmware using Odin.
What about rooting the phone first though and flashing the Android 8 firmware using TWRP? Wouldn't that work?
patr1xcore said:
I got a customer who wants to downgrade from Android 10 to 8. I know Samsung has anti-downgrade protection and you can't flash older firmware using Odin.
What about rooting the phone first though and flashing the Android 8 firmware using TWRP? Wouldn't that work?
Click to expand...
Click to collapse
My phone is already rooted and do you have any guide how can I flash complete firmware through twrp with bootloader. Actual problem is bootloader which can't initialize previous version of modem. I have downgraded modem but it does not pick IMEI.
patr1xcore said:
I got a customer who wants to downgrade from Android 10 to 8. I know Samsung has anti-downgrade protection and you can't flash older firmware using Odin.
What about rooting the phone first though and flashing the Android 8 firmware using TWRP? Wouldn't that work?
Click to expand...
Click to collapse
You'd have to flash system, vendor and a kernel that can run Android 8. Just flashing the firmware straight up won't work
ShaDisNX255 said:
You'd have to flash system, vendor and a kernel that can run Android 8. Just flashing the firmware straight up won't work
Click to expand...
Click to collapse
Is it possible? I've never done that.
patr1xcore said:
Is it possible? I've never done that.
Click to expand...
Click to collapse
I mean, I've done it on other Samsung phones, yes. Updated officially to Pie and then flashed an Oreo ROM that includes system, vendor and kernel images and it runs fine.
ShaDisNX255 said:
I mean, I've done it on other Samsung phones, yes. Updated officially to Pie and then flashed an Oreo ROM that includes system, vendor and kernel images and it runs fine.
Click to expand...
Click to collapse
How you have done it? Samsung boot loader won't allow you to downgrade !
galliard said:
How you have done it? Samsung boot loader won't allow you to downgrade !
Click to expand...
Click to collapse
I don't need to downgrade bootloader, just need to flash the ROM which includes system, vendor and a working kernel.
I'm speaking strictly about running Android 8, not downgrading. So this method of downgrading to Oreo probably won't help you on your problem
Can we do it with firmware combination file or eng modem?
I install alexndr stock oreo rom from android file host.But i see that CSC is from east europe and i am from west europe(Croatia).I cant get the mobile data to work and the IMEI is empty i tried to install older modem and the latest modem but doesent work.What should i do?
IZIPIZI135 said:
I install alexndr stock oreo rom from android file host.But i see that CSC is from east europe and i am from west europe(Croatia).I cant get the mobile data to work and the IMEI is empty i tried to install older modem and the latest modem but doesent work.What should i do?
Click to expand...
Click to collapse
You posted in wrong thread, however flash complete firmware from odin and then do customization.
galliard said:
You posted in wrong thread, however flash complete firmware from odin and then do customization.
Click to expand...
Click to collapse
what firmware do i flash?
Anybody please tell me that can I downgrade with combination firmware?
galliard said:
Anybody please tell me that can I downgrade with combination firmware?
Click to expand...
Click to collapse
I guess we both having same issue. I upgraded to UAETG3 and the mobile signals were gone. IMEI status is 'NG' and it says emergency calls only. The binary of aforesaid update is higher and it won't let me downgrade. Have you found a solution?
matrixology said:
I guess we both having same issue. I upgraded to UAETG3 and the mobile signals were gone. IMEI status is 'NG' and it says emergency calls only. The binary of aforesaid update is higher and it won't let me downgrade. Have you found a solution?
Click to expand...
Click to collapse
Try to flash complete firmware from odin and if not then your efs is corrupted !
I think combination file might downgrade with re partition
Any information how to downgrade modem and bootloader?

Odin download product name is different from baseband version on software info. i've had no updates since feb 2019. stuck on android 9

i purchased my s9+ online from Jumia in NIgeria. there are no available OTA upgrades. phone says no available update info.
i've tried Odin to no avail. i don't seem to find a working download for kies.
software info attached.
in odin download mode the following conflicting info.
product name sm-g965n
current binary: custom
erp and dem lock: off
sec download enabled
warranty void
asb_version 8
etc.
i have downloaded the following ROM and tried to flash via odin from sammobile:
G965FXXSDFTL1_G965FOXMDFTL1_ECT
it fails on repartition. i enclose scr shot.
also when i use the on phone check for csc it gives something different (see attached)
i would like ideally to return to samsung official rom so n can get all latest updates.
i havent done anything to the phone in terms of rooting etc, it came rooted (or partially) and with custom rom installed.
please help!
boogie73 said:
i purchased my s9+ online from Jumia in NIgeria. there are no available OTA upgrades. phone says no available update info.
i've tried Odin to no avail. i don't seem to find a working download for kies.
software info attached.
in odin download mode the following conflicting info.
product name sm-g965n
current binary: custom
erp and dem lock: off
sec download enabled
warranty void
asb_version 8
etc.
i have downloaded the following ROM and tried to flash via odin from sammobile:
G965FXXSDFTL1_G965FOXMDFTL1_ECT
it fails on repartition. i enclose scr shot.
also when i use the on phone check for csc it gives something different (see attached)
i would like ideally to return to samsung official rom so n can get all latest updates.
i havent done anything to the phone in terms of rooting etc, it came rooted (or partially) and with custom rom installed.
please help!
Click to expand...
Click to collapse
Flash correct version of the firmware. It looks like your phone is running custom rom. Download the Korean firmware (N) and try to flash with odin.
sinkoo1979 said:
Flash correct version of the firmware. It looks like your phone is running custom rom. Download the Korean firmware (N) and try to flash with odin.
Click to expand...
Click to collapse
same result unfortunately using g965N.
boogie73 said:
same result unfortunately using g965N.
Click to expand...
Click to collapse
on the phone it says secure check tail: (PIT)
boogie73 said:
on the phone it says secure check tail: (PIT)
Click to expand...
Click to collapse
Try odin 3.13.1_3b
sinkoo1979 said:
Try odin 3.13.1_3b
Click to expand...
Click to collapse
All done. it worked. wiped out my data though. anyway all backed up.
boogie73 said:
All done. it worked. wiped out my data though. anyway all backed up.
Click to expand...
Click to collapse
thank you. much appreciated
boogie73 said:
thank you. much appreciated
Click to expand...
Click to collapse
I have the same problem!
Can you help me with how you solved it !? TnX
Zomby77 said:
I have the same problem!
Can you help me with how you solved it !? TnX
Click to expand...
Click to collapse
have you solved as yet?
read the thread fully.
if not the issue was solved by using an older version of Odin.
you need the appropriate ROM for your region, in your case as was mine you need firmware from Korea (N).

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