[Q] Downgrade question - Galaxy S II Q&A, Help & Troubleshooting

Is it possible to downgrade from 4.03 to 2.3.6? Can I do it through Odin? what problems, if any would occur?? Thanks in advance guys

You can flash any BG rom with odin. You may have to wipe but I'm not sure
Sent from my sgs2 running cm9

I went from 4.0.4 to 2.3.6 without any problems. I flashed through CWM though.

TudorBlue said:
Is it possible to downgrade from 4.03 to 2.3.6? Can I do it through Odin? what problems, if any would occur?? Thanks in advance guys
Click to expand...
Click to collapse
You can downgrad/upgrade as you whish by Odin or using CMW if your phone is already rooted. I recommand you a full wipe. There is is no particular problem if you follow recommandations step by step. You can find all informations to how safely and neatly flash your rom here on forum, just need a lilttle research.
gl

I havent rooted my phone. I want to install a stock 2.3.6, can I still downgrade on an unrooted phone?

if you can search for rooted kernel in GB why not then.. Or try this one http://forum.xda-developers.com/showthread.php?t=1384134

Related

On LQ5 firmware. Help please

I am on stock LQ5 firmware & kernel without root.
After hearing about all this stuff about LQ5, I tried to flash Siyah kernel 3.3.3b. But it didn't succeed. Still my phone is working.
But can anybody help me how to get rid of I9100XXLQ5.
Please help.
Just flash a new FW with ODIN. I flashed KH3 (GB) one, because it's wipe and then LPF (ICS) on my GF phone with no problems.
I'm still using LQ5 (everything stock)...best ROM so far
r3vo said:
Just flash a new FW with ODIN. I flashed KH3 (GB) one, because it's wipe and then LPF (ICS) on my GF phone with no problems.
I'm still using LQ5 (everything stock)...best ROM so far
Click to expand...
Click to collapse
I have XWKL1 Gingerbread. Can I flash it to be safe from LQ5. Will it brick my phone.
You are still on LQ5. Why? How it is safe?
I am too on XXLQ5 with no root & no custom kernel.
Working fine. No issues. Stable ROM.
tariq2kn said:
I am too on XXLQ5 with no root & no custom kernel.
Working fine. No issues. Stable ROM.
Click to expand...
Click to collapse
How it is safe.
Will it brick on flashing any new firmware?
sekhargreen said:
How it is safe.
Will it brick on flashing any new firmware?
Click to expand...
Click to collapse
It will not if you use Odin. Just don't use CWM.
You still can root using other than cfroot method if you like.
Using temp cwm just don't wipe while on it.
I'm still on it, but thinking to remove it because **** happens and I tend to forget stuff.
But have to say its the ICS that should be on every S2. Hope official 4.04 start raining soon
keep calm u can save ur phone
flash a 4.0.3 ics release from samsung via odin
and your phone will be safe
stay away from any type of wipe from recovery its better not to take risk
I had your same situation.
I flashed litening 3.2 via odin, so i got rid of 4.04 and i restored a backup
Now im with Neatrom.

Downgrade from ics 4.0.4? how?

hello, i bought a galaxy s2 used with 4.0.4, i want to downgrade to 4.0.3
the videocall dont work for me at 4.0.4
how can i downgrade without brick?
thanks
j12j34j said:
hello, i bought a galaxy s2 used with 4.0.4, i want to downgrade to 4.0.3
the videocall dont work for me at 4.0.4
how can i downgrade without brick?
thanks
Click to expand...
Click to collapse
choose the correct 4.0.3 stock rom and flash the same thro Odin
Flash through odin. I doesn't matter whether it is Gingerbread or ICS.
But do not use CWM to wipe. You will brick it.
Good luck!
sekhargreen said:
Flash through odin. I doesn't matter whether it is Gingerbread or ICS.
But do not use CWM to wipe. You will brick it.
Good luck!
Click to expand...
Click to collapse
Can I wipe safely after downgrade from bugged 4.0.4 to stock 4.0.3?
vojtas14 said:
Can I wipe safely after downgrade from bugged 4.0.4 to stock 4.0.3?
Click to expand...
Click to collapse
If you have successfully downgraded to 4.0.3, You are 100% safe and can therefore Wipe anything
vojtas14 said:
Can I wipe safely after downgrade from bugged 4.0.4 to stock 4.0.3?
Click to expand...
Click to collapse
After changing rom just flash Siyah kernel over any stock kernel, Its much better anyway.
TheATHEiST said:
After changing rom just flash Siyah kernel over any stock kernel, Its much better anyway.
Click to expand...
Click to collapse
I flashed Siyah over the stock kernel. Would it be safe to wipe in CWM now (using 4.0.4, XXLQ6)
coltsmild said:
I flashed Siyah over the stock kernel. Would it be safe to wipe in CWM now (using 4.0.4, XXLQ6)
Click to expand...
Click to collapse
If you are sure you have flashed Siyah kernel (Goto Settings - About to confirm), then you are now 100% safe. You can wipe anything uhh CWM recovery without any fear
Swyped from my Samsung Galaxy SII
Root M250s ICS 4.0.4
Hi I am using T Mobile Korean version of S2 with ICS 4.0.4. Please find attachment for further device info.
I really appreciate if any one could help me in rooting this particular version. I tried many ways no luck. Point out to the files to flash.
Thanks in advance
Hi
I want to try a GB ROM for some batt tests but I'm not too sure on something. (I currently have the ICS Alliance ROM 4.1& Siyah-s2-v5.0.1kernel)
Can i simply flash the GB modded ROM i have in CWM the normal way ? i ask cus i see some talk of needing bootloaders when downgrading ( i haven't a clue what a bootloader is)
Many Thx
Peace
nsandol the
Sun90 said:
choose the correct 4.0.3 stock rom and flash the same thro Odin
Click to expand...
Click to collapse
Bro how to download the correct 4,0.3. rom and odin? .
and if you can please advise me step by step Downgrade procedure..many thanks.

How to downgrade 4.0.4?

Hi all when i flashed the firmware,i realised the firmware was 4.0.4. BUt when i saw it from sammobile, it was clearly for 4.0.3(i dont know what happend). So how do i downgrade the firmware? Do i just flash the 4.0.3 firmware?
Varcolac said:
Hi all when i flashed the firmware,i realised the firmware was 4.0.4. BUt when i saw it from sammobile, it was clearly for 4.0.3(i dont know what happend). So how do i downgrade the firmware? Do i just flash the 4.0.3 firmware?
Click to expand...
Click to collapse
Yes,why do u want to create one more thread for this ma8
Reading your other threads,I think you need to make your mind up what you want.
If you are not capable of determining between 4.0.3 and 4.0.4 firmware,then post your firmware and Ill post a link for you to click on........lol
Well erm im pretty confused myself... I wanted to install the 4.0.3 firmware.so i went to sammobile.i downloaded 4.0.3 buft when i flashed it,i it came up as 4.0.4 and im so confused because on other threads they say 4.0.4 has a hardbrick bug. So now i want firmware version 4.0.3
So what i want is 4.0.3, but my current firmware is 4.0.4. How to i downgrade it?
Varcolac said:
So what i want is 4.0.3, but my current firmware is 4.0.4. How to i downgrade it?
Click to expand...
Click to collapse
You need:
-stock firmware (just download any 4.0.3 firmware from sammobile.com)
-odin
-correct Samsung USB drivers
and follow these steps here
cheers!
saywhatt said:
You need:
-stock firmware (just download any 4.0.3 firmware from sammobile.com)
-odin
-correct Samsung USB drivers
and follow these steps here
cheers!
Click to expand...
Click to collapse
What about the kernel?i have siyah 4.15. Will it affect the process or anything?
Varcolac said:
What about the kernel?i have siyah 4.15. Will it affect the process or anything?
Click to expand...
Click to collapse
hey dude, if u have siyah kernel and if u flash stock ICS 4.0.3 firmware thro ODIN then the siyah kernel will be replaced with the stock 4.0.3 firmwares kernel and ur phone will be unrooted
Oh.. Okay. Thanks. Btw is aroma installer with the siyah kernel or it has to be downloaded separately?
Isnt aroma installer included in a rom.If so,what do you want it for if your using stock rom.
If your thinking of using a custom rom,then why are you bothering changing to 4.0.3 stock.
Using like the siyah kernel on here you will not be affected by the brickbug as the cap erase is disabled.
This is why you need to make your mind up as youll end up in trouble.
hi whenever i start up my phone when i flashed 4.0.3, it will say android.process.acore has stopped and leaves my phone unusable. what do i do now?
oh nevermind i fixed it. Thanks for all your great help! im on revolt JB now
I thought Im the only one who's been fooled by sammobile. I got the same situation..
I've downloaded all (as attached) and I flashed my device with this ROM; I9100DXLPF_I9100OLBLPF_XME, from sammobile.
It says 4.0.3, but turns out after flashing it, actually is 4.0.4 (About Phone properties).
Im not 100% sure. Is it safe for me to do this steps?
1) With Odin, I flash other official rom from sammobile (I9100DXLPB_I9100OLBLPA_XME or I9100DXLP9_I9100OLBLP9_XME).
2) If the flashing process successful, let the phone reboot (and I don't go into stock recovery to ANY wipe!!!)
3) I just continue use it since data is still intact.
Please warn me if any one of my methods above is dangerous..

[Q] Assistance needed with first root of SG2 i9100

Hi guys. I have been a frequent visitor and learned alot about android and features. I am ready to root my galaxy s2 i9100
My details are :
Android version: 4.04
Model number gt-i9100
Baseband version: i9100XXLQ6
Kernal version: I9100xxlbq-cl911584
build number: IMM76D.XXLQB
I downloaded
ODIN 1.85
CF-Root-SGS2_XX_XEO_LQB-v5.6-CWM5
I am not seeing the original kernal file up for download for my version. What else do I need for my root? Is there any advice such as best method and such. Thank you kindly everyone. Mods, if I posted in the wrong section, please move my thread to the correct location.
That's all you need mate. This kernel is declared safe by Chainfire but as any 4.0.4 kernel should not be used to wipe data because of possibility of emmc cap bug rendering your phone bricked. Root with this kernel but make sure to switch to custom safe one before attempting to wipe data.
Best of luck
Sent from my GT-I9100 using Tapatalk 2
daxgirl said:
That's all you need mate. This kernel is declared safe by Chainfire but as any 4.0.4 kernel should not be used to wipe data because of possibility of emmc cap bug rendering your phone bricked. Root with this kernel but make sure to switch to custom safe one before attempting to wipe data.
Best of luck
Sent from my GT-I9100 using Tapatalk 2
Click to expand...
Click to collapse
Which one would you recommend for wiping data? i assume by wiping data you mean unrooting. am I right?
wargrafix said:
Which one would you recommend for wiping data? i assume by wiping data you mean unrooting. am I right?
Click to expand...
Click to collapse
check here you'll find your answers http://forum.xda-developers.com/showthread.php?t=1756242
slimlo said:
check here you'll find your answers http://forum.xda-developers.com/showthread.php?t=1756242
Click to expand...
Click to collapse
Essentially flashing using a 4.04 firmware will brick the phone? or is it when I flash, it will be bad to flash using a 4.04 firmware? Sooo confused.
If anyone has the steps what I should do, please tell me. I am worried about bricking.
If I root the phone, when official JB comes out, will I be able to update?
any help guys? The thread isn't very clear what do I do if I have this kernal. Do I downgrade before rooting?
Insted of flashing that Cf root kernel with Odin or Cwm, flash Siyah 4.1.5.
www.gokhanmoral.com
Sent from my GT-I9100
The link, do I root with those? if I do, what will it change?
wargrafix said:
Hi guys. I have been a frequent visitor and learned alot about android and features. I am ready to root my galaxy s2 i9100
My details are :
Android version: 4.04
Model number gt-i9100
Baseband version: i9100XXLQ6
Kernal version: I9100xxlbq-cl911584
build number: IMM76D.XXLQB
I downloaded
ODIN 1.85
CF-Root-SGS2_XX_XEO_LQB-v5.6-CWM5
I am not seeing the original kernal file up for download for my version. What else do I need for my root? Is there any advice such as best method and such. Thank you kindly everyone. Mods, if I posted in the wrong section, please move my thread to the correct location.
Click to expand...
Click to collapse
I actually have the same HW version in my new SGS2 and I have checked with eMMC check (downloaded from Google Play) that my chip is safe from "brick bug" :laugh:
Now the question is: which kernel to choose, CF or Siyah ? I'm planning to use CyanogenMod 10 on this phone, does kernel version matter at all in this case ?
/edit:
ROM will be either original CM10 or one of the variants (like HellyBean for example)
ZDQ said:
I actually have the same HW version in my new SGS2 and I have checked with eMMC check (downloaded from Google Play) that my chip is safe from "brick bug" :laugh:
Now the question is: which kernel to choose, CF or Siyah ? I'm planning to use CyanogenMod 10 on this phone, does kernel version matter at all in this case ?
/edit:
ROM will be either original CM10 or one of the variants (like HellyBean for example)
Click to expand...
Click to collapse
If GotBrickbug app by CF said your chip is safe than it shouldn't matter what kernel you use. Safe hardware.
Personally I always prefer rooting with CF kernels that match my FW version. Then if you're still unsure about the chip... flash siyah, go to advanced (while still in recovery) > reboot recovery. Then wipe data with siyah kernel just to be on the safe side. I always keep siyah 3.5.2 (the first transisiontl ics/jb kernel) for those purposes. CM10 built in kernels are all considered safe so that's the last time you'll ever be worried about it.
Best of luck, man
Thank you very much, I ran emmc check and I have a sane chip.
if I flash with the CF LBQ, what is my next step?
wargrafix said:
Thank you very much, I ran emmc check and I have a sane chip.
if I flash with the CF LBQ, what is my next step?
Click to expand...
Click to collapse
your phone will be rooted and u can then choose to install a custom kernel like Siyah v 4.1.5 on ur phone which gives u the latest CWM recovery thro which u can install any custom rom of ur choice(meant for i9100 though) on ur phone
Thank you very much!
If my questions seemed noobish, its because I want to be very sure. It my first expensive phone.
a question though, When samsung upgrades us to JB, will I be able to update it?
wargrafix said:
Thank you very much!
If my questions seemed noobish, its because I want to be very sure. It my first expensive phone.
a question though, When samsung upgrades us to JB, will I be able to update it?
Click to expand...
Click to collapse
Samsung releases firmware in various regions and with varied carriers. So I bet that till it is officially released it will take time but when it does you will get OTA if your are on 'STOCK' ROM. but if you move away to custom rom then you will have to update manually.
Sent from my GT I-9100 with CM10 JellyBean L.O.V.E. via Tapatalk 2
So essentially I need to revert to 4.04 stock to upgrade? How do I do that?
wargrafix said:
So essentially I need to revert to 4.04 stock to upgrade? How do I do that?
Click to expand...
Click to collapse
To revert back assuming you didn't do backup before, download 4.0.4 firmware for your region on sammobile and flash it using odin.. Then to upgrade it when official update are up just hit OTA, kies, or flash it via odin the same way like you flash 4.0.4..
If you don't have idea how to flash then google it, theres plenty much tutorials out there.. hope it helps
Ohhhhhh. I get it. Flash using CF, or CM 10, use triangle app to remove warning triangle and if I need to unroot, flash with 4.04 (my region) using odin? Sound pretty simple. Am I missing any steps?
wargrafix said:
Ohhhhhh. I get it. Flash using CF, or CM 10, use triangle app to remove warning triangle and if I need to unroot, flash with 4.04 (my region) using odin? Sound pretty simple. Am I missing any steps?
Click to expand...
Click to collapse
Actually I get confused myself hehe, by "Flash using CF, or CM 10" you mean flash what? The rest are ok..
Well, let's put this simple, Flash the CF-Root for your phone then you're rooted now, if you want to flash custom rom such as cm10 then flash it (the cm10 zip file to be flashed on recovery mode and don't forget to read the cm10 instruction before & after flashing), if you want to get rid of the triangle then do it with triangle away, finally to unroot and revert to stock, just flash stock firmware via odin..
Hi everyone! I just rooted my phone and it was sooo easy.
Thank you so much. Your advice and help definitely made it much easier than I though.
Yeah, welcome to the rooted world where you can explore more with your phone
Sent from my GT-I9100

[Q] brick bug

Hi .. i originally rooted my phone using " zirggles " ? it was something on you tube i found ! well it worked untill my s2 updated to 4.0.4 then i lost part of my root. i still have titanium back up ... but if i run root checker it says i don't have proper root. and some apps i cant download. i have checked and i do have an insane chip ! i want to root my phone properly again, but i know with this chip its risky. would it be ok to flash 4.0.3 firmware .. would this get rid of the brick bug ? if so is there somewhere i can download the firmware ? im curently on XXLQ6 or is there another way of rooting my phone properly again ? i have super user on the phone but it says outdated binary. please be understanding as i only joined yesterday and i am a total noob to this all
CHEERS GUYS
Flash Siyah kernel 4.1.5. with Odin i Download mode.
Sent from my GT-I9100
strommy1966 said:
Hi .. i originally rooted my phone using " zirggles " ? it was something on you tube i found ! well it worked untill my s2 updated to 4.0.4 then i lost part of my root. i still have titanium back up ... but if i run root checker it says i don't have proper root. and some apps i cant download. i have checked and i do have an insane chip ! i want to root my phone properly again, but i know with this chip its risky. would it be ok to flash 4.0.3 firmware .. would this get rid of the brick bug ? if so is there somewhere i can download the firmware ? im curently on XXLQ6 or is there another way of rooting my phone properly again ? i have super user on the phone but it says outdated binary. please be understanding as i only joined yesterday and i am a total noob to this all
CHEERS GUYS
Click to expand...
Click to collapse
4.0.3 firmware is safe, the issue exists only in stock 4.0.4 ICS and if you are on 4.0.4 ICS don't perform any type of wipe, reset etc... Flash 4.0.3 firmware or lower version's like gingerbread or any custom rom with custom kernels, also custom kernels for 4.0.4 version's are safe theoretically but i still wont recommend it because I have seen people brick their phone from CWM, so the problem is with the kernel which has eMMc cap erase command, most custom kernels don't have it, but be warned an old Siyah kernel has it so use the newest one.
For the sake of safety i recommend that you flash 4.0.3 via Odin.
Sent from my Galaxy Tab 7.0 Plus
I thank people who write helpful posts, so i expect the same.
king_below_my_lord said:
4.0.3 firmware is safe, the issue exists only in stock 4.0.4 ICS and if you are on 4.0.4 ICS don't perform any type of wipe, reset etc... Flash 4.0.3 firmware or lower version's like gingerbread or any custom rom with custom kernels, also custom kernels for 4.0.4 version's are safe theoretically but i still wont recommend it because I have seen people brick their phone from CWM, so the problem is with the kernel which has eMMc cap erase command, most custom kernels don't have it, but be warned an old Siyah kernel has it so use the newest one.
For the sake of safety i recommend that you flash 4.0.3 via Odin.
Sent from my Galaxy Tab 7.0 Plus
I thank people who write helpful posts, so i expect the same.[/QUOTE
sorry to ask again .. but which Siyah would you suggest then ? as i have a partial root .. as i lost full root when my phone updated, doing this wont " mess " up my phone ?
thanks
Click to expand...
Click to collapse
king_below_my_lord said:
4.0.3 firmware is safe, the issue exists only in stock 4.0.4 ICS and if you are on 4.0.4 ICS don't perform any type of wipe, reset etc... Flash 4.0.3 firmware or lower version's like gingerbread or any custom rom with custom kernels, also custom kernels for 4.0.4 version's are safe theoretically but i still wont recommend it because I have seen people brick their phone from CWM, so the problem is with the kernel which has eMMc cap erase command, most custom kernels don't have it, but be warned an old Siyah kernel has it so use the newest one.
For the sake of safety i recommend that you flash 4.0.3 via Odin.
Sent from my Galaxy Tab 7.0 Plus
I thank people who write helpful posts, so i expect the same.
Click to expand...
Click to collapse
ok thanks for the advice .. if i was to use a Siyah kernel, which one would you suggest ? would i have to use odin to do this ? i have CWM on my phone, so could i do it from the phone rather than odin ? if i can, would i need to put the new kernel on the external SD card ?
thanks a million
strommy1966 said:
ok thanks for the advice .. if i was to use a Siyah kernel, which one would you suggest ? would i have to use odin to do this ? i have CWM on my phone, so could i do it from the phone rather than odin ? if i can, would i need to put the new kernel on the external SD card ?
thanks a million
Click to expand...
Click to collapse
dwnld the tar file of siyah v4.1.5 (for galaxy S2) and flash the same using 'Odin', since its the best way ma8
Latest Siyah 5.0.1 should not be a problem as well. Using it for a week now.
Sent from my GT-I9100
strommy1966 said:
ok thanks for the advice .. if i was to use a Siyah kernel, which one would you suggest ? would i have to use odin to do this ? i have CWM on my phone, so could i do it from the phone rather than odin ? if i can, would i need to put the new kernel on the external SD card ?
thanks a million
Click to expand...
Click to collapse
Use the latest Siyah its pretty amazing, i consider Odin as the safest method, even though if you can obtain Siyah as a zip file you can do it via CWM which is also a pretty safe and easy method for noobs, if you downloaded a tar flash via Odin or Mobile Odin.
Sent from my Galaxy Tab 7.0 Plus
I thank people who write helpful posts, so i expect the same.

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