How I downgrade from ICS to Gingerbread 2.3.5? - Galaxy S II Q&A, Help & Troubleshooting

Good moring everyone.
I would like to downgrade to Gingerbread 2.3.5 after updating from ICS through Kies couple days ago,As Ice Cream Sandwich is a complete failure on S2 there nothing special,Face-unlock: Too long time before the camera opens., it quicker just unlock with your finger,interface is the same, Battery seem to suck more juice only last day even though i got Genuine Samsung Extended Battery Kit for Galaxy S2 - 2000mAh where GB last 3 day plus dodgey lockscreen and etc the only best bit is in Setting. ICS and Samsung deffo need more work to it.
So would like to no how to go back to GB 2.3.5?
Im on 3UK here detail of GB on my phone before ics
PDA XWKI8
Phone NEKI8
CSC H3GI2
PS i done google search and most links are dead on here aswell.
Plz Help

Download odin flash tool.
Go to sammobile.
Make a registration and login.
Download firmware you prefer.
Flash with odin.
Make a deep reset
Done!
Inviato dal mio GT-I9100

before downgrade, did you try a wipe? this fix 2 of my friend battery problem
Sent from my GT-I9100 using XDA

If you really want back to Three's Gingerbread ROM
http://www.filefactory.com/file/c423f20/n/GT-I9100_H3G_I9100XWKI8_I9100H3GKI2_I9100NEKI2.tar.zip
KI8 ^ Stock firmware I downloaded it from Intras thread a while back.
Unzip > flash with odin in PDA > clear cache from recovery after flash.

which ICS firmware you're using ?
Do you want to go back to a stock GB firmware or a custom ROM?
Sent from my GT-I9100 using Tapatalk

mekhonte said:
which ICS firmware you're using ?
Do you want to go back to a stock GB firmware or a custom ROM?
Sent from my GT-I9100 using Tapatalk
Click to expand...
Click to collapse
Im using the official Stock ICS that came though Kies
ICS Detail
PDA I9100XXLPQ
phone I9100NELP2
CSC I9100H3GLP2
so i like to retrun GB Official Firmware

It can be done.I had a custom XXLPH 4.0.3 ICS rom that I flashed via odin onto my galaxy S2.
I'm going through the same process now, going back to an original orange stock rom.
I downloaded an integrated package via check fus downloader and tried (as read and advised to load into Odin PDA box, check re- partition, have phone in USB debug mode, download mode on phone and flash.
However be careful as I'm finding out the (compressed / encrypted) ENC2 file that I downloaded is invalid so its causing me problems to install.
However to prove a point downgrading is easy, I have a copy of gingerbread 2.3.5 that is already split into various files to fill in the PHONE, PDA, PIT, CSC boxes in Odin.
This flashed over the ICS no problem.
So hopefully when I manage to download an uncorrupted Orange stock rom I'm sure it will work too!

http://forum.xda-developers.com/showthread.php?t=1554355
Here's the answer!!

Is deep sleep? You can check with CPU-Spy. If not, remove the battery a few minutes and then returned.

I put 2.3.5 Orange rom back on temporarily, noticed the battery drain rather quick, don't know why anyone bothers downgrading or putting original stock rom back on their phones.
Changed network anyway to different sim package and I put ICS 4.0.3 UK carphone warehouse on the phone, no bloatware and battery doesn't drain now.
I'm going to stick with 4.0.3
Got roms from here:
http://www.sammobile.com/firmware/?page=3&t=1&o=1&m=GT-I9100&r=1

stock firmware dzkl3
hi guys i have tried to find stock firmware of i9100g dzkl3 2.3.5 gingerbread here but couldn't found, now running stock ICS and i feel so slow with browsing experience and the background data could not be turn off. ICS consume more battery life compare to GB, now my current specs of ICS is dxlp6 thanks guys

i bought a galaxy s2 I9100 well got a virgin contract, turn it on and found it already had ics on not gb, gave it a try and its got lots of little problems, bbc i player and youtube app wont work because flash player wont fire up, wifi keep going on and off, i see that odin flash seem to be the answer but i cant work out the proper uk gb for my phone. just moved on from x8 and that seemed so much easyer, can anyone help pls

Download latest GB ROM for your phone model/country, do full wipe /factory reset and flash GB via Odin.
Odoslané z GT-I9100 cez Tapatalk 2

first time ihave s2 2 months ago..it comes with ICS.im flashing custom ROM ics for 10 time...my problem is i have an mobile banking app that cant work in ICS.
but few days ago i try to downgrade to GB Checkrom...what..this ROM is much better in compatibility of apps,speed,stability,customization than ICS.
So in my opinion..directly flash Checkrom HD v6 from CWM...its really good
sorry for my bad english

a lot of the apps i use only seem to work on my old x8 on gb not ics and now im finding the same problems with galaxy s2, ics hates bbc iplayer doesnt like some of my hd games only thing thats working well is my fpse so i can play the ps1 games. i love the look of ics but it never wants to get on with me, plus only having this phone less than one day i want to give proper GB firmware a go just had trouble wprking out what one works well on a uk virgin network, think i have found a 2.3.4 that should work

Just check sammobile.com site for latest GB ROM released for your region and all should be fine.
Odoslané z GT-I9100 cez Tapatalk 2

is there any need to make a "repartion"?
is there any need, to make a "repartion"?

In this case no and in 99% of others neither, so don't touch it.
Odesláno z mého GT-I9100 pomocí Tapatalk 2

Why? Ics is so awsome
Gesendet von meinem GT-I9100 mit Tapatalk 2

Stileth said:
In this case no and in 99% of others neither, so don't touch it.
Odesláno z mého GT-I9100 pomocí Tapatalk 2
Click to expand...
Click to collapse
when is it recomended to repartition?

Related

[Q] [NEED] Three UK 2.3.3 ROM [NEED]

I installed the wobbish CM9 KING rom which lags to much and I lost my 2.3.3 UK THREE rom does anyone have it so I put it back on my phone and kies doesn't work because im on windows 8 developer preview.
This is so stupid over 150 views but no replys.
Just grab the 2.3.3 rom from sammobile.com - the advantage of using stock is that it is unlocked. 3 lock all of their phones, and I wouldn't be suprized if they were using CarrierIQ.
Sent from my GT-S5830 using xda premium
But three has an update I want 2.3.6
Dont think youll find it anywhere! I looked everywhere.
You have several options:-
1 - Install a CWM backup (if you made one - dont forget to format the filesystem back)
2 - Flash froyo and get kies to update.
3- flash directly 2.3.6 which can be found on sammobile.com there is virtually no difference in that and the 3 branded version. (the extra apps can be downloaded from market)
having spoken to 3 on numerous occasions they do tweak the firmware a little but dont lock it.
I was in the same position.. Three wont give out their rom so I told them to stuff themselves. I went and flashed 2.3.3 XEU and it works perfectly. No Three bloatware, I used to have a backup but deleted it because my CSC was stuck on FOP for no reason whatsoever.. Hope I helped. XEU really is the way to go For repairs I think you can still go to Samsung with it. P.s. Rickywyatts HTC style rom is based on 3's rom
Sent from my GT-S5830 using XDA App

Revert from ICS to GB

Hey there, I installed ICS 4.0.3 on to my S2 yesterday, after using it for a day, the battery drains way too fast, the music player keeps crashing, and other various apps keep crashing. I would like to revert to GB 2.3.6.
I used to have KK2, and im on LP8. I dont play around with ROMs so these are all stock ROMs.
Someone please guide me on what to do. I did a search but that didnt help me much
see my signature link for ODIN flash guide and stock roms
if not clear ask
theres a thread on ics discussion ull find better aswers there.
which version did ya flash ????i seen russian,polands,neterlands ics an it felt like an upgradation of gb ,well it needs time to settle wen u flash an i dint c any prblms....i always wipe an flash clean.
ZACQ8 said:
see my signature link for ODIN flash guide and stock roms
if not clear ask
Click to expand...
Click to collapse
I have odin and the stock roms.....which were given to me, i would just like to know the procedure, to go from ICS to GB as I think i need to wipe my phone and so on.
The file i currently have is GT-I9100_XSA_I9100XWKK2_I9100XSAKK1_I9100XXKI4.tar.md5
yup do a full factory reset and flash gb via odin **imp** jus for ur info the modem of ics remain afta flashin gb too,well i seen it all the time and i used to flash gb modem separately..
just make a factory reset from the phone menu,
and flash it form ODIN...
there are newer GB versions available than your choosen one...
I just hope you tried the newer ics stocks and wiped after flash and didn't restore anything. Ics working just fine on my brothers s2 for a month and I'm running stock just fine since yesterday
Sent from my GT-I9100 using Tapatalk 2
atifsh said:
I just hope you tried the newer ics stocks and wiped after flash and didn't restore anything. Ics working just fine on my brothers s2 for a month and I'm running stock just fine since yesterday
Sent from my GT-I9100 using Tapatalk 2
Click to expand...
Click to collapse
I upgraded to ICS via kies and did not wipe after upgrading....will wiping make the phone work any better, I am wanting to downgrade due to the battery life being VERY bad with ICS
m8 check pm***
Wipe will make day and night difference but you will lose your apps and data. And you should not restore your backups from GB to Ics
Dial *2767*3855# to wipe
Sent from my GT-I9100 using Tapatalk 2
Hey fellas, i'm looking to send my phone to Samsung for servicing, but obviously i cant let them see that i'm running ICS because it isnt out in Singapore yet.
so i've download DXLP7 in hope that i could flash my country's firmware before returning my phone.
Download both the kernel and the 7zip file that is 310mb in size.
opened the massive file to only find one tar file, so if i flash that via odin, my phone will completely return to stock?
as in a condition that the service centre wont suspect?
what about the kernel that i downloaded, do i have to flash that as well?
Much appreciate some help.
Regards,
Shawn.
shawnaye said:
Hey fellas, i'm looking to send my phone to Samsung for servicing, but obviously i cant let them see that i'm running ICS because it isnt out in Singapore yet.
so i've download DXLP7 in hope that i could flash my country's firmware before returning my phone.
Download both the kernel and the 7zip file that is 310mb in size.
opened the massive file to only find one tar file, so if i flash that via odin, my phone will completely return to stock?
as in a condition that the service centre wont suspect?
what about the kernel that i downloaded, do i have to flash that as well?
Much appreciate some help.
Regards,
Shawn.
Click to expand...
Click to collapse
Just the tar file and after that dial wipe code using dialer.
Sent from my GT-I9100
Look at the battery status wich app is draining your battery.
Yesterday i didnt use my phone for 2 hours, before my battery was around 50% but after the 2 hour my battery was only 18%. I looked at my battery report/status and it said:
Xda 29
Screen 27
And some things like
Bla bla 7
Bla bla 4
...
Mostly my screen haves around 60% so, now xda is the same value but the screen didnt use more or less energy so.........
Thanks to the xda app my battery drained 2x so hard.
I gues (how do you spell that?) you also use the xda app and it alsobis your problem.
Sent from my GT-I9100 using XDA
rocky23 said:
yup do a full factory reset and flash gb via odin **imp** jus for ur info the modem of ics remain afta flashin gb too,well i seen it all the time and i used to flash gb modem separately..
Click to expand...
Click to collapse
what about the bootloader.....is there no difference between ICS and GB bootloader.....
my net was down ,,,check pm
rocky23 said:
my net was down ,,,check pm
Click to expand...
Click to collapse
Mate, share your idias here instead of sending PM,
if your ideas are really good others can benifit, if anything wrong others can correct it...
Hello All,
I am a noob.
So I am looking into going back to GB 2.3.5
I have flashed stock ICS Netherlands XWLP7 and I have downloaded the firmware of my country.
Which is: GT-I9100_EGY_I9100JPKJ2_I9100OJPKJ1_I9100XXKI4.tar.md5
And kernal: Kernel_I9100JPKJ2.tar.md5
I have a question, it has been explained to me that I need to flash these files using odin+flashing a PIT file and using re-partition.
I could not find a PIT file? where do I get it from to go along with my firmware?
And, do I need to flash a Modem?
Is it possible for the kind soul thats going to answer my questions to put it in 1,2, 3 steps so I can understand what do to first?
I.E
1- Flash kernal
2- Flash firmware
or what?
Thanks a lot!
@ Sn3aks:
What is the reason you are downgrading to GB?
What is the condtion of your phone now?
Who advised you to use pit file?
---------- Post added at 10:02 AM ---------- Previous post was at 09:59 AM ----------
the firmware package you have mentioned already contains a kernel, no need of flashing kernel seperately..that is uploaded in the thread for future use when you needed to flash after rooting.
Thanks for your reply.
I am downgrading cause GB is more stable than ICS. Music player lags with some songs
Random crashes
I can not modify the in-call headset/handset volume from the servicemode. If you click Audio it doesnt come up with anything. And the in-call voice through earphones is really low
And other stuff that annoyed me and I couldnt remember.
The noticeable improvement in ICS is battery life and performance is fast
What is the condtion of your phone now?
My phone is ok, working fine, making calls, going over the internet normaly, IMEI is valid. Not rooted. Binary count = NO
Faryaab advised me to use a PIT file. I checked the guide in your signature and I read that anyone who asks about PIT file is a moron. Is this my case?
I dont think PIT file is required in your case,
You can try without using PIT first.
GT-I9100_EGY_I9100JPKJ2_I9100OJPKJ1_I9100XXKI4.tar.md 5
select above file from PDA of ODIN.
Do a factory reset before flashing...

[Q] Downgrading to gingerbread 2.3.6 from ICS 4.0.3

Hey guys
My S2 was preloaded with ICS 4.0.3 when i bought it. However i have noticed problem with many of the HD games, they run for sometime and crash...
My question is, how can i downgrade to gingerbead 2.3.6.?
I did find my region 2.3.6 firmware on sammobile..so if i follow the flashing steps from odin..the downgrade will be done successfully?
Also how safe is the process?
Also i would like to know how to take a back up my phone in the current state? So if something goes wrong or if i am not satisified with the downgrade, i can go back to ICS 4 i.e. the same condition my phone was when i unboxed it?
Some suggestions and answers would be really appreciated
Thanks
You cant backup your current rom without rooting it. here is a good vid on how to root a galaxy s2 http://galaxys2root.com/galaxy-s2-root/how-to-root-galaxy-s2-i9100-icsandroid-4-0/
You will need to back up your phone using clockwork recovery
You can however download the latest rom using Check Fus you can find it here http://fus.nanzen.se/ This should be safe. this video here will show you how to use odin to flash a stock kernel http://galaxys2root.com/galaxy-s2-unroot/how-to-unrootunbrick-your-galaxy-s2-i9100-ics/
you can always go back to ics if you do not like the GB stock rom
Hope this helps
-Ryan
aviral1990 said:
Hey guys
My S2 was preloaded with ICS 4.0.3 when i bought it. However i have noticed problem with many of the HD games, they run for sometime and crash...
My question is, how can i downgrade to gingerbead 2.3.6.?
I did find my region 2.3.6 firmware on sammobile..so if i follow the flashing steps from odin..the downgrade will be done successfully?
Also how safe is the process?
Also i would like to know how to take a back up my phone in the current state? So if something goes wrong or if i am not satisified with the downgrade, i can go back to ICS 4 i.e. the same condition my phone was when i unboxed it?
Some suggestions and answers would be really appreciated
Thanks
Click to expand...
Click to collapse
Yea flashing through Odin is safe. Just don't mess with the repartition box or pit files unless you are 100% sure what you're doing. And if you're stock you can backup your device through Kies.
Sent from my GT-P7510 using xda premium

Re-flash stock firmware

hello everyone.
I'm using andyx firmware v15 and taking my attention that battery dies too fast and phone feels lagging at times.
So i want to go back to the stock firmware and use a rooted stock firmware. but i have a couple of questions:
1) i dont really know which pda or country's firmware i have to use.bought my phone from poland and living in turkey now. can i find out which version the phone originally came with from the box or anywhere else?
if using any firmware wont matter, is there any particular one i should use? maybe getting the newest updates before the ones?
2) is the version 4.0.4 safe to use? my friend suggested me to use that one but i'm a little pissed off after reading the brick stories about it.
3) also someone else told me to flash stock firmware then go for the siyah kernel. whats the benefit for that?
burning_afd said:
hello everyone.
I'm using andyx firmware v15 and taking my attention that battery dies too fast and phone feels lagging at times.
So i want to go back to the stock firmware and use a rooted stock firmware. but i have a couple of questions:
1) i dont really know which pda or country's firmware i have to use.bought my phone from poland and living in turkey now. can i find out which version the phone originally came with from the box or anywhere else?
if using any firmware wont matter, is there any particular one i should use? maybe getting the newest updates before the ones?
2) is the version 4.0.4 safe to use? my friend suggested me to use that one but i'm a little pissed off after reading the brick stories about it.
3) also someone else told me to flash stock firmware then go for the siyah kernel. whats the benefit for that?
Click to expand...
Click to collapse
1) there are no particular firmwares. Try out different firmwares on whatever suits you best. I suggest you go up for Gingerbread because of its stability and battery life. But if you want to be updated on the trending things, go for ICS.
2) i suggest you go for custom roms with 4.0.4 as a basis.
3) siyah kernel MAY be a suitable kernel for you, but then again, it could be different. Try out different kernels that best suits you
-Try the search button for further info so you could get a variety of comments from users. Happy flashing
Sent from my GT-I9100 using xda premium
saywhatt said:
1) there are no particular firmwares. Try out different firmwares on whatever suits you best. I suggest you go up for Gingerbread because of its stability and battery life. But if you want to be updated on the trending things, go for ICS.
2) i suggest you go for custom roms with 4.0.4 as a basis.
3) siyah kernel MAY be a suitable kernel for you, but then again, it could be different. Try out different kernels that best suits you
-Try the search button for further info so you could get a variety of comments from users. Happy flashing
Sent from my GT-I9100 using xda premium
Click to expand...
Click to collapse
thanks
but i think i couldnt explain the first question. what i'm asking is which country's firmware should i install for my phone?
turkish, poland or another country's?
burning_afd said:
hello everyone.
I'm using andyx firmware v15 and taking my attention that battery dies too fast and phone feels lagging at times.
So i want to go back to the stock firmware and use a rooted stock firmware. but i have a couple of questions:
1) i dont really know which pda or country's firmware i have to use.bought my phone from poland and living in turkey now. can i find out which version the phone originally came with from the box or anywhere else?
if using any firmware wont matter, is there any particular one i should use? maybe getting the newest updates before the ones?
2) is the version 4.0.4 safe to use? my friend suggested me to use that one but i'm a little pissed off after reading the brick stories about it.
3) also someone else told me to flash stock firmware then go for the siyah kernel. whats the benefit for that?
Click to expand...
Click to collapse
Use CheckFus to find the latest firmware for your phone and flash it with ODIN.
To root your phone just do some reading. There are quite a few methods described here, some are easy, some are more complicated. In the end choose one that corresponds to your needs and skills.
Ive just done what you were asking for similar reasons. I went on to samfirmware site and picked latest and safest ROM. Then on to chainfires thread for the insecure kernel to root my S2. (thanks to chainfire) No a difficult task just read before flasing and make necessary back ups. All tbe best.
Sent from my GT-I9100 using xda app-developers app

[Q] Bootloop on pure Stock

Hey guys,
I know you guys probably think oh god not another boot loop thread, but i couldn't find someone with the same problem as this one. I don't own a s2 myself but my friend does and he doesnt understand a thing about android. He has never updated his phone, it's not rooted or unlocked or anything. But a few days ago the phone randomly shut down and went into a bootloop. I tried to wipe his cache via the recovery menu but that didn't work. Then i did a factory reset and that sort of worked, the phone worked again but yesterday it did the same thing. he likes the phone the way it is so he'd rather not update it.
Does anybody know what could cause this bootloop and what he can do to fix it? If he has to update is there a safe way to update but stay on gingerbread? I myself own a Xperia Arc, i know that flashing roms through flashtool is pretty safe, is there anything like that for the S2?
thx in advance
(system information)
You would use Odin instead of flashtool.You can get the rom from sammobile.
First check he can get into download mode.....
Sent from my GT-I9100 using xda premium
theunderling said:
You would use Odin instead of flashtool.You can get the rom from sammobile if you need it.
You could maybe get him on ICS 4.0.3 and even root the phone for him.
Sent from my GT-I9100 using xda premium
Click to expand...
Click to collapse
ah oke thx, waht thread would you refer me to for a quick odin guide? and doesn't gingerbread have better battery life on the S2? Some of my other friends are running ics on the s2 but they are having a horrible batterylife compared to my phone while the arc has a smaller battery.
spromper said:
ah oke thx, waht thread would you refer me to for a quick odin guide? and doesn't gingerbread have better battery life on the S2? Some of my other friends are running ics on the s2 but they are having a horrible batterylife compared to my phone while the arc has a smaller battery.
Click to expand...
Click to collapse
Poor battery is only on pure stock ICS (rooted or not).

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