CyanogenMod is no doubt one of the best custom ROM for any Android device. I was waiting for a stable release from CyanogenMod for Galaxy S2. Latest stable version of CyanogenMod 7.1 is having Android 2.3.7 Gingerbread with lots of tweaks and improvements. Here is the complete guide on how to download & Install CyanogenMod 7.1 on your Galaxy S2.
** Please note that CyanogenMod 7.1 is a Custom ROM and it will void the warranty of your handset. Install at your own Risk **
Prerequisite
- Rooted Samsung Galaxy SII device. Check How to root your i9100 device rooting guide here
- ClockworkMod Recovery which will be there on your rooted device
- Download the latest Stable build of CyanogenMod 7.1 for the Samsung Galaxy S2 (SII) from CyanogenMod website.
Procedure
- Place the update-cm-7.1.0-GalaxyS2-signed.zip file on the root of the SD card.
- Boot into the ClockworkMod Recovery.
- Once the device boots into the ClockworkMod Recovery, use the side volume buttons to move around, and either the power button or the trackball to select.
- Select the option to Wipe data/factory reset.
- Then select the option to Wipe cache partition.
- Select Install zip from sdcard.
- Select Choose zip from sdcard.
- Select the update-cm-7.1.0-GalaxyS2-signed.zip file.
- Once the installation has finished, select Go Back to get back to the main menu, and select the Reboot system now option.
The Samsung Galaxy S II should now boot into CyanogenMod.
** Installing a Custom firmware is a very risky procedure.. Do it at your own RISK.. **
We have given this procedure on request from readers. However if you are not a very expert user of phone, We will not suggest installing a CustomROM.
Source - CyanogenMod Wiki page
No samsung Kies Air support
ReplyDeleteNO GPS + maps
NO LOCATION AND TRACKING
NO GOOGLE voice search
NO Social Hub to add more account like facebook to sync with contacts
don't work!!!!!!!!!!!!!
ReplyDelete@Ephram
ReplyDeleteyes there will be no Google Apps... However you can download them and install
@MEGA
ReplyDeleteI am aware of reboot loop problem while installing the cynogenmod but that is how it is..
I always say on Galaxy S2 you really dont need a custom firmware until you need a very high customizable phone and you are a advanced user
so how to solve it? the reboot sequence nonstop for me
ReplyDeletei tried the way u described but after the whole process my phone just dont boot...what should i do ?
ReplyDelete@romee
ReplyDeletei know that is the prob with custom roms... dont get panic . first try to go clockmod recovery by vol up+ home+ powet button and restore ur firmware... if it doesnt work just visit ki3installation page and follow the procedure to get official firmware back.
ROMEE IS A KNOWN BUG YOU HAVE TO flash twice in order to fix the rom on the galaxy s2 the first time you do it. Obviously wipe data + cache and do a factory reset of your device(do a nandroid backup first) then wipe cache. after this install google apps and then reboot twice. after this FIX PERMISSIONS AND YOUR GOOD TO GO, its impossible that doesnt work fine this way.
ReplyDeletei too face the reboot loop problem... for a successful flash you need to make sure that you wipe data and cache ..then flash twice.. to not reboot before you have flashed twice...
ReplyDeleteDid the twice flashing. Encountered bootloop.
ReplyDeleteheard i need to force install CWM for ROMManager to work in using it to install CM :S
thanx guys....really thanx for the help.. now my phn is ok :D
ReplyDeleteThis comment has been removed by the author.
ReplyDeleteI have root my telephone and overclock to 1.400Ghz is work fantastic in 2.3.3 but my cuestion is? Do i need to upgrade ? Do I miss some greates factures is the lates firewire? I wish answers thank you guys
ReplyDeleteCan i dwload that upgrade in my xxkE7 version?
ReplyDeleteno proxy setting option wlan ? plz do something !
ReplyDeleteapplications dont work on proxy wlan !
ReplyDeleteThe best ROM for ur rooted device rite now is CheckRom revolution 1.0
ReplyDeleteget it from xda..
i moved from the so called stable version of CM7 to this rom a week back and im so happy with its performance.. no reboots or FC's and a decent battery life of 16hrs ..
-Ajay
please, does this version support Arabic language?
ReplyDelete.
.
please answer me....... thanks
yes it support Arabic do it it's wonderfull !!
ReplyDeletephones not getting started!!!!! plz reply quickly !!!!!!
ReplyDeleteunable to install it
ReplyDelete@devesh
ReplyDeleteIf you are unable to install you can anyways install official firmware again..
Just browse through Dialandroid for required firmware
i want to install cyanogenmod 7.1 but after doing everything like u said ! my phone got stuck at the start onli like when the phone shows samsung galaxy s2 gt-i9100 n stuck !no progress after that !
ReplyDelete@devesh
ReplyDeleteits nothing but reboot loop...u need to reinstall.
i tried 2 times hw many times should i try ?
ReplyDelete@devesh
ReplyDeleteits a custom fw... i never preferred it.
Can now anyone say real way install cyanogen mod on sgs 2??
ReplyDeletecan i go back to the original android 2.3.3 ????
ReplyDelete@Anonymous
ReplyDeleteyes you can go back to any firmware... Just download it and install.. You can refer DialAndroid posts for the same
after rooting can i go back to the official android 2.3.3 ????????? and will my phone be detected by kies ???/
ReplyDelete@devesh
ReplyDeleteyes u can go back to official firmware..
Phone wil be detected by kies but you will not be able to update firmware using kies
AFTER FOLLWING the above procedure my cell does not boot in to cynogenmod plz help :) thanks in Advance
ReplyDelete@Anonymous
ReplyDeletewhat is the error... is it re booting again and again
I Tried this procedure 2 times, in the first time my phone was stoped on screen with a exclamation, on the second time I was made the same procedure but my phone works normally now.
ReplyDeleteall went well but i am unable to use the camera and it even takes time to load pics in gallery !!! help
ReplyDelete@devesh
ReplyDeleteIts a custom firmware and never expect any support from anyone... The only thing i can help you with is the camera interface on cynogenmod is totally different from Samsung firmware. Please explore little
can u give me the link of sum other custom rom ! which is gud n has no problemz !!! plz !!!
ReplyDeleteI installed a nightly build (111) from CM7 community... GS2... works like a charm however I can't get Gmail/Market to start. Rest, this one is the best.
ReplyDeleteIs is suitable rom for Uk version ...?
ReplyDeletei hav CF rooted s2 having .3 firmware now...
@anonymous
ReplyDeleteyes you can install
after installing cyanogenmod 7 to my galaxy s2, it wont boot and the samsung galaxy logo keeps on flashing instead? i need help asp pls.
ReplyDeleteThats called bootloop.. Have you done wipe properly... If not try all steps again
Deleteyes i did. infact it was rebooted but after that the samsung screen just keep on flashing.
ReplyDeletecwm won't work. when i press up volume, home key and power, it wont work, the samsung galaxy s2 logo just appear and keep on flashing.
pls. help me
Dont worry nothing will happen to phone .. :)
DeleteInstall stock ROM again.. and then CM7... Check for KI3 on Dialandroid..
is it kernel_zski3.tar? i tried it in odin3 it pass but the screen is just the same, keep flashing the samsung logo :(
ReplyDeletehttp://www.dialandroid.com/2011/09/install-android-235-i9100xxki3-on.html
Deletei mean kernel_I9100ZSKI3?
ReplyDeletesir i am worried, i don't what to do. the download of 19100XXKI3 is too slow.
ReplyDeleteDont worry... it may be slow... but nothing will happen.. have patience.
Deletei can now go to CWM, do i have to repeat the same step in installing CM7?
ReplyDeleteyes... do a proper wipe
Deletecan you please tell me how should be the proper swipe? i follow all the instruction but it stocked up.
ReplyDeleteE:Error in / sdcard/external_sd/update-cm-7.1.0-galaxys2-signed.zip
ReplyDeleteinstallation aborted
thats what it says.
Please install stock ROM again and then so the CM process... But my suggestion try KPA ICS rom ... i am using it .. nice
Deletepls tell me how to install stock rom?
ReplyDeleteIt runs perfectly!!!! Finally I've found a stable cyanogen mod7 rom, thank you so much.
ReplyDeleteI have to tell something you those of you who have troubles, you have to wipe cache and factory reset, and install the rom for two times, my first instal doesn't work, but them I try a second one and it runs!!!!
after i overclock my galaxy s2, it bootloops and this happened when i enter to recovery mode.
ReplyDeleteCan u please help me? after i overclock my galaxy s2, it bootloop and cant restart it.when i go to recovery mode it says
E:Can't mount / cache / recovery /log
E:Failed to mount /cache (no such file or directory)
E:Failed to mount / efs (no such file or directory)
Please help me.
Are you able to goto ODIN download mode?
Deletedo this rom suport swedish language???
ReplyDeletei was success to flashing this, but my android market didnt work ??would you help me please..
ReplyDeletejust google the market APK file and install it manually
Deletecan i just flash it using odin ?
ReplyDeleteHow do I flash anything if the phone is stuck in reboot loop?
ReplyDelete@ lappies
Deleteif your phone is in bootloop then you can remove the battery and again goto download mode by vol down+home+power and flash any firmware using ODIN..
Why dont you try MIUI... its good
Can someone please help me here? I have installed my old stock ROM but really want to try out CyanogenMod. What should I do before starting with the procedure as described above? I have tried the 7.1 stable version as well as the nightly build (111 & 116) from CM7 community but with all I get the reboot loop error and then I have to use Odin to flash CWM again or my stock ROM. Thanks in advance
ReplyDeleteHello, as everyone here I got the reboot loop after trying to install CyanogenMod 7 on my SGS2 during all the weekend.
ReplyDeleteThe solution exists, read carefully this topic:
http://forum.cyanogenmod.com/topic/38096-boot-loop-sollution/
In my case I put the cm_galaxys2_full-116.zip then I reboot into clockWorkMod to install the update-cm-7.2.0-RC1-galaxys2-signed.zip
Again, I had the reboot loop, but no worries, because with the following it was possible to boot CyanogenMod 7.2
To resume it quick, (but please read the page on the link as well)
Once in the reboot loop, you are at the step 7.
[...]
8.: dl the latest syah kernel from here: http://forum.xda-dev...d.php?t=1263838 But carefull not the Siyah-v3.x, it's for ICS, USE Siyah-v2.6.x for CM7
pick the tar version, we gonna hit Odin one more time.
9.: boot into dl mode (vol down, home and power), start Odin and load the syah kernel file to the pda field. Hit start and wait for the phone to start up.
And voila! Your phone should boot into CM ok!
does baseband version affects this installation of this rom coz my firmware is xwkl1 but baseband is xxlpr i had installed ics rom earlier nw on stock rom
ReplyDeleteIt should not effect but still i will prefer to have stock GB then try it
Delete