ClockworkMod (CWM) Recovery Mode allows you to install custom firmware via zip format in SD card. Besides, CWM also provides backup and restore functions in Nandroid. And other advanced functions too. ClockworkMod Recovery is a must install component because lot of the custom firmware are developed to be flashed via CWM. How to install ClockworkMod Recovery on Samsung Galaxy S II? Personally, I installed CWM through CF-Root. Besides getting CWM installed, I also have Samsung Galaxy S2 rooted. Isn’t that great?
Prerequisites
- Odin3
- CF-Root
Note – You need a CF-Root that matches your Samsung Galaxy S2 kernel version. Then use Odin3 to install it.
Step by Step Guide
- Go to Settings.
- Click on About phone.
- Find out your Samsung Galaxy S2 kernel version.
- Download the correct CF-Root here.
- Then power off your phone.
- Press and hold down Volume Down + Home + Power buttons at the same time.
- Press Volume Up button when warning prompt.
- Odin download mode will be loaded.
- Connect USB cable to your phone.
- At PC, extract CF-Root .tar file that you downloaded to CF-Root folder.
- Then bring up Odin3.
- Click on PDA.
- Select the .tar at CF-Root folder.
- Click Start then.
- Remove USB cable from your phone when you see green PASS! at Odin3.
- After Android loaded, you should see CWM Manager and Superuser installed.
- That’s all and enjoys ClockworkMod Recovery.
Check out this post to learn more about Samsung Galaxy S2 ClockworkMod Recovery Mode.
Download Odin3 v1.85 here.
Download CF-Root here.
Tags: CF-Root, ClockworkMod Recovery, CWM, Odin3, root, Samsung Galaxy S II
[...] In order to install firmware in CWM zip format, you need to have ClockworkMod Recovery on Samsung Galaxy S2 first. Follow this guide to install CWM ~ How to install ClockworkMod Recovery on Samsung Galaxy S2? [...]
when i try to boot in to CWM, my SGS2 show can’t access to ‘ system csc xme system ‘. Any suggestion?
Which firmware are you using? Or what did you install until you got this error?
i also having a same problem. i’m using 2.3.4 XXKG5 kernel 2.6.35.7-I9100XXKG5-CL420550 se.infra@SEP-41 #2
Hmm… I did not face this issue when I use XXKG5. Maybe I have CF-Root installed. Did you install CF-Root for KG5?
Jayce, quick question, I followed your guide but now I want to use Rom Manager (which isn’t compatible with CF-Root) – Can I simply just overwrite the cf-root kernel with the standard Clockworkmod one?
I did not test ROM Manager as I don’t us it. Anyway, make a CWM backup first. Then install the kernel that you want. Just restore back if anything bad happens.
Jayce, i want your help..after install CWM all ok. But when reboot the “caution warn” yellow one appear.what does it mean.How to remove that one. Thanks
No worry, yellow triangle comes out after installed custom firmware / kernel. This is normal. Follow this guide to remove it – http://www.jayceooi.com/2011/08/10/how-to-remove-yellow-triangle-on-samsung-galaxy-s2-without-usb-jig-video/
thanks Jayce…triangle already gone…
Jayce..
My Odin din’t showed ID:COM
my pc cant find gajet driver
Did you have Samsung Kies installed on your PC?
nop..where can i get Kies for PC?
http://www.jayceooi.com/2011/07/17/download-samsung-kies-2-0-pc-sync-for-windows-mac/
Hi Jayce,
after install cf-root,there is a warning symbol appears..always when i restart my device..why?
my kernel DXKI2..i use ce_xen_ki2..is there were i miss something?
No worry, this is normal when you install custom kernel / firmware. http://www.jayceooi.com/2011/08/10/how-to-remove-yellow-triangle-on-samsung-galaxy-s2-without-usb-jig-video/
Hi, i have already rooted my galaxy s2 by another way …. not CF-root..
how can i install CWM now ????
You can try this method if you want.
lol how can i root if am already rooted
Im in the same scenario as Jimmy, rooted using s2 root. I’m guessing the solution would be to unroot your phone using s2 root, then re root using CF root, (you’ll need to reload an insecure kernel on both rooting and unrooting).
An alternative method is to simply flash an older kernel one with the 2e recovery, as the 3e recovery has signature issues with CWM. After the CWM should install fine, via ROM Manager.
Cant download Odin3 ((((((((((((((
Can i remove the yellow triagle that appears on boot?Or it’s not possible?
Sure, http://www.jayceooi.com/2011/08/10/how-to-remove-yellow-triangle-on-samsung-galaxy-s2-without-usb-jig-video/
Thanks a lot!!!
hi,
My phone kernel now is 2.6.35.77 se.infra@SEI-22 #2.
i done the root follow your link.my GS2 is i9100G..
can i install cynogenmod and what is the suitable CF for me
I9100G does not CF-Root kernel. And can’t use CM7 ROM.
oh..ok…so can i still install cynogenmod…sorry ..i still new in anroid…
I9100G does not have much custom ROM now. So no CyanogenMod 7 ROM too.
thanks Jayce
i installed the zedomax_kernel i look at my kernel and it is untouched it says 2.6.35.7. I tried ti create a back up using Rom Manager and it gives me something about e whole file signature and verification failed
Hi, nice guide you got right there! I’ve got a couple of questions to ask. If I root, will my photo data , apps, etc be erased? Another thing, am I able to flash roms like cyanogenmod 7 if I am rooted? Looking forward to ur reply.
Rooting does not delete your data. But no harm to backup them first. You need CWM to install CM7 ROM. Rooting does not help here.
But this guide is the explanation of rooting and the installation of clockworkmod recovery so after I performed all this steps, I will be able to run roms like cyanogenmod7 right?
Yes, with CWM.
Ok. TKs!
thanks jayce superb tutorial!!!
hello jayce,i just flashed to checkrom revohd v4 but i hate the cwm.can i install cwm 4 while having the current cwm?and how do it do it?i want to replace it.tnx btw
You can only have 1 version of CWM.
when i look to ur android in this video is 2.3.3? but mine is 2.3.6..it is still the same to install CWM?
Yes, using CF-Root kernel that match to your kernel.
oh man, I have reinstalled kies and samsung usb drivers over and over, but still my phone isn’t recognized by every OS and with every usb cable…
I messed up my firmware upgrade (ODIN said FAIL!) And after that i can’t do anything via USB.
Is there a way to install new firmware not using USB connection???
Yes, with CWM 5. But you need USB to install it first. Maybe you can try on other PC see. By the way, can you still able to load Odin Download mode now?
Hi,
Tried 4 computers and 2 usb cables, none of them recognizes my phone. I can get in Download mode in my phone, but in Odin, the COM:ID won’t turn yellow (because no usb connection)…
Sorry to hear that. I think you need to get in touch with Samsung Support to fix it.
Ok I will,
Thanks anyway!!
hy bro! i have o2 pay go set.yesterday i rooted+cwm with ur method.then i flshed official firmware 2.3.5 to remove o2 logo.now my cell have unrooted and cwm has also been uninstalled.but i want to instal custom rom ics nw.what should i do?
Depend on which type of ICS ROM that you install. Some use Odin software to install (no need CWM). Some need CWM so you need reinstall it.
hi guys
i rooted S2 by this guide inspiredgeek.com/2011/04/30/how-to-root-samsung-galaxy-sii-s2-using-odin-and-s2 roor-step-by-step-guide/
it worked fine,
downloaded ROM manager app, flash clockworkmod recovery, selected S2, successfully downloaded clockworkmod recovery. then reboot to recovery via CWM app.
went to the recovery with menu
——————————-
android system recovery
reboot system now
apply update from sdcard
wipe data/factory reset
wipe cache partition
————————
with message sayings
E:failed to verify whole file signature
E: Signature verification failed
i want to install custom rom
i have no idea why it wouldnt work on S2
any help would be brilliant thanks
one more thing i have install both insecure kernel and original kernel to remove yellow mark from my mobile…now can i install CWM if yes send link ,,,,,thanks in advance
Do you still have CWM Manager app?
yes i have rom maneger premium but not clockworkmod recovery work..can i install it on my mobile or not..is there any risk
i rooted S2-using-odin-and-s2 root-step-by-step-guide/
it worked fine,
downloaded ROM manager app, flash clockworkmod recovery, selected S2, successfully downloaded clockworkmod recovery. then reboot to recovery via CWM app.
went to the recovery with menu
——————————-
android system recovery
reboot system now
apply update from sdcard
wipe data/factory reset
wipe cache partition
————————
with message sayings
E:failed to verify whole file signature
E: Signature verification failed
i want to install custom rom
I don’t use ROM Manager. No idea. You can install CF-Root kernel which will install CWM for you.
im already rooted can i root again with CF-ROOT
You still have root access after install stock kernel?
yes i still have root access. coz i have superuser icon in my app drawer and and other root apps its work correctly can i root again
i dont know whats the different between stock kernel and original kernel i use original kernel to remove yellow mark after rooting plz give idea….stock kernel and original kernel is same….
Hmm… I have no try to root with CF-Root on phone with root access. Not sure it work or not.
Just a question ‘outside’ the topic discussed here.
Is that a blinking notification light near the secondary camera during the boot animation??
as far as I know, there is no notification light in a gs2.
That’s proximity sensor.