Step by Step Guide
Power on Samsung Galaxy S2.
Connect USB cable to your phone.
Download the correct CF-Root CF Root here.
At PC, use 7-Zip to extract zImage (zip – tar – zImage) then copy it to sdcard.
Download the correct stock kernel Stock Kernelhere.
Extract stock kernel .tar file that you downloaded to Kernel folder.
Remove USB cable from your phone.
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.
Bring up Odin3.
Click on PDA.
Select the .tar at Kernel folder.
Click Start then.
Remove USB cable from your phone when you see green PASS! at Odin3.
After Android loaded, bring up CWM Manager.
Select Flash kernel ~ Flash a kernel.
Select zImage then click Flash.
That’s all.

In short, you need to have stock kernel of the firmware that you are using. Flash it with Odin after you rooted SGS2. The stock kernel will remove the yellow triangle. Then re-flash kernel from CF-Root using CWM Manager. This will bring back ClockworkMod Recovery.

Note – You need a CF-Root that matches your Samsung Galaxy S2 kernel version. And stock kernel that matches your firmware.

(Source from copy paste)

This post has been edited by duckness: Sep 15 2011, 04:21 PM

There's always ICS to wait for. But yeah, after the initial surge of ROMs and tweaks, it has slowed down a bit.

But really, I'm enjoying USING the SGS2 as much as I'm enjoying tweaking it, so it's not really a problem.

Besides, I'm a hardcore VR loyalist. That should show how much I'm not a serial flasher - VR has been on a KG6 base for quite a while now, plus I even held back from going up to the latest 2.4.2 for a month or so after it was released (stuck to VR2.0 for quite a while).

Plus, aerobahn's hold vol to change tracks (now updated to work with power menu) made me plenty happy already this month.

I came from HD2 as well. True SGS2 got nothing new. No new base rom, CM7 and MIUI is still incomplete so nothing much to do. HD2 was fun cos it is not native android so development took time with new rom better improvement. SGS2 is already android running 2.3.3 / 2.3.4. There really is nothing much to improve on until icecreamsandwich is released for phone. Can't really blame SGS2. Blame google.

i tried everything. i didnt like MIUI, despite all themes it have, cuz i like android pure experience more. CM7 is my all time favourite since day 1 i owned Desire on August last year. sticking to TW rom for now cuz of some features i need.

Sensation is great, but Evo 3D is better! though i still love my SGS2 cuz of its slim profile. and for me SGS2 is a dual core revolution phone so thats why i buy it.

Yeap HTC device is so OMG. i bought SGS2 cuz it was originally unlocked too.

btw uploading my video review of SGP case. haha...

haha thats partly true only, there are loads to do! CM7 is epic and still in nightly builds MIUI is still imcomplete. and we havent even get our second core unlocked!

not complaining just worried cause yes, the phone is awesome the way it is, but still, more customization n improvements are what android is all about

Yeah I am still waiting for a stable CM7. Was on hyperdroid for a long time. But i seem to like TW cos its very smooth. I agree there will still be improvement, tweaks etc. but just dun expect it to be on the scale of HD2. HD2 android development started from nothing, SGS2 started from the top.

This post has been edited by antt00: Sep 15 2011, 04:30 PM

haha yeah but still sgs2 is way much better than sensation hardware wise. desire hd is doing pretty well too haha

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Added on September 15, 2011, 4:30 pmcoming from hd2, the only thing i miss is sense haha

This post has been edited by syklspurs: Sep 15 2011, 04:30 PM

as a sgs2 user, of course i agree. browsing and internet i feel Sensation faster though. watched a review for both, and tested my cousin's Sensation and it seems true.

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Added on September 15, 2011, 4:34 pmSense it great! never got bored. TW is so iphonish. i cant stand horizontal scrolling~~ using the stock android launcher ftw!!

This post has been edited by LuffyPSP: Sep 15 2011, 04:34 PM

well, we'll see how the dev is after the device is matured in US

You just want to root your KH2 right? So now you have rooted with ChainFire KH3. So just flash back KH2 kernel. Look in this thread for the kernel. http://forum.xda-developers.com/showthread.php?t=1075278

You will end up with no yellow triangle and rooted KH2 rom

Someone in XDA is porting sense 3.0 now, don't know is the progress. Have you check out?

I think its still under development for developers only.

THIS.

And also HTC got lazy and used the HD2 as a base for all sorts of other phones, which meant easier cross ports. That's why we have Android AND WP7 running on it.

Plus, we can ALWAYS run en masse to the Nexus (or Galaxy or Droid or whatever) Prime when (and if it ever) comes out, and if it's really the next Google flagship. Dev should be rockin' from the start.

Although by that time we might have a great dev ecosystem going on for the SGS2 already, rite?

up to now, boot wif a "beep", then dead. wait for mayb one decade more la. though i'm anticipating it very much

i dont keep my hopes up. i've seen this kind of development in other section and it died without any news. the only thing capable of anything is HD2.

well i certainly hope so for our sake haha

Sense 3.0 will take time cos its new but i think eventually it will get there cos SGS2 got a very big userbase and developers on XDA.

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Added on September 15, 2011, 4:42 pm@Eiraku You lost your IMEI info recently is it due to the Battery Calibration app? Cos someone on XDA mention similar situation.

This post has been edited by antt00: Sep 15 2011, 04:42 PM

yup hopefully.

and SGS2 is too boring in development cuz it started from top as said above, which is we are too powerful to have anything else except some minor mods added.

i didnt mean to have ports and such like in Desire and HD2, just that in SGS2, its not too busy yet. the usual dev in Desire that have frequent updates for their roms is flamed by Ninpo and some other mods, and leaving the dev section. like Adam and Neo

This post has been edited by LuffyPSP: Sep 15 2011, 04:44 PM

We're on the right ship

Newbie question again: just got my new micro sd, where can I find it in Astro
Should I format or do anything before using it?
Thanks

Ragemod v1.1b is out and he fixed the init.d function for those that are using his kernel.

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Added on September 15, 2011, 4:55 pmexternal SD is under /sdcard/external_sd

This post has been edited by antt00: Sep 15 2011, 04:56 PM