Unable to install custom recovery on i777

[Bklynrx7]

Hello everyone,

I recently picked up a couple GS2's for dirt cheap just to mess around with. I am having a very hard time getting any custom recovery installed on them and I was wondering if there is a trick to it that I am not seeing. I've tried flashing various CWM modified kernels using odin with no luck. They flash successfully but still boot to 3e when I boot into recovery. I tried flashing a modified update.zip from the CM website and it fails with the error "failed to verify whole-file signature". Most recently I did a complete restore using odin with a rooted image, then used Rom manager to install CWM. Rom managed says it is successful, but when I reboot into recovery it launches 3e and attempts to do something that returns the same error "failed to verify whole-file signature". Any input of suggestions would be appreciated.

 

[creepyncrawly]

Hello everyone,

I recently picked up a couple GS2's for dirt cheap just to mess around with. I am having a very hard time getting any custom recovery installed on them and I was wondering if there is a trick to it that I am not seeing.

The recovery is compiled into the kernel on this phone, but it seems that you understand that already. The kernel and system must match. You probably need to be rooted. You have not given any specifics about the firmware, what is already installed, what specific item you are trying to install, etc.

I've tried flashing various CWM modified kernels using odin with no luck. They flash successfully but still boot to 3e when I boot into recovery.

This does not actually seem logical. I'm wondering if you are not mentioning something that I would need to know to determine why you are getting this result. If you install a custom kernel containing a custom recovery, you should then be able to boot into the custom recovery. If you still have 3e recovery, it indicates that you still have the stock kernel installed.

I tried flashing a modified update.zip from the CM website and it fails with the error "failed to verify whole-file signature".

I would not expect that to be successful. Among other things, it is probably not specific for the I777.

Most recently I did a complete restore using odin with a rooted image, then used Rom manager to install CWM. Rom managed says it is successful, but when I reboot into recovery it launches 3e and attempts to do something that returns the same error "failed to verify whole-file signature". Any input of suggestions would be appreciated.

Do not use Rom manager. It does not work with the I777, and can cause unrecoverable damage in some cases. There is a sticky post about it here in the forums.

You can find various resources in the Download Repository. See the link in my signature.

Here's what I would do:

Flash the latest stock Jellybean firmware, UCMD8, from the Repository.

Root using Framaroot with the Aragorn exploit.

Flash the AJK v4.9 NoSwap kernel using Mobile Odin Pro or Mobile Odin Lite. You have to extract the boot.img from the kernel zip and flash that, but don't let it boot into system. Instead, you can boot directly into CWM and flash the AJK v 4.9 NoSwap kernel zip, or if you prefer, you can flash some other custom firmware at this point.

 

[Bklynrx7]

The recovery is compiled into the kernel on this phone, but it seems that you understand that already. The kernel and system must match. You probably need to be rooted. You have not given any specifics about the firmware, what is already installed, what specific item you are trying to install, etc.



This does not actually seem logical. I'm wondering if you are not mentioning something that I would need to know to determine why you are getting this result. If you install a custom kernel containing a custom recovery, you should then be able to boot into the custom recovery. If you still have 3e recovery, it indicates that you still have the stock kernel installed.



I would not expect that to be successful. Among other things, it is probably not specific for the I777.



Do not use Rom manager. It does not work with the I777, and can cause unrecoverable damage in some cases. There is a sticky post about it here in the forums.

You can find various resources in the Download Repository. See the link in my signature.

Here's what I would do:

Flash the latest stock Jellybean firmware, UCMD8, from the Repository.

Root using Framaroot with the Aragorn exploit.

Flash the AJK v4.9 NoSwap kernel using Mobile Odin Pro or Mobile Odin Lite. You have to extract the boot.img from the kernel zip and flash that, but don't let it boot into system. Instead, you can boot directly into CWM and flash the AJK v 4.9 NoSwap kernel zip, or if you prefer, you can flash some other custom firmware at this point.

Sorry if I want clear. The phones are currently on 2.3.6. I tried using framaroot but it was not successful. The app said it was successful, but there was no supersu after I rebooted. I successfully got the phone rooted using one of the one-click odin flashers posted on these forums that are said to return it to factory + root. I then tried to use rom manager which said it was successful, but wasn't. That makes sense now that you're telling me its not compatible. Ill try upgrading to the JB firmware first, then ill try framaroot. Thanks for the suggestion

 

[Bklynrx7]

I just wanted to update the thread and say that this worked. Thanks again. I'm having an issue getting Gapps flashed but that's another topic. My big concern was that the phones wouldn't charge without boot looping because they had the wrong battery installed. The Stock Jellybean with the kernel you suggested fixed that.

 

[azeem40]

I just wanted to update the thread and say that this worked. Thanks again. I'm having an issue getting Gapps flashed but that's another topic. My big concern was that the phones wouldn't charge without boot looping because they had the wrong battery installed. The Stock Jellybean with the kernel you suggested fixed that.

Maybe I could help. What error does it give when you flash gapps?