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Root i dont have operating system anymore please help

You should have never done that. That backup is there so when you do something to your device and it screws it up then you have the ability to fix your device by restoring it with your backup. Wiping your backup literally makes no sense lol.

Anyways, I cannot provide you with an RUU because you are S-On and on Jelly Bean. The RUU is for ICS which requires you to downgrade the HBoot which can only be done if you are S-Off. As of now, this is really the only thing I could find available for the K2_UL. Its a Rom. Place it on to the root of your external sdcard.

K2_ul (LTE): k2ul_JB_2.14.401.6_stock_odexed_03_06_13.zip - Mirror
Md5 Sum: 5C3BDDBAD1690794925284AA2E11150B




How to install:

First of all:

Download the zip file.

Wipe/format data/system/cache/dalvik cache, factory reset.

Flash the zip through custom recovery.

Htcdev.com unlocked users who are not S-Off have to extract the boot.img from the zip file and flash it afterwards over fastboot via PC with the command:
Code:
fastboot flash boot boot.img

Then reboot your device.
select partitons to wipe
dalvik cache cache data int_sd android secure sdcard saystem; where do i find factory recovery to wipe
 
select partitons to wipe
dalvik cache cache data int_sd android secure sdcard saystem; where do i find factory recovery to wipe

No!!! Do NOT wipe your internal and external sdcard!!!!!!

Only wipe (can be found in advance options):

- System
- data
- cache
- dalvik cache

And then swipe to 'factory reset'

From WITHIN the custom recovery.
 
No!!! Do NOT wipe your internal and external sdcard!!!!!!

Only wipe (can be found in advance options):

- System
- data
- cache
- dalvik cache

And then swipe to 'factory reset'

From WITHIN the custom recovery.
okey, i have done this now and im waiting this file to download
 
okey, i have done this now and im waiting this file to download

You will have two options.

Place it on the root of your external sdcard and install the Rom from within TWRP. Or you can do what is called an ADB sideload. If you can't figure out how to get the Rom on to your external sdcard. Let me know and I will provide instructions to do it via, sideload.


Just remember, that once you are done installing the Rom. You MUST extract the boot.img inside of the zip file and flash it to your device using fastboot. THEN you can reboot your device.
 
where do i extract the boot.img and which folder is the root of my external sdcard

Extract the boot.img on to your computer over to where your proper adb/fastboot files are located at.

Root of your external sdcard means the very top of your external sdcard.

For example:

storage/sdcard0/ext_sd/rom.zip
 
i dont have adb and fastboot files in my sdcard but i got those on my computer desktop in zip filoe . should i move those to sd card?
adb.exe
fastboot.exe
adbwinaptid.dll
adbwinusb.dll
 
i dont have adb and fastboot files in my sdcard but i got those on my computer desktop in zip filoe . should i move those to sd card?

That's what I meant lol. The boot.img will be placed on to your computer in the same directory you have your adb/fastboot files.

You will connect your device to your PC and flash the boot.img to your boot partition using fastboot as described previously.
 
You will have two options.

Place it on the root of your external sdcard and install the Rom from within TWRP. Or you can do what is called an ADB sideload. If you can't figure out how to get the Rom on to your external sdcard. Let me know and I will provide instructions to do it via, sideload.


Just remember, that once you are done installing the Rom. You MUST extract the boot.img inside of the zip file and flash it to your device using fastboot. THEN you can reboot your device.
i need the information to get rom to external sd card, i dont want do do anything wrong again
 
i need the information to get rom to external sd card, i dont want do do anything wrong again

Boot in to your custom recovery. There will be an option in settings for you to do what's called, adb sideload.

Select adb sideload from WITHIN TWRP. Check the two boxes at the top of the screen, then swipe to start the adb sideload.

Now, place the Rom you downloaded in to the same folder where you currently have your adb/fastboot files on your computer. Open up the command window and type,
Code:
[B]adb sideload zip[/B] name_of_rom.zip

It will start to push the Rom on to your device. When it finishes, it will start installing the Rom for you automatically. When it is done, you need to reboot the bootloader. Then using fastboot on your computer, you need to flash the boot.img to your boot partition:
Code:
fastboot flash boot boot.img

When it is done, reboot your device:
Code:
fastboot reboot
 
Boot in to your custom recovery. There will be an option in settings for you to do what's called, adb sideload.

Select adb sideload from WITHIN TWRP. Check the two boxes at the top of the screen, then swipe to start the adb sideload.

Now, place the Rom you downloaded in to the same folder where you currently have your adb/fastboot files on your computer. Open up the command window and type,
Code:
[B]adb sideload zip[/B] name_of_rom.zip

It will start to push the Rom on to your device. When it finishes, it will start installing the Rom for you automatically. When it is done, you need to reboot the bootloader. Then using fastboot on your computer, you need to flash the boot.img to your boot partition:
Code:
fastboot flash boot boot.img

When it is done, reboot your device:
Code:
fastboot reboot
well this adb sideload seems to be slow i hope this is going to somewhere, found the adb sideload from recovery>advanced>sideload and checked the wipe cache things from it and swiped the sideload
 
well this adb sideload seems to be slow i hope this is going to somewhere, found the adb sideload from recovery>advanced>sideload and checked the wipe cache things from it and swiped the sideload

Good. That part is complete. Now, did you run the adb sideload command from your computer? If so, you should see it putting it n your phone from the command window with a percentage process. If you see this, then just be patient.
 
im not sure if the zip file is on root of sd card i just moved it from my pc to sd card, not in any folder

Place the zip on your computer. It should be in the same folder as your adb/fastboot files. Open up your command window and enter:

adb sideload zip name_of_rom.zip

You should see a percentage come on the command window screen which is basically displaying the progress of it copying the zip over to your phone. When it finishes, it will start the installation process automatically.
 
this adb sideload isnt going to anywhere its just loading but i dont see any process

Do you have the Rom zip placed in the same folder as your adb/fastboot files? Do you have your phone plugged in to your computer? Does your computer recognize your device?
 
when my phone is plugged in the computer i should mount sd card? i have the zip file in phone sd card not in fastboot file
 
when my phone is plugged in the computer i should mount sd card? i have the zip file in phone sd card not in fastboot file

Alright, if its already on your phone then we do not need to use adb sideload.

You just need to wipe system, data, cache, dalvik cache, and swipe to 'factory reset.

Then install the Rom. When it is complete, reboot the bootloader.

THEN EXTRACT THE BOOT.IMG ON TO YOUR COMPUTER, which will be found in the Rom zip, and place in to the same folder as your adb/fastboot files.

Then, run fastboot as follows:

Code:
fastboot flash boot boot.img



Afterwards, you may reboot your device.
 
can i install rom from computer? when i try to flash it from phone it says failed ...

What does it say when it fails?

Also, make sure your bootloader is unlocked (I would hope it is since you currently have TWRP on your device and you are S-On).
 
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