Do this AT YOUR OWN RISK and I don't guarantee it will work on all Htc One V (but successfully done on my Htc One V (PrimoU)).
First: Credits go to:
1) paulobrien for his tools & guide
2) bagofcrap24 for the stolen unlocking bootloader tutorial..
3) ckpv5 for his thread on xda forum (http://forum.xda-developers.com/showthread.php?t=1598964)
Second: It is good to have official RUU for your Htc One V http://forum.xda-developers.com/showthread.php?t=1598964version. You can find the official RUU HERE(credit : JMZ) & HTCSync in case you something goes wrong and you need to revive your One V.
Or make a nandroid backup after you successfully unlock the bootloader. How ? Read further below. So read fully before you attempt to unlock bootloader and rooting.
http://forum.xda-developers.com/showthread.php?t=1598964
Third: the tutorial
Unlocking Your Bootloader
Note: After doing unlocking bootloader, all your data/apps are gone so make a backup to your PC first.
You will need to run the initial setup again.
1. Go Here "http://www.htcdev.com/" and create yourself an account on HTCDEV.
2. Download These Fastboot Files
3. Make a new folder on your C: drive called fastboot.
4. Extract The Zip downloaded in step 2 to the new folder
5. Go Here http://www.htcdev.com/bootloader/ and select "All Other Supported Models" and "then begin unlock bootloader"
6. Yes, Tick both Boxes, Proceed
7. Skip up to step 8 as we have all we need for the first 7 steps
8. Power off your phone by holding the power button down for 5-7 seconds (the three keys will flash a few times then it will power off)
9. Hold volume down button, the device will boot to HBOOT
10. Select Fastboot With Volume+or- then press Power once (you'll be in fastboot mode)
11. plug your phone into your PC and open a Command Prompt.
(windows XP - Click Start > Run > type CMD in box then press OK
(Windows 7 - Click Start > type CMD in search box then press Enter)
12. cd to your folder where we put fastboot files cd c:\fastboot
13. type this into your command prompt window fastboot oem get_identifier_token
14. select & copy the text as per step 9 on the HTCDev was my phone volume key isn't function well ebsite
15. paste your identifier token into the box at the bohttp://forum.xda-developers.com/showthread.php?t=1598964ttom and submit
You Will Very Shortly Receive an email from HTCDev with a link to the second part of the instructions and your "Unlock_code.bin" attached
16. download the "Unlock_code.bin" from the email and save it to the same folder that we extracted fastboot files to in step 2
17. type this into your command prompt window fastboot flash unlocktoken Unlock_code.bin
18. The Display Will change on your phone, press Vol + to accept and power to confirm.
Congratulations You Have Successfully Unlocked Your Bootloader.
After unlocking device, we can now flash in whatever ROM into our device.
There are few ROM i want to recommend here:
(1) Ignorance V5 (CDMA) by tonyryan
(2) MIUI V5(WCDMA) by denzh. p/s: one v 在全世界通行的版本是CDMA的，而在少數亞太國家售賣的WCDMA版本的ROM在網絡上相對少，WCDMA版如果刷CDMA的ROM會沒有辦法detect sim。
After ROM is well-prepared, we can now process to flashing step.
For those whose power key & volume key is not function well like i do, I use this software to help me getting my phone into fastboot mode. You need not to turn you phone off, simply connect the phone via usb and run the software and the software will automatically installed missing driver for you.
Once the software could identify your phone, choose "一键刷机“， then ”浏览ROM“， ”完整ROM”，“取消”，“开始刷机”，sit tight and all the process will be done all by the software.
#Problem: MIUI might Stuck In booting page （MIUI卡在開機畫面）
Some people might find themselves stuck in booting up MIUI. It's because the boot.img was not flash into the device well, so now we'll have to flash in the boot.img manually.
- Get your phone into fastboot mode ( either by software or hold power key & volume down key when the device is turned off ).
- You should be able to find "boot.img" in the zip of your ROM you're using. Copy that to the directory where your "fastboot.exe" located.
- Open " fastboot.ext", and type the following command.
- " fastboot flash boot boot.img"
- " fastboot reboot-bootloader "
- " fastboot erase cache ".
Now reboot your device and you should be able to boot into MIUI successfully.
#optional (flashing in a new recovery)
The reason we want to have a new recovery is simply because with the new recovery, we could simply flash our device by placing the ROM in microsd instead of using our computer.
Steps:
- Make sure your htc bootloader has been unlocked, else please unlock it, steps can be found above.
- Download the img file.
- Download fastboot (it's same with the fastboot mentioned above).
- Place the recovery.img in the folder where the fastboot.exe is located.
- Now open " fastboot.exe "
- Now type: " fastboot flash recovery name_of_the_recovery.img ".
Make sure you "wipe data/ factory reset" & "wipe cache data" before "install rom from sdcard".
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