[HTC One X] mikey0105:
Yes, there are tutorials out there on how to recover from total disaster, which is really useful. I've actually used those last month to recover from HTC BOOT SCREEN logo, but i can still see a couple of folks out there who can't get out of the problem...

This guide will be helpful to those who don't have back-up on their CWM and no ROM saved on their SD card :)

I'm doing this guide to at least minimize the confusions or the need in posting on how to FIX their phone, i checked the STICKY threads and there's no clear guide on how to do it VIA "CMD", all information below are gathered around the web, xda forums, and some from my experience, thanks to them :D

I'm just trying to help out and make things easier.

If this thread helped you with your problem, you can always HIT THANKS & RATE above :D and to the posts that I linked here :)

HERE'S HOW:

1. Turn off then plug your device, and wait till it says "Device Connected" on your task bar

2. NOW we need to check if you have the driver installed for you're device, just simply right click the "My Computer>Properties>Device Manager"

3. If there will be an EXCLAMATION MARK or QUESTION MARK (not sure of the two) on your HTC device, you need to download the correct driver

4 go here and download the correct driver

5. Once Downloaded, go back to Device Manager, Right click your connected device with Exclamation/Question mark, then choose Update Driver>Browse Files>Select your downloaded driver, once finished. you can close those windows and proceed to next step.

6. Create a New Folder into your drive C:, rename it "fastboot"

7. Download fastboot files here, extract>copy all extracted files to the fastboot folder that you've just created.

8. Now, we need to make sure that the ADB inside the fastboot folder that we created is working, on how to check? go here

9. This is important, BREATHE, RELAX, and SMILE :) Now to the next step....

10. We need to download the CWM here, just choose the latest unofficial test recovery with USB issues fixed and automount and any ROM that you like here

11. After downloading, we must rename the ROM to update.zip and CWM to recovery.img

12. Extract the ROM and get the boot.img inside

13. COPY boot.img, update.zip and recovery.img to fastboot folder

14. Put your phone into fastboot mode with unlocked bootloader

15. Flash boot with command "fastboot flash boot boot.img"

16. After flashing, Boot recovery using "fastboot flash recovery recovery.img" command

17. After flashing recovery.img, use command "adb push update.zip /sdcard/update.zip" to send the ROM to phone, just be patient, it might not respond for a couple of minutes since the ROM file is big which is usually 500mb,

AS PER ckpv5 there's some changes to this new recovery, see below:

18. Install the ROM from update.zip in recovery

19. Reboot your phone and everything should be working again, just be patient with the first reboot, it might take some time to open :D

20. If still stuck? go back to fastboot usb, type this command to CMD, "fastboot erase cache" then "fastboot reboot-bootloader"

21. That's all, enjoy your One X again :D

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NOTE:

- If step 17 is not happening, just don't rename the ROM file to update.zip, leave as it is, and use this command instead, "adb push update.zip /sdcard/EXACT NAME OF THE ROM.zip"

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COMMON QUESTIONS OF THE NEWBIES:

How to enter fastboot?

- Hold down POWER BUTTON + VOLUME DOWN, wait for atleast 3-5 seconds

How to open CMD?

- Simply click the Start button of your PC, you should see there CMD or COMMAND PROMPT or you can TYPE CMD in the search panel and hit Enter

How can i open the fastboot folder via CMD?

- Once CMD is open, type "cd c:\fastboot" hit enter, then you can enter the commands, use c:\ if fastboot files is located in your drive c, d:\ if located in your drive d...

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You can also go to this STICKY THREAD for additional reference.

If i missed something, please feel free to comment, much appreciated :)

That's All, hope it helps.. Have a Good Day! :D