[HTC EVO 3D] leogy101:
This all might be just me, but after being on this site for quite some time now and working on the Evo 3D I have really grown knowledge of Android OS. Though i could be wrong with all this haha...

Evo 3D with "s-on" will have problems flashing kernels and roms. After working on mine, i've noticed that when my phone was "s-on" I could only flash VM ICS (using Virgin mobile Kernel) or I could flash any of the ICS Roms but only with the Anthrax Kernel. Any other Rom/Kernel combo will give bootloops.

Another thing when flashing Roms/Kernels is to take in mind what h-boot you are on. I started out "s-on" h-boot 1.5 (unlocked), and my rom/kernal choices were slim, like i said above.

I recommend doing Juopunutbear's method of achieving "s-off" with the method also changing your h-boot to 1.58.5858 (custom h-boot). Once you have done that, Download the h-boot 1.4 and rename the zip file to "PG86IMG" with the file extension still being ZIP. Place that on the ROOT of your SD card. Then disconnect your phone safely from your computer.

(The reason why you want to downgrade your HBOOT to 1.4 is so you can flash any of the new JellyBean Roms. If you tried flashing a JB rom when your HBOOT is 1.5 or still on 1.58.5858, you will get bootloops)

Turn your phone off, once off hold the volume down button and power button. Release the power button after 2-3 secs but keep the volume button down till your phone boots into the bootloader.

Once in the bootloader, It should scan your SD card automaticly for that file you placed on it from before. (If you have your phone still plugged in to your computer, when booting up into the bootloader it might be on fast boot, just click bootloader by selecting with with the volume keys then choosing it with the power button) Once it scans and finds the file, it will ask if you want to update. press the power button to select yes, then let it update.

Restart your phone back into your Rom, and connect it to a USB again. Then go onto your SD card and remove (or rename) the "PG86IMG" file.

Once done, disconnect from the computer and restart your phone back into the bootloader.

Your EVO 3D should now say this at the top of the screen when on the bootloader menu.

SHOOTER XC SHIP S-OFF

HBOOT - 1.40.0000

RADIO - 1.09.00.0706

eMMC-BOOT

If it says "s-off" and your hboot is 1.4, then your EVO 3D can now flash any ICS roms with any kernel. Also any JB Roms as well.

Always do a Nandroid Backup before you flash any rom just incase something goes wrong (but with you being s-off and hboot 1.4 you shouldnt ever have a problem) BUT BE AWARE, nandroid backups are large files, so if you are running out of room on your SD card, you should make space. Always name the backup by something you can remember (usually the rom name with the version number). If you wanna make another backup, delete or move the old backup to your computer.

Last thing i noticed when always working on my phone, when deleting stuff off your SD card, sometimes those files you delete are not actually removed from the SD card, but moved to a hidden folder within the SD card still. Just change your viewing setting to be able to view hidden files/folders. You will see a faded folder named ".Trashes" open that, then open the "501" folder and you should see the files you tried to delete. Just remove those and you have then freed up your SD card.

I Honestly think this was my first post and I hope i helped in any way. Anymore questions, you can always ask me.:D

MY PHONE :D

HTC EVO 3D

S-OFF

HBOOT 1.40

ROM: JellyBean 4.1.2 Unofficial AOKP v3.3

KERNEL: ButteredToast-RLS13.6