[HTC EVO 3D] Unknownforce:
FAQ's

Can I do this on Windows?

Currently there is no way to do this on Windows. It's unlikely that there will be a way to do it on windows, Windows USB is too slow and doesn't detect the device the same as Linux does.

Can I do this in (Insert virtual PC software)?

The only one I've heard that works is VMWare, however You're again relying on Windows to pass the device to a virtual machine, which isn't ideal. I know for a fact that VirtualBox does not work, and Cygwin also does not work.

Common Errors

I can't get my phone to brick, I've tried a million times!

Patience is a virtue. This step is the hardest part of all, HTC Designed their phone to be brick proof for a reason. I believe the trick here is to let the device sit on the update screen for a minute or two, then do the update and count out 5 seconds. Also there's the update bar that appears in the upper right hand corner, much like the bar that is there when it's checking the zip file before the update prompt. The INSTANT you see that, pull the power. This is typically 5-6 seconds after it says updating, but only after it's been sitting for a bit... I believe the trick is to let it sit for a bit before pressing Volume up to update.

My PG86IMG.zip is not detected or the phone checks it and it doesn't prompt me to update it

There are several possibilities:

The phone is HTC Unlocked - You must re-lock.

The phone is S-OFF - Don't even try to brick it because you'll permanently brick it.

The phone is Re-locked, but still has a custom rom/recovery on it. - This will show a security warning and not allow the PG86IMG.zip to be flashed. - You must put the phone in FASTBOOT USB and run the RUU exe that matches your software version.

The File is not named correctly, it's PG86IMG.zip (Make sure it's not PG86IMG.zip.zip)

The PG86IMG.zip is either corrupt, not signed properly, or modified in some way. - Download another one.

I press Volume up to Update, and my phone shuts off

First make sure you're using a standard HTC A/C Adapter and cable. These are designed to charge at 1000 mA, other manufacturer's chargers typically only hit 900 mA. The phone needs it all to stay on and update properly without the battery in.

Second, make sure you're not using a higher end SD Card. This will draw too much power and not let the phone update when it comes to that time because the power drain to have the screen on, the sd card powered and the update running is more than what the A/C adapter can output. - My 16GB Class 10, shuts the phone off, my Class 4, 2 GB, does not. YMMV.

Third, if you're stuck with the high end SD card, or think it could be the cause, simply pull it after you pull the battery and BEFORE you press volume Up to update. The phone will still update. However, I don't know if this affects the speed of the update at all... so just watch it the first time and time it, then time your pull accordingly.

I'm getting Permission Denied when trying to run the linux commands

You don't have root, either type su or sudo -s, your prompt should have a # at the end and not a $.

Or, you didn't set the chmod correctly on the downgrade file. This is again chmod 755 downgrade (or /path/to/downgrade)

I get Misc image is missing!!! or HBOOT image is missing!!!

The hboot.img and misc.img files must be in the same location as the downgrade file, they are hard coded into the downgrade tool to be in the same location, their names are also hard coded, so don't rename them.