Downgrading the HBOOT - HTC EVO 3D

Hey all,
I've been looking looking looking, and I cant seem to find a clear answer to what I need. I currently have the EVO 3D, unlock with HBOOT 1.58 SOFF. I would like to use some other roms but they need a lower version of the hboot (1.4). Whats the method for downgrading this? Any help is greatly appreciated!!!
Thanks!
Mark

You can start with this post.
ramjet73

I posted that for someone else here: http://forum.xda-developers.com/showthread.php?p=33952307

Related

[Q] Root Eris with Hboot 1.49 S-ON

My Eris has HBOOT 1.49 S-ON. I'm new to this. I can't upgrade untill next year so I've been reading alot of these forums and I would like to root my phone so I can increase the processer speed and to get 2.2 on it. Some people say a phone with this hboot can't be rooted and others say it can be. Everything I've read is a couple of months old. Are there newer post. Is there a simple way to do it if it can be done like maybe a one step or something. I'm a layman at this stuff so if some of you guy's could help I would greatly appreciate it.
bobcat331 said:
My Eris has HBOOT 1.49 S-ON. I'm new to this. I can't upgrade untill next year so I've been reading alot of these forums and I would like to root my phone so I can increase the processer speed and to get 2.2 on it. Some people say a phone with this hboot can't be rooted and others say it can be. Everything I've read is a couple of months old. Are there newer post. Is there a simple way to do it if it can be done like maybe a one step or something. I'm a layman at this stuff so if some of you guy's could help I would greatly appreciate it.
Click to expand...
Click to collapse
I'm not sure which one the 1.49 is but just get the latest Verizon OTA update (the latest 2.1 update should lead you right to it) which was from July then find the one click root method in I think the Amon_RA thread in the development section.

[Q] Possibility of downgrading H-boot...???...Could this work for us as well?

Please take this as me trying to be helpfull and keep the flames to matchstick proportions if I happened to miss someone else bringing this up previously...
I was poking around in the Shift forums in hopes that an exploiot had been found for me to root the wifes Shift and came across this...
http://forum.xda-developers.com/showthread.php?t=1255474
These excellent people have found a way to downgrade H-boot and Android on the Shift to allow you to flash an earlier version that didnt include the locked bootloader which makes it possible to gain perm root.
I know our phones came locked, but could this be a possibilty for helping those who ended up with 1.5 H-boot to regain 1.4 and be able to use Revolutionary instead of HTC's method?
Geez I hope so, hopefully the exploit isn't specific to the evo shift
Unfortunately it doesn't work with the 1.15 hboot. With S-ON it not only checks the firmware version but the hboot version as well. We could modify the hboot version so it thinks that's the same but then you invalidate the signature on both the hboot and the PG86IMG zip.
Well, damn...was hoping...but damn. Worth a shot anyway.
Please use the Q&A Forum for questions Thanks
Moving to Q&A
Ok, sorry about that.

[Q] Stock ruu and rom

Ok so it is possible that this question has already been asked, but I cant find it so im gonna ask it
Does anyone know where i can find a stock ruu and rom for my htc evo 3d.
Im currently running hboot 1.58
I have tried to run many types of ruu but with no luck at all.
I also have a windows eight pc that for some reason doesnt like htc drivers.
I hope someone will be able to help me out with this question
This post might help with your Windows 8 driver issue. http://forum.xda-developers.com/showthread.php?t=2061435
The zip in the op of this post has the ruu you need (assuming you're Sprint judging by the hboot number). http://forum.xda-developers.com/showthread.php?t=1889438

Stock ruu 3.15.651.16

Does anyone have the absolutely stock RUU? I'm stuck on HBOOT 2.09 and need to unroot and relock to be able to get my corporate email back on my phone.
Trust me, guys, I've searched to find some links. And as a last resort, I'm posting this here. The sticky with the stock RUUs no longer has our device listed and no one else seems to have a working link.
If anyone can help, it'd be much appreciated since my phone is currently stuck in bootloader.
Thanks.
Questions should be in Q&A not Development and click my SIG you will find what you are looking for

downgrade h boot

is there a way to downgrade hboot? i'm s-on and htcdev unlocked
res0sf9v said:
is there a way to downgrade hboot? i'm s-on and htcdev unlocked
Click to expand...
Click to collapse
You have not included any additional information about your device obtainable by using 'fastboot getvar all'. I suggest you look through the forums to find at least fastboot and adb if you do not already have them as you seem to be in a position to need them.
Unfortunately your HBoot needs to be S-OFF in order to downgrade HBoot (which, as far as I am aware is only possible with Sunshine, which costs $25, if HBoot is version 1.55 or above; correct me if I am wrong, I am awaiting a reply to my own post regarding a similar topic).
If you manage to gain S-OFF, the procedure is fairly straightforward and is documented here, among other places:
minimally: http://forum.xda-developers.com/showthread.php?t=2447531,
thoroughly, but note Firewater was superceded by Sunshine: http://forum.gsmhosting.com/vbb/f48...-s-off-change-cid-downgrade-hboot-os-1838907/
Also this is a good place to look for more information on using fastboot: http://forum.xda-developers.com/showthread.php?t=2277112
and here you may find details on how to S-OFF an HBoot version 1.54 or lower: http://www.htc1guru.com/guides/get-s-off/.
Please always try to search the forums before posting a new thread when looking for the answer to a question you may have as your question may have already been answered. A little "Google-fu" doesn't hurt either.
Also it does help to add a "[Q]" before the title of a thread, followed by a question which sums up what you are essentially asking within the thread when making a new forum thread to ask a question as it does help bring attention to your post as a question.

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