[HOW-TO]Downgrade to get S-OFF after updating to latest OTA 2.11.605.9

[Felessen]

So yea, I just purchased a Thunderbolt a few days ago, wanted to to run stock, but increase efficiency, battery life is horrid on this thing. Anyways, I believe I have been tricked into thinking the official HTC bootloader unlock method allows one to do the things I want. If it does not, I have no clue as to how to go about cleaning up my phone as I don't have root access, the apps I want to use won't run. Any suggestions would be nice.

[Ads]

[kaleeb]

Is there any way to relock the phone? I am not worried about warranty.

[Felessen]

Is there any way to relock the phone? I am not worried about warranty.

Yes, assuming you are talking about the bootloader. You must be logged in at the HTC Dev site before this link will work.
HTCdev - Please Log In

Step 14 is how to re-lock the bootloader.

[kaleeb]

I'm sorry for posting all of these questions in a development forum but I am trying to understand all of this stuff. Why can't a phone be downgraded if the bootloader is unlocked? Wouldn't that make it easier?

And I am re-locking it now.

[Felessen]

I have not a clue if this matters or not at this point, I am unable to root my phone, its bootloader is unlocked through the HTC tool on their Dev site, I am S-On, and have no root access. stumped. here is the link to the original rooting thread where I have a discussion, I hope to get something resolved. On last page.
[RS Approved] REVOLUTIONARY-The 5 minutes or less ROOT without data loss!!!

[letdolphin]

Thanks so much - just rooted my first phone. Thanks for the step by step

[sonicbuffalo]

congratulations! Not a Newb any more!

[boidsonly]

Hi folks,
I am stock Rev. rooted. Verizon slyly downloaded the .9 update on my phone in the dark of the night but I was able to recover/reboot the phone. I then froze some things that prevented the phone from upgrading again and stopped the nagging to upgrade. Not a peep since.....

Question is:
Since I am rooted and running .5, can I simply download and install the new radio given my TBolt's current state?

I read the thread but didn't see my question covered-if it was I apologize. Many thanks in advance.

regards,
Jeff

[Tallica]

Hi folks,
I am stock Rev. rooted. Verizon slyly downloaded the .9 update on my phone in the dark of the night but I was able to recover/reboot the phone. I then froze some things that prevented the phone from upgrading again and stopped the nagging to upgrade. Not a peep since.....

Question is:
Since I am rooted and running .5, can I simply download and install the new radio given my TBolt's current state?

I read the thread but didn't see my question covered-if it was I apologize. Many thanks in advance.

regards,
Jeff

Yes u can, you can also install the rooted version of the 605.9 OTA from our Rom list thread, if u like.

Sent from a long time ago, in a galaxy far far away, from my hTc Thunderbolt

[zh.chenyan]

I countered the same problem following till step 8 and the menu back to the beginning, never popped up anything about update press volume up. Tried a couple of times, only find my 4g LTE no longer works...

Can someone please help? I have never rooted my phone nor unlocked ever.