No Voice/Sound - Possible DSP Partition Error?

Dreaser

New member
Apr 5, 2011
2
0
0
Hi all,
First up huge shoutout to the XDA Members. I love the XDA forums, it’s a great resource, and whilst I don’t visit every day, I can say I am a regular user every few years when my phone becomes older, and I want a “Fresh Start”.

So Let me give some details/background of the issue I am facing (there is a TLDR part at the bottom of the thread, where I ask my main questions)

So I decided it was time for my HTC U11 to be “reset”, Install Root Access, and a custom Recovery to take nandroid backups.
Its model: UHL – Telstra - Australia
Baseband: 8998-200321-1905141529
Android Version: 9 (1/12/2019)
Build Number: 3.32.841.4

I had no real problems, installing TWRP Recovery, and using Magisk to obtain Root.
At this point I did Run a Nandroid backup, so I have a System Image, as well as the system partition and Boot partition (I could not Decrypt” the data partition within TWRP, this was a little annoying but I believe this is a normal issues faced, where TWRP does not Decrypt the data partition, very well) I wasn’t too concerned, I could live with Re-setting up my phone from scratch (as I wanted a clean install anyways)

My Stock System Rom was not altered and I could easily restart/re-setup the setup process on my Stock ROM


I decide to test some of the other custom ROMS available from the XDA Developer members, such as ViperROM, Pixel Experience. I found that I faced issues, where Wifi was just not recognized, when installing a custom ROM, After more research I believe that most of the available Custom ROMS for HTC U11 are built for Oreo NOT Pie.
After finding this thread, https://forum.xda-developers.com/showpost.php?p=80620553&postcount=1267
I decide yeah it cant hurt to downgrade just the DSP partition. To enable these Custom ROMS to work.

This is where I think things started to go pear shape.
I ran the DSP_TWRP_Flashable_OREO_2.33.401.19_install.zip but I did NOT get a backup of my DSP partition saved on my SD Card
(I wonder if the whole failed to decrypt data partition, may have caused this issue?) Anyways, I did not get a Backup of my original DSP Image.

When I Installed a Custom ROM, I still faced issues, where Wifi, didn’t work.
I decided to go back to my stock ROM, by installing my Recovery/android backup of my System Image
Again no problems re-installing my backup of Stock ROM, (of course needed to to the phone setup again, as Data partition was wiped)

This is where my main issue presented itself, im back on Stock ROM, but I have no voice or sound, when making or receiving calls. I can only guess that the Oreo DSP image, I installed is causing issues with my Stock Pie Firmware.

After doing more research it sounded like without a copy of my DSP image backup, I most likely needed to do an RUU Re-install and go back to the stock firmware And OS from HTC.
Ive since tried to re-install a number of RUU’s, Each with varying Errors


TLDR – So here is my plea to the community for Help.


At this point im willing to go 1 of 2 ways,
• either I move to a custom ROM as mentioned earlier, with a working Oreo DSP image. So wifi,etc all work
• OR I revert back to my Stock ROM, with a Working Pie DSP image (I like the HTXC Sense blinkfeed, so would prefer to stick with a HTC ROM (either modified or Stock)


Does anyone have a Working DSP image for HTC U11 UHL Pie ?

Or does anyone have a Pie or older RUU for HTC U11 UHL Telstra

Thanks everyone
 
Last edited:

hammered58

Senior Member
Nov 4, 2017
218
46
38
Wisconsin
I see a third option in a downgrade to oreo via the many tutorials in this u11 forum providing you can find a suitable oreo ruu that matches your cid/mid. Then once downgraded you just take the ota to get back to pie.. Just my 2 cents,, hth. Good luck
 

Dreaser

New member
Apr 5, 2011
2
0
0
Ive found a solution

Thanks, hammer for the reply, yeah i thought i may need to go back to Oreo. As the only RUU i could find for my CID: TELST001 was this one
https://androidfilehost.com/?fid=1395089523397917467
but as i mentioned i was getting errors, mainly error: 19 RU MAIN VER FAIL
im pretty sure you cant go back to Oreo from Pie, without tricking it by changing your version number. there's a few posts around, some mention needing to flash a your hosd partition. Good summary here: https://forum.xda-developers.com/showpost.php?p=80192495&postcount=14

However i decided, instead of flashing an Oreo RUU that matches my CID, i'd change my CID to match a Pie RUU.
i found i couldn't do this using 'htc_fastboot oem writecid' command (as im S_ON) but some great person created the HTC Dev Info Tools program. which uses ADB i believe to make changes.
i couldn't exactly find this tools official page on XDA but rather used the google drive link https://drive.google.com/file/d/1ubjDGNqCfIply-aRN8C7IQNb-YVkD4M7/view ( from that same thread above https://forum.xda-developers.com/showpost.php?p=80192495&postcount=14

Heres a quick video tutorial on how to use the Dev info Tools here https://www.youtube.com/watch?v=CnZjOghsnJ0
you MUST have root access on the phone for it to work ,and developer mode on i believe.

So i successfully changed my CID to the universal one of '11111111'

This allowed me to install this RUU (which im sure matched my MID of 2PZC10000) https://androidfilehost.com/?fid=1899786940962575190
i recommended installing via the SD card, to reduce errors, simply rename that downloaded zip file to 2PCZIMG.zip

For anyone else looking for RUU's for the HTC U11 i recommend searching AFH for '2PZCIMG' https://androidfilehost.com/?w=search&s=2PZCIMG&type=files

Something i found strange, and could not see anyone else commenting on on this thread https://forum.xda-developers.com/chef-central/android/tool-universal-htc-ruu-rom-decryption-t3382928
As i first tried just to just extract the DSP.img from that Pie RUU but the HTC Universal Decryption Tool didnt seem to decrypt/work on any Pie RUU that i tried it on. , i But i did see others apparently having success on here https://forum.xda-developers.com/showpost.php?p=80567339&postcount=14 (im guessing maybe i dont have the pie decryption keys and they are not in the downloadable 'repo' that the tool offers?) i think if i was able to decrypt the Pie RUU and access the dsp.img i could of just flashed that.

anyways just wanted to post those few links to some of those threads that helped me, and let others know what worked for me.

Cheers