[HTC U11  Questions & Answers] Dreaser:
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://xdaforums.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

2PZCIMG_OCEAN_UHL_P90_SENSE10GP_MR_HTC_Europe_3.34.401.1_Radio_8998-200321-1905141529_release_signed.zip - https://androidfilehost.com/?fid=1899786940962575190

https://imgur.com/A2Jic46

2PZCIMG_OCEAN_UHL_O80_SENSE90GP_HTC_MR_Telstra_WWE_2.33.841.13_Radio_8998-002772TOV-1712061121_release_532564_combined_signed_2_4.zip - https://androidfilehost.com/?fid=1395089523397917467

https://imgur.com/REpkBhe

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