[HTC U11  ROMs, Kernels, Recoveries, & Other Develo] System23:
then use these Firmware Files to Update your Device 2PZC50000 Firmware you can download the "OTA_OCEAN_WHL_P90_SENSE10GP_MR_NA_Gen_Unlock_3.37.617.1_R2-2.42.617.7_release_54543136oqoi5kod349uca.zip" and can extract the Firmware.zip from it and flash it via fastboot

or

you Download this TWRP flashable firmware 2PZCIMG_WHL_3.37.617.1_NoWipe_TWRP350.zip and flash it via TWRP

or

you use the "ARUWizard" to flash StockROM 3.37.617.1 and Update it!! 2PZCIMG_OCEAN_WHL_P90_SENSE10GP_MR_NA_Gen_Unlock_3.37.617.1_R2_Radio_8998-200321-1905211056_release_545430_signed_2_4.zip

Update Firmware via fastboot

######################

reboot to Download Mode with

adb reboot download

than

fastboot oem rebootRUU

and

fastboot flash zip firmware.zip

after complete the Flash

redo Steps

fastboot oem rebootRUU

and

fastboot flash zip firmware.zip

ARUWizard with PC

##############

You can Update to StockROM 3.37.617.1 with these Files

"ARUWizard.zip"

Download - klick Here

"HTC-RUU_Decrypt_Tool_3.6.8-WINDOWS64.zip"

Download - klick Here

"2PZC50000 StockROM 3.37.617.1"

#################

"2PZCIMG_OCEAN_WHL_P90_SENSE10GP_MR_NA_Gen_Unlock_3.37.617.1_R2_Radio_8998-200321-1905211056_release_545430_signed_2_4.zip"

Download - klick Here

Download

"ARUWizard.zip"

"HTC-RUU_Decrypt_Tool_3.6.8-WINDOWS64.zip"

and the needed StockROM ZIP for your Device

Save the Files in "C:\HTC_U11\"

and extract "ARUWizard.zip & HTC-RUU_Decrypt_Tool_3.6.8-WINDOWS64.zip"

now you copy the "2PZCIMG......zip" to Folder

"HTC-RUU_Decrypt_Tool_3.6.8-WINDOWS64" and open a Terminal

Type

cd C:\HTC_U11\HTC-RUU_Decrypt_Tool_3.6.8-WINDOWS64\

and then Type

##########

"RUU_Decrypt_Tool.exe -f 2PZCIMG_OCEAN_WHL_P90_SENSE10GP_MR_NA_Gen_Unlock_3.37.617.1_R2_Radio_8998-200321-1905211056_release_545430_signed_2_4.zip"

now its in Progress , wait if its Finished

then you see in "C:\HTC_U11\HTC-RUU_Decrypt_Tool_3.6.8-WINDOWS64\" a Folder called "OUT" and there 2 Folders "firmware & romzip" go into firmware Folder

"C:\HTC_U11\HTC-RUU_Decrypt_Tool_3.6.8-WINDOWS64\OUT\firmware\", and only Copy the "android-info.txt" and copy it to "C:\HTC_U11\ARUWizard\" or Type in Terminal

"copy C:\HTC_U11\HTC-RUU_Decrypt_Tool_3.6.8-WINDOWS64\OUT\firmware\android-info.txt C:\HTC_U11\ARUWizard\android-info.txt"

then you copy from "C:\HTC_U11\" folder the "2PZCIMG..........zip" to "C:\HTC_U11\ARUWizard\" and Rename it to "rom.zip", or Type in Terminal

"copy C:\HTC_U11\2PZCIMG_OCEAN*.zip C:\HTC_U11\ARUWizard\rom.zip"

and then connect the Device via USB and run "C:\HTC_U11\ARUWizard\ARUWizard.exe"

and Follow the Instructions!!!

After Finishing that youre back on StockROM and

!!!ALL WORKS FINE TOO!!!

hope it works with 3.37.617.1 firmware!! when not use the fix 4 the loudspeaker and calling issues here from 2.33.401.19 and flash the dsp.img from here dsp.img - klick here or flash this via TWRP HTC_U11_DSP_TWRP_Flashable_OREO_2.33.401.19_install both files are the same and from "Golv"!!! but make a Backup of your dsp partition bevor you flash it!!

Type in terminal on PC following commands

2 BackUp

#######

adb root

adb shell dd if=/dev/block/bootdevice/by-name/dsp of=/sdcard/dsp_backup.img

or

on Android Terminal Emulator only when you have root

su

dd if=/dev/block/bootdevice/by-name/dsp of=/sdcard/dsp_backup.img

2 Flash dsp.img

###########

adb root

adb shell dd if=/sdcard/dsp.img of=/dev/block/bootdevice/by-name/dsp

or

on Android Terminal Emulator only when you have root

su

dd if=/sdcard/dsp.img of=/dev/block/bootdevice/by-name/dsp

you can do this Tutorial with any HTC_U11 even its 2PZC10000,2PZC30000,2PZC50000,etc.... only search for your Firmware to update/downgrade here an choose yours HTC_U11 All Firmwares & OTAs & more - klick here

I have Downgrade my 3.34.401.1 PIE to 2.33.401.10 OREO and have on StockROM no WIFI/Hotspot, when you have the same Problem!!! Do following Steps!!!

use the Tutorial to Manipulate your board_info & misc partition with the StockROM Version at me 1.27.401.12 Nougat!!! Download this ARUWizard_2-works-with-nougat - klick Here and your 2PZCIMG.......zip HTC_U11 All Firmwares & OTAs & more - klick here!!! PS The ARUWizard in the Tutorial shows a Error at Flashing Nougat StockROM!! The ARUWizard_2 works without Problems. now Download

"HTC-RUU_Decrypt_Tool_3.6.8-WINDOWS64.zip"

Download - klick Here

and extract it to "C:\HTC_U11\HTC-RUU_Decrypt_Tool_3.6.8-WINDOWS64" and Copy your "2PZCIMG....zip" into that Folder and use Terminal with command

RUU_Decrypt_Tool.exe -f 2PZCIMG*, let them Finish the Process and go into "OUT" Folder and into "firmware" and copy "hosd_signed.img" to "C:\HTC_U11\hosd_signed_nougat.img" & "android-info.txt" to "C:\HTC_U11\ARUWizard_nougat\android-info.txt"

Than Copy your "2PZCIMG......zip" to "ARUWizard_nougat" Folder and rename it to "rom.zip"!!! Then Flash your modified board_info.img, misc.img & hosd_signed_nougat.img with Terminal and following commands

adb push "C:\HTC_U11\misc.img /sdcard/

adb push "C:\HTC_U11\board_info.img /sdcard/

adb push "C:\HTC_U11\hosd_signed_nougat /sdcard/

adb shell

su

dd if=/sdcard/hosd_signed_nougat.img of=/dev/block/bootdevice/by-name/hosd

dd if=/sdcard/board_info.img of=/dev/block/bootdevice/by-name/board_info

dd if=/sdcard/misc.img of=/dev/block/bootdevice/by-name/misc

After that your Ready to Flash StockROM Nougat with

"C:\HTC_U11\ARUWizard_nougat\ARUWizard.exe"

Let the Process Finish and you see WLAN/Hotspot is working, to keep it working on OREO

Download here HTC_U11 All Firmwares & OTAs & more - klick here your OTA......zip Files to Update your Device to OREO with working WLAN/Hotspot via StockRecovery and Terminal with command

adb sideload OTA........zip

or

make the Updates with MobileData/WLAN at "Settings\Info\Software-Updates"!!!

Thats All to do,

and i have no idear why WLAN/Hotspot with direct Flash StockROM OREO not work,but to Downgrade it to StockROM Nougat and Update it via OTAs help to Solve the Problem, and all is fine. The StockROM PIE works without Problems!!