12-19 - ViperExperience Beta 14 | Android 13 | November 2022 Security Patch |GSI - HTC U12+ ROMs, Kernels, Recoveries, & Other Develo

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ViperExperience 12L GSI for U12+
"Choose your flavor! - The next Generation Viper ROM"
Dear Community,
Venom ROMs takes the next big step for your HTC, as well as other Treble A/B devices out there! You want Android 11, but don't want to miss out on the hardware benefits of your HTC U12+? Or you want to enjoy all of your beloved HTC Apps on another OEM? Then we have the best of both worlds for you today (or very soon)! Decide for yourself between an Android Stock Experience, or an HTC Sense Experience by choosing between Pixel Launcher and HTC Sense 10 UI Launcher. On your HTC U12+ you can in addition continue to use your popular HTC features like HTC Edge Sense, HTC FaceUnlock and the HTC Camera!
We at Venom ROMs are using the AOSP GSI based on Android 11 to bring you the best HTC features paired with the latest Android AND Pixel experience from Android 10.
Thanks to @phhusson for his Treble experimentations repos, @JEANFRIVERA, @5m4r7ph0n36uru, @Captain_Throwback, @MassStash, @donmarkoni for all tests you did for me to make this ROM.
mikalovtch
Must have unlocked bootloader from htcdev.com or factory S-OFF
Download Viper Experience 11 GSI from Androidfilehost.com
Download „vbmeta_noverity.zip“ from Androidfilehost.com
Download latest TWRP from #2 post or Download latest PBRP from here: PBRP
Boot your Device in Bootloader Mode
Boot to TWRP or PBRP, using the following command:
Code:
fastboot boot nameoftwrpimage.img
Rename „vbmeta_noverity.zip“ to „update.zip“ and place it inside your adb/fastboot folder
Push „update.zip“ to your device, using the following command:
Code:
adb push update.zip /update.zip
Make sure you are on slot A on reboot page of TWRP or PBRP if not switch to slot A and fasboot boot twrp.img again
Flash „update.zip“ from recovery UI
Reboot to Download from recovery UI
Erase userdata and system using the following commands: (THIS WILL FORMAT INTERNAL STORAGE!)
Code:
fastboot erase userdata
and:
Code:
fastboot erase system
Flash Viper Experience 10 GSI, using the command:
Code:
fastboot flash system nameofimage.img
Rebootyour device, using the command
Code:
fastboot reboot
Setup and enjoy an mew ROM on your HTC U12+!
​
XDA:DevDB Information
12-04 - ViperExperience Beta 12 | Android 12L | April 2022 Security Patch |GSI , ROM for the HTC U12+
Contributors
mikalovtch, JEANRIVERA
Source Code: https://github.com/phhusson/treble_experimentations
ROM OS Version: Android 12L
ROM Kernel: Linux 4.x
ROM Firmware Required: Android 9 Pie
Based On: AOSP HTC Sense
Version Information
Status: Beta
Beta Release Date: 2020-12-22
Created 2020-03-07
Last Updated 2020-12-22

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​
Prerequisites
PIE_noverity_vbmeta_both_slots-TWP.zip: This zip patches the stock vbmeta for BOTH slots to ensure the device will boot after flashing the GSI. The zip in the OP only patches slot A, so you would have to ensure you are on slot A when flashing the system image. This zip allows either slot to be used. Thanks @The_Walking_Playground for posting the updated zip!
Fixes
UPDATE-BeyondStock™_U12+_Exodus_Vendor_Fixes-CPTB-signed.zip: This zip patches the vendor partition on U12+ and Exodus devices to fix Bluetooth streaming/headset compatibility, and enables exFAT support with the stock and BeyondStock™ kernels (NOTE: The exFAT portion of this fix is no longer needed, but has no negative side effects).
Patches
UPDATE-BeyondStock™_Header_Patch_U12+_Exodus-CPTB-signed.zip: This zip patches the boot.img header of the installed kernel so that decryption will work in permanently installed TWRP. This zip should be used if you're using a custom kernel that doesn't require patching for touch.
UPDATE_BeyondStock™_U12+_Exodus_Remove_Forced_Encryption_CPTB_signed.zip: This zip disables forced encryption on the device so that it doesn't automatically get encrypted after Formatting Data in TWRP.
Custom Recovery
Official TWRP for U12+: This is the recommended TWRP version to use with the ROM, with full Android 11/12 decryption support.
Kernels
UPDATE-BeyondStock™-Kernel-Pie-v0.02-U12+_Exodus-signed.zip: This zip installs the BeyondStock™ kernel which has patched touch for permanently installed TWRP older than 3.4.0, and patches the boot.img header so that decryption will work. It also supports the stock exFAT implementation.
UPDATE-BeyondStock™-Kernel-Pie-v0.02-U12+_Exodus_TWRP_3_4_0_CPTB.zip: This zip installs the BeyondStock™ kernel which has patched touch for permanently installed TWRP 3.4.0 (and higher), and patches the boot.img header so that decryption will work. It also supports the stock exFAT implementation.

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[MANUAL] Fix CTS Profile Mismatch
Initial situation: most GSIs are rooted to a certain extent. This also applies to the AOSP GSI, which is the basis of our ViperExerience ROM.
Precondition: To correct the CTS mismatch, it is necessary that Magisk is installed.
If the precondition is fulfilled, proceed as follows:
Install the Magisk modules "Busybox" from Osmosis, and "MagiskHide Propst Config" from Didgeridoohan
After a device restart, open a Terminal App on your HTC U12+ and go through the following steps
Request root privileges by typing
Code:
su
Start the Props module by typing
Code:
props
Type
Code:
1
to set a new fingerprint for the device
Follow the instructions in order by selecting
Code:
f
and
Code:
7
(for HTC).
finally type
Code:
4
(for U12+ Pie).

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How to permanently flash TWRP via the TWRP.img file inside TWRP
1. Make sure you have a working fastboot and adb environment! Your device´s bootloader must be unlocked!
2. Download the twrp.img file from here: https://github.com/CaptainThrowback/android_device_htc_ime/releases
3. Boot to TWRP. Navigate to Advanced -> Install Recovery Ramdisk -> Choose the twrp.img downloaded earlier. Wait for the flash to be completed successfully and do either
4. Download BeyondStock™-Kernel This zip installs the BeyondStock™ kernel which has patched touch for permanently installed TWRP, and patches the boot.img header so that decryption will work. It also supports the stock exFAT implementation.
5a. If you want to be rooted flash the magisk.zip
5b. If you don't want to be rooted navigate to Advanced -> Fix Recovery Bootloop to be able to boot into system
Thanks to @JEANRIVERA

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reserved

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reserved3

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reserved4

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reserved5

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reserved6

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Support
Hi users, I was a noob once too, believe it or not I had questions & stupid questions too but I was never afraid to ask, in my way to be part of this amazing team I have known all kind of Devs, with different levels of friendliness , but being honest in some way or another I have learned from all of them a little something, Now I want to give back to the community as much as I can, I am no Dev, but I do know a trick or two, if I don't know the answer to your questions, I will try my best to get an answer for you from the Team.
The instructions in the OP have been updated for better understanding and corrected some points, if anyone has tried unsuccessfully to flash this ROM please follow the updated instructions, if anyone have trouble or not booting device please feel free to ask, I will try to guide anyone as much as I can and as friendly as possible. I see there is 73 downloads on AFH of the ROM but only few users reported their experience here, maybe if you are afraid to ask, don't be, if you navigate through the thread you will see only friendly responses, and I will try my best to keep it that way, don't be afraid to tag me for support

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And I'll take this one, just for the kicks.

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I am running android 8 with viper 2.0 and i tried to update to this but ADB says that my file system is read-only. What is the recommended course of action?
Code:
adb: error: failed to copy 'update.zip' to '/update.zip': couldn't create file: Read-only file system
I read elsewhere that 'adb root' would be needed but i figured it would be better to ask here instead of following some random post about a somewhat similar situation.

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First off: don't install this ROM on Android 8 firmware. It's an Android 10 GSI and all development an testing has been done on the latest EMEA firmware.
So the way to go from ViperU12+ would be to go back to full stock unsung a RUU and upgrade to Android Pie. This is to make sure you start from the correct base and environment. Then boot the device and copy the vbmeta zip onto /sdcard. Then reboot to bootloader and boot to TWRP, and follow the instructions from post #1 to the point.
Use the latest TWRP from @Captain_Throwback, found here: https://github.com/CaptainThrowback/android_device_htc_ime/releases/tag/3.3.1-2
Sent from my Pixel 4 XL using XDA Labs

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it should be: 9 Reboot to Download from TWRP UI not
9 Reboot to bootloader from TWRP UI
on Production Units in Bootloader you get an error:
FAILED (remote: Erase is not allowed on PRODUCTION device)

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This ROM is been running quite fantastic for me, I am so excited to help test and get this released for everybody to use! Can't believe we have Android 10 on this u12 plus Beast, it's so amazing! LOL thank you so much @mikalovtch, @JEANRIVERA, @Captain_Throwback, &
Sent from my HTC U12+ using Tapatalk

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Oh man, you`ve done brilliant work:highfive::good:
it is almost perfect, butter smooth and fully functional except few bugs.
some issues are:
1. time and date automatically reset to 2020.03.07 4:47 after reboot, which can be quite annoying.
2. edgesense squeeze gesture feedback is weird. it`s not like the feedback of power btn but vibrating.
3. edgesense setting does not show in the settings.
some Pro tips:
1. flash system.img via twrp or via usb under DOWNLOAD mode. you can not flash it under BOOTLOADER mode.
2. you can access edgesense settings by this method:
goto Setting.Apps, show all system Apps and find out edgesense service app. In the detail screen(where you can clear the cache and force stop, idk the exact term), tap Advanced, Additional settings in the app.
3.kirisakura kernel tested, all good.
btw i use China version u12+, hope this will help you.
Thanks you bro!

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issue has been fixed

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JEANRIVERA said:
without the vbmeta.zip the ROM will not boot at all, the instructions fail to specify you must be on slot A to flash the vbmeta.zip and ROM, instructions will be updated soon, if you are on slot B another vbmeta zip should be used.
Click to expand...
Click to collapse
thank you! but i still boot without flashing vbmeta.

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neoncloud4399 said:
thank you! but i still boot without flashing vbmeta.
Click to expand...
Click to collapse
is your device S-OFF? that would be the only possible reason it boots

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JEANRIVERA said:
is your device S-OFF? that would be the only possible reason it boots
Click to expand...
Click to collapse
no, it still s-on.
i followed this procedure:
clear system, flash system, clear userdata under twrp
flash vbmeta.zip under twrp By sideload
reboot, failed to boot, show warning messages.
run fastboot oem rebootRUU to ruu flash mode and downgrade to 1.21
fastboot erase persist
boot to 1.21 China then upgrade to PIE.
boot to DOWNLOAD, erase system, userdata, flash system both system_a and system_b and it boots.