[ROM][11.0_r56]JAGUAR ONEPLUS 8 OFFICIAL V21 Updated June 7, 2022

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optimumpro

Senior Member
Jan 18, 2013
7,414
14,767
OnePlus 8
May 11. New release V-20.1

1. Redone adaptive brightness
2. Call recording (bug introduced in V-20) fixed
3. Captive portal: added 3 options Standard (Google), Alternative and Disabled; and moved to Settings/Network
4. Fingerprint icons and colors made more transparent, so, now fingerpint works flawlessly.

Download in post #3.
 

scorpio76r

Senior Member
Jan 10, 2016
1,415
515
All over like street lights
May 11. New release V-20.1

1. Redone adaptive brightness
2. Call recording (bug introduced in V-20) fixed
3. Captive portal: added 3 options Standard (Google), Alternative and Disabled; and moved to Settings/Network
4. Fingerprint icons and colors made more transparent, so, now fingerpint works flawlessly.

Download in post #3.
The Jaguar version is showing 20.0 after flashing the 20.1 update. Was
 

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scorpio76r

Senior Member
Jan 10, 2016
1,415
515
All over like street lights
I usually do not use my phone while walking outside but, today I did. I noticed that I couldn't see my screen. It was dark. When I got out of the sun a little and in to some shade I could see my screen a little and, I went into settings. I saw that my brightness level was at 100% but my screen was dark. I have adapted brightness enabled also. How do I fix this issue with not being able to see my screen when it's sunny outside?
 

optimumpro

Senior Member
Jan 18, 2013
7,414
14,767
OnePlus 8
I usually do not use my phone while walking outside but, today I did. I noticed that I couldn't see my screen. It was dark. When I got out of the sun a little and in to some shade I could see my screen a little and, I went into settings. I saw that my brightness level was at 100% but my screen was dark. I have adapted brightness enabled also. How do I fix this issue with not being able to see my screen when it's sunny outside?
Are you saying that maximum brightness is not enough when at direct sunlight or that the actual brightness is not maximum brightness in your case?
 

scorpio76r

Senior Member
Jan 10, 2016
1,415
515
All over like street lights
Are you saying that maximum brightness is not enough when at direct sunlight or that the actual brightness is not maximum brightness in your case?
Maximum brightness is not enough in my case. This is happening to both of my 8's both on latest version of the rom. I'm not sure sure if this ever happened on oxygen oos but, I'm never going back to that horrible software to see if that happens on it.
 

crashfly

Senior Member
Oct 7, 2009
70
12
I would like to change over to this ROM. I have downloaded the latest v20-1 zip and I downloaded the v20 recovery. However, after following instructions to flash the recovery img and then attempting to reboot to recovery, I get an error of "The current image (boot/recovery) have been destroyed and can not boot. Please flash the correct image or contact customer service to fix it."

The bootloader is appears to be unlocked according to the still working system on slot a.
It says 'OEM unlocking', "Bootloader unlocked".
Attempting to 'fastboot oem unlock' responds with "Device already : unlocked!", so the device is flashable.

It just appears that recovery.img is somehow corrupted?
Downloaded twice with md5 hash of '9507d66832e591a98353dfadabeb47c9'.

Anyone got any suggestions?

Edit: Nevermind. I just realized this is based off of android 11 and my phone currently has android 12. That would explain it.
 
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optimumpro

Senior Member
Jan 18, 2013
7,414
14,767
OnePlus 8
As I said earlier
Edit: Nevermind. I just realized this is based off of android 11 and my phone currently has android 12. That would explain it.
That is NOT the reason. All custom Android 11 and 12 roms require OOS-11 in both slots. So, if you were on a custom 12 rom, you'll be fine with Jaguar, but if you were on OOS-12, then in order to run any custom rom (11 or 12), you need to downgrade to OOS-11 in both slots.

Try recovery from earlier release. You can also use Lineage recovery or even TWRP.
 

crashfly

Senior Member
Oct 7, 2009
70
12
As I said earlier

That is NOT the reason. All custom Android 11 and 12 roms require OOS-11 in both slots. So, if you were on a custom 12 rom, you'll be fine with Jaguar, but if you were on OOS-12, then in order to run any custom rom (11 or 12), you need to downgrade to OOS-11 in both slots.

Try recovery from earlier release. You can also use Lineage recovery or even TWRP.

Because I do not know, I would like to know why OOS-11 is required in both slots?

One would assume that an Android 12 experience requires an Android 12 bootloader. I have not kept up with the custom roms lately because when I purchased my Oneplus 8, the fingerprint reader did not work in the several custom roms I tried. I went back to a rooted stock and was satisfied that I could get what I needed done. Accidentally, my phone updated to Android 12, but I was able to retain root. Unfortunately, the most recent update has rendered my phone without root.

Also, I was under the impression that the [11.0_r55] designation in the thread title implies this is an Android 11 rom. Please inform me if I am wrong.
 

optimumpro

Senior Member
Jan 18, 2013
7,414
14,767
OnePlus 8
Because I do not know, I would like to know why OOS-11 is required in both slots?

One would assume that an Android 12 experience requires an Android 12 bootloader. I have not kept up with the custom roms lately because when I purchased my Oneplus 8, the fingerprint reader did not work in the several custom roms I tried. I went back to a rooted stock and was satisfied that I could get what I needed done. Accidentally, my phone updated to Android 12, but I was able to retain root. Unfortunately, the most recent update has rendered my phone without root.

Also, I was under the impression that the [11.0_r55] designation in the thread title implies this is an Android 11 rom. Please inform me if I am wrong.
Because OOS-12 does not support custom roms. It's not just bootloader, but about 20 other firmware partitions. If you read any custom rom's thread, Android 11 and 12, this is what they all say: OOS-11 in both slots is required.

My rom is Android 11, but as I just said, the requirement is the same for custom 11 and 12 roms.

People should read install instructions and not assume anything. Otherwise, they get into all kinds of trouble. 99.9% of those are self-inflicted.
 
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crashfly

Senior Member
Oct 7, 2009
70
12
Because OOS-12 does not support custom roms. It's not just bootloader, but about 20 other firmware partitions. If you read any custom rom's thread, Android 11 and 12, this is what they all say: OOS-11 in both slots is required.
So what leads you to that conclusion that OOS-12 does not support custom roms?
I do not accept statements without something backing that statement up.
And the thread right below this one {[ROM][12.1]CherishOS-3.7[UNOFFICIAL][Oneplus 8][05.14.2022]} does not mention anywhere in its first post about requiring Android 11. Please keep blanket statements like "this is what they all say" from making your statement false.


This rom looks interesting, but I will instead look at an Android 12 rom.
 

optimumpro

Senior Member
Jan 18, 2013
7,414
14,767
OnePlus 8
So what leads you to that conclusion that OOS-12 does not support custom roms?
I do not accept statements without something backing that statement up.
And the thread right below this one {[ROM][12.1]CherishOS-3.7[UNOFFICIAL][Oneplus 8][05.14.2022]} does not mention anywhere in its first post about requiring Android 11. Please keep blanket statements like "this is what they all say" from making your statement false.


This rom looks interesting, but I will instead look at an Android 12 rom.
You should ask that person as to why he didn't put it into his instructions. I don't know. Maybe because he is not a developer, it's not his rom, and he simply compiled it. That's the difference between official and unofficial roms. In the latter case, the compiler has no control over the rom features. Or he just assumed that everyone knows that OOS-12 doesn't support custom roms.

I do my own development and I know that OOS-12 firmware is not usable with custom roms, and I tell my users they need OOS-11 in both slots to install my rom, and so do other developers whether Android 11 or 12. But again, virtually everybody, who ever complained about running into installation problems, did that to him/herself by failing to read instructions.

Best regards.
 
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cjvzla

Senior Member
Apr 25, 2011
309
27
OnePlus 8
Hi, want to dirty flash latest release but when i type adb devices on the cmd window, my device show up but it says unathorized, will this affect the result when i type adb sudeload rom? i don't want to soft brick so i rather ask
 

optimumpro

Senior Member
Jan 18, 2013
7,414
14,767
OnePlus 8
Hi, want to dirty flash latest release but when i type adb devices on the cmd window, my device show up but it says unathorized, will this affect the result when i type adb sudeload rom? i don't want to soft brick so i rather ask
That won't prevent sideloading, but if you want, you can always authorize your PC in Developer options.
 

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  • 3
    Does the ROM support Magisk 25+? I flashed the latest version and installed Magisk 24.3, but it says Magisk not installed rather than already activated like the post said. I extracted boot.img, patched and flashed back, it says Magisk and Zygisk enabled, but LSPosed Zygisk module is not working. Installing Magisk 25.0 or above will cause the Magisk app to just hang at splash screen. Not sure what I did wrong...
    Flashing magisk 24.3 via twrp worked for me. Just saying
    2
    June 7. New release V-21:

    1. June security patches
    2. Android r56
    3. Automatic sleep/suspend mode (scheduled by a user) in Settings/Battery
    4. 'Internet permission missing' issue with several apps fixed. Now, all apps including Googleplay, as well as third party apps, have no problems connecting to the internet (no F/C)

    Download in post #3.
    2
    are you planning to move to oos12 anytime soon sir?
    Name one Android 12 rom that doesn't have at least one problem listed below:

    Reboots, black screen, UI freezing, lack of Volte (in many countries there is no longer 3G coverage), low call/mike/speaker volumes, overheating, faulty scrolling, lack of features (compared to 11), buggy proximity sensor, buggy automatic brightness.

    Android 12 is a fluke with a slightly updated UI.
    1
    Does the ROM support Magisk 25+? I flashed the latest version and installed Magisk 24.3, but it says Magisk not installed rather than already activated like the post said. I extracted boot.img, patched and flashed back, it says Magisk and Zygisk enabled, but LSPosed Zygisk module is not working. Installing Magisk 25.0 or above will cause the Magisk app to just hang at splash screen. Not sure what I did wrong...
    1
    crDroid 8.5, almost perfect.
    I sincerely believe that Jaguar would be the same or better
    Almost doesn't cut it for me especially when I rely on native call record.
  • 8
    TELEGRAM CHANNEL ADDED: HERE
    TELEGRAM CHAT GROUP: HERE

    VERSION 19 FIXES SAFETYNET PASSING (WITH MAGISK 24.3)
    See detailed instructions here


    You can actually use alarm when the phone is OFF. It would boot 2 minutes before and trigger the alarm on time

    This is official build of Jaguar Rom.

    I have been building Android roms since 2012 for various devices including multiple Sonys, Lenovo Zuk, Oneplus 3, Oneplus 5 and Oneplus 6. You can check my Oneplus 6 or
    Oneplus 6T threads and browse my profile.

    Jaguar rom is focused on hardening of AndroidOS and kernel. As such, the rom has hardened bionic, art, framework and tightened security.

    1 Rom control with custom Power options, Statusbar, Buttons, Navbar, Quicksettings, Lockscreen, Notifications, Gestures, Themes etc...

    2. Heavily modified Art, Bionic System/Vold and System/Security

    3. Telephony response to Type Zero sms ('silently acknowledged') disabled

    4. Toggle to disable Captive Portal logging.

    5. Speakerphone proximity sensor toggle - could be set to automatically switch to speaker when not at the ear

    6. IMEI and phone numbers hidden in About menu

    7. Built-in encrypted DNS providers, such as: Cloudflare (US); LibreDns (Germany); AdguardDns (Cyprus); and PowerDns (Netherlands)

    8. Wakelock and Alarmblocker

    9. Fully working Call recording with the button visible in Dialer

    10. A choice between the latest Bromite and Vanadium webview

    11. Deskclock app modified to work with PowerOn alarm. The app will boot the phone 2 minutes before scheduled time to trigger the alarm on time

    12. Default Dark mode

    13. All regular customizations plus. You tell me which feature is missing.

    14. Prebuilt Magisk 23. You don't have to flash it, just install the attached Magisk.apk.


    Bugs: AOD working, but no info shown on lockscreen (works fine on other Onepluses)

    Install instructions

    1. Install Jaguar recovery via fastboot: reboot in fastboot and execute the following commands on your connected PC terminal:

    Code:
    fastboot flash recovery_a recovery.img
    fastboot flash recovery_b recovery.img

    2. Download the rom to your PC. Boot the phone into recovery, set recovery for sideloading, then type on your PC terminal (which should be opened in the same directory where you had downloaded the rom):
    Code:
    adb sideload 'name of the rom'

    3. Factory reset and reboot. You are done. If you want root, just install Magisk manager (apk) as a normal app.

    PICO Gapps has been tested successfully with this rom.


    All downloads are in post #3.

    All subsequent releases will be in post #3

    XDA:DevDB Information
    JAGUAR R, ROM for the OnePlus 8

    Contributors

    optimumpro

    Kernel Source Code: HERE

    ROM OS Version:
    11.x R
    ROM Kernel:
    Linux 4.x
    ROM Firmware Required:
    no lower than Android 11
    Based On: AOSP/Lineage/DirtyUnicorn/Crdroid

    Version Information
    Status:
    Stable
    Current Stable Version: See post #3
    Stable Release Date:
    2021-01-26

    Created: 2021-09-29
    Updated: 2022-06-07

    Credit: AOSP, Lineage, DU, Crdroid, GrapheneOS, CalyxOS Bromite webview
    7
    The rom could be used on locked bootloader (donate feature) with or without Gapps.

    The benefits of LOCKED BOOTLOADER combined with WORKING AVB-2 protection are:


    Get your DRM L1 certificate back. Most banking apps (if not all) will work with or without Magisk: you cimply get a warning 'your devices is rooted', but you can proceed to login

    Security: Nobody and nothing can modify Kernel, Recovery and Virtual Partitions without triggering a red screen of death with the message 'your device is corrupted and cannot boot'.

    At that point, the only option is to unlock bootloader. But, if a user had previously disabled OEM unlock in Developer settings, then unlocking becomes unavailable, and so does flashing via fastboot. In other words, if your phone gets into the hands of an adversary, their only option is to use MSM tool to make the phone work again, but no access to your data or any other partition.

    Why prebuilt Magisk? Because you can't modify kernel or recovery on locked bootloader post installation, and that's exactly what Magisk does.


    Also, see some screenshots attached:
    5
    November 3, New release V-14

    1. November security patches
    2. Android r49
    3. Updated vendor blobs
    4. Ambient display sensor fixed
    5. Snap camera replaced with Open Camera

    Download in post #3.

    P.S. To those who complained they couldn't find 'double tap to wake' toggle:

    Earlier, I posted a screenshot of my Oneplus 8 (not 8 Pro or T) that clearly showed the feature. Moreover, just to make sure, I did a clean flash of the latest release, and the feature appears in Settings/Display between 'Lockscreen' and 'Wake on plug'.

    So, if you still have a 'no show', that's not the rom, but addon(s) you've installed. Or, you used TWRP to restore data (TWRP is utterly incapable of restoring data without corruption) or a version of Gapps or Xposed or Magisk addons: you should know better which one... .
    5
    October 20. New release

    1. Built from scratch in a separate environment from other devices to get rid of conflicts.

    2. Clean-flashed on my own Oneplus 8: everything seems to be working

    Download in post #3.
    4
    March 23. New release.

    1. From now on there will be 2 versions of the rom Full and Vanilla
    2. Updated kernel, which includes Spectre 2 implementations
    3. Updated icons for Display calibration

    Download in post #3.