yashsingh1/xdaforums huggingface dataset:
[Android General] 13lack13ox:
Lots of tweaks it doesnt run too bad just removing bloatware. Would be cool to get your params on your tweaks etc. If you ever got time could you post it up? Maybe the rom you were talking about in another post has all that included? Anyways if not no biggie, this thing is just for playing around on.
[Android General] Viva La Android R.I.P.:
Absolutely. I'll list those for you here in just a little bit. I have a pure stock ROM built with a TWRP installer, but my TWRP has run into a snag. I've reached out to TeamWin for guidance on that.
[Android General] 13lack13ox:
All in good time, man. Just glad someone with knowledge is doing all this. Wish I could help more. My ability to program and compile is equivalent to stick poking. I've done it once with aosp 6 that was awhile ago.
[Android General] Viva La Android R.I.P.:
You seem to know your way around the Android OS pretty well. I'm a developer in training myself. Learning every day. Yeah AOSP 6, I still love working with the Marshmallow builds.

Ok first things first. I notice a huge performance boost from some kernel level mods. Here is a link to Kernel Toolkit. Install both APKs. https://mega.nz/folder/QYwA0QTA#O_Zg3h_iVkHOdeyU_yOmLw

First go to the CPU heading and change the scaling governor to Ondemand. Under CPU Governor Params, tap on Performance Profile and select Maximum Performance (you may personally want to scale back to Aggressive or Balanced, depending on your need for battery life). Now, close Kernel Toolkit and restart the app. Next go to the I/O heading. Choose kyber as the I/o scheduler and set the read ahead buffer to 512 KB. Go down to ZRAM and increase to the maximum of 1000 MB. Set Swappiness to 100. Go over to the Profiles heading, create a profile will all settings and give it a name recommended from the list. When complete, tap on the profile, select save settings and then apply settings.

Now go to the menu button in the upper left of the app. Go down and enable Apply Settings on Boot. Select All and set a 5 second delay.

Next, download a build.prop editor from Play Store. There are tons of free ones and any will suffice. Make a backup of your system/build.prop before you tweak anything. Open the editor and grant root permission.

For build.prop edits, locking your launcher into memory helps a lot with responsiveness. Add this line to system/build.prop

ro.HOME_APP_ADJ=1

This basically prevents the launcher from being killed by Android's native LMK.

To increase touch responsiveness, add these lines as well.

debug.performance.tuning=1

video.accelerate.hw=1

Disable the boot animation for faster boot time.

debug.sf.nobootanimation=1

Reboot to enable the tweaks.

Give these a try and let me know your feedback. I'm working on a few more mods to optimize this tablet and I'll keep you posted on those as well.
[Android General] 13lack13ox:
Thx great changes so far. Yeah more "snappyness" for sure. I'll have to play around and open up as much as i can swap around.

I can't change I/O scheduler though, I get a contact developer message.
[Android General] Viva La Android R.I.P.:
Yw. Do you notice a decent improvement?
[Android General] Bubba The Hack:
And that would be the Vol-Down button.
[Android General] Viva La Android R.I.P.:
Thanks @ScarletWizard. I'll fix it. I'm always grateful to have somebody proofing my work. No time to do it myself these days.

Update. Filename has been corrected.
[Android General] Viva La Android R.I.P.:
Ok. So you likely need to disable verity manually.

Extract vbmeta.img from the firmware image. Save it to your ADB/fastboot directory on your PC. Boot into fastboot mode and connect the tablet to the PC. Open a command window in the fastboot path and execute these commands:

fastboot --disable-verity --disable-verification flash vbmeta_a vbmeta.img
fastboot --disable-verity --disable-verification flash vbmeta_b vbmeta.img
fastboot reboot

Many times with Android 11 & 12 builds, regardless if verity has been disabled directly within the boot.img, the above process has to be followed with vbmeta.img in order to correct boot looping. I'm going to try and complete the rooting instructions for the Android 12 Go Edition model sometime tonight. I'll provide download links for vbmeta.img.and the boot.img from the Android 12 GE firmware package.
[Android General] Viva La Android R.I.P.:
Use this tool:

Allwinner ImgRePacker Tool

Extract and save this on your Windows PC. Double click runner.bat. Drag and drop the firmware image onto the interface and hit Enter. Type smt and hit Enter. Numerous .fex files will be extracted to a separate directory on your desktop. For example, boot.fex is the boot image and vbmeta.fex is the vbmeta image. You can use a file manager to rename the file extensions to .img to convert the .fex files to .img files.
[Android General] Viva La Android R.I.P.:
Always works for me. But try one of the other two tools. Some members report better results using one particular tool in lieu of the others.
[Android General] Viva La Android R.I.P.:
@ScarletWizard here is the vbmeta.img extracted from the Android 12 GE firmware with build number V01_20220711.

vbmeta.img 01_20220711

But refresh my memory here. Yours is the Android 11 GE variant, correct? Also, which boot.img did you flash in fastboot?
[Android General] Viva La Android R.I.P.:
I truly appreciate the gesture but I don't ask for donations nor am I comfortable receiving donations. The open source spirit of Android guides my conscience to never accept monetary gain for assisting others with the hobby I love the most. Thank you nonetheless. You are most gracious for offering.
[Android General] Viva La Android R.I.P.:
Did you get the vbmeta.img I linked to you? Download it and follow the fastboot instructions I posted earlier. This should bring you out of the loop and get you booted up. I appreciate you following these instructions. If this works -- and it definitely should -- you will have given the confirmation I need to complete the instructions for rooting the Android 12 GE variant. That's worth more than a donation to me.
[Android General] Viva La Android R.I.P.:
No need in reinstalling the 15 Second ADB utility. Just follow the steps in my INSTALLING USB DEVICE DRIVERS section of this guide, starting with Step 4. The drivers on these Allwinner tablets are problematic for everybody in terms of persistence. I often have to manually update the device drivers as well when using fastboot mode.
[Android General] Viva La Android R.I.P.:
Okay no worries. Do this: restore your firmware to its factory state. While you're doing that I'm going to be updating the instructions with the exact steps in the proper order. I should be finished by the time you're restored. I think the problem you're having has much to do with doing the steps in one session, uninterrupted, versus the separate steps we've tried here.
[Android General] Viva La Android R.I.P.:
Yeah I just had a Lenovo gaming laptop crash due to the latest AMD Adreno GPU drivers. I have to format the SSD and reinstall Windows 11 from scratch. I'm working on an older Toshiba laptop for the time being. Slower but gets the job done.

But yes, definitely try the rooting procedure again once I get the instructions posted. I have no doubt it will work without issue. I appreciate you troubleshooting this for me. I have the older variant and can't test things for the new model on my own .
[Android General] Viva La Android R.I.P.:
The only difference is build dates. One has a 20220627 build date while the other has a 20220711 build date. You can use either package, but it's always preferable to use the newest one.
[Android General] Viva La Android R.I.P.:
Instructions are now updated to include rooting the upgraded Android 12 Go Edition tablet variant.
[Android General] Viva La Android R.I.P.:
Yeah that's my guide lol

I added new firmware to the downloads section today. Hot Pepper Mobile sent me firmware build V02_20220726 earlier today, based on Android 12 Go Edition.

Pay ample attention to my section titled INSTALLING USB DEVICE DRIVERS. Device recognition issues are common with Windows, so if you run into such issues, go back to that section to troubleshoot and manually update your device drivers using Windows Device Manager
[Android General] Viva La Android R.I.P.:
Okay instead of the 15 Second installer, use a utility called Minimal ADB & Fastboot v1.4.3. A Google search will yield several sources for it

The Scepter 8 doesn't have a /cache. The dedicated /cache partition was done away with the introduction of A/B seamless updates.

In fact, here's a link:

Minimal ADB & Fastboot v1.4.3
[Android General] Viva La Android R.I.P.:
@ScarletWizard, did you have any luck? I just got a new Android 12 Go Edition Scepter 8 and achieved root by the same steps I have posted in the OP I can confirm the steps fully work.
[Android General] Moxiipc:
The steps work I did it myself a long time ago take a look at my posts for answers to issues you may have come across.

Viva I'm looking forward to your thread about installing lineageos on this tablet.
[Android General] Bubba The Hack:
Restoring windows? Just to flash some firmware? Wow, what a lot of work. It is so simple to create a bootable cd of Linux and boot off that. I'm just saying.
[Android General] Viva La Android R.I.P.:
Yeah definitely restore to full stock first and then you should be able to achieve root access. Any of the three Android 12 GE firmware builds will suffice with restoring your tablet. I posted a new method for PhoenixCard in my firmware restoration thread, which allows you to restore your tablet using a micro SD card which has been burned with a firmware image. If you encounter any device recognition issues while using the other methods, PhoenixCard is the ideal solution.
[Android General] Moxiipc:
I just used the standard adb at Here.
[Android General] Viva La Android R.I.P.:
Only Windows restorations are supported in the firmware restoration thread. Post in that thread if the subject matter is relevant to firmware. This is the bootloader unlocking and rooting thread

Here's a link for running LiveSuit on Linux.

GitHub - linux-sunxi/sunxi-livesuite: All in one repo for the LiveSuit tool, to take some of the pain outof using this.

All in one repo for the LiveSuit tool, to take some of the pain outof using this. - linux-sunxi/sunxi-livesuite

github.com
[Android General] Viva La Android R.I.P.:
If you got errors you are having driver issues or missing a step All 4 methods work. Myself and 2 other members have tested them
[Android General] Viva La Android R.I.P.:
You don't need fastboot to use PhoenixUSB Pro. It flashes via FEL mode, from a powered off state. As you correctly pointed out, unless your driver's are properly installed, the tool won't work
[Android General] Viva La Android R.I.P.:
The drivers you need for PhoenixUSB Pro are known as FEL/BROM drivers. You can install those without fastboot mode working. I'll try to find you a link for a the Allwinner FEL standalone drivers. You won't need Device Manager either
[Android General] Viva La Android R.I.P.:
I'm not finding an auto-installer for the Allwinner device drivers. You'll need to install these drivers manually, and you will need to use Device Manager. You will not need to have the tablet connected.

https://allusbdrivers.com/allwinner-a100-usb-driver/

These drivers will suffice for both variants of the Scepter 8. Instructions are included in the link .
[Android General] pandemonium613:
Hello all,

So I'm brand new here, and I'm a noob when it comes to rooting. However, I have this scepter 8 tablet, and it's absolutely garbage! The lag and crashes are terrible, and this is after a factory reset. I'm trying to root it so I can get rid of bloatwear and maybe learn how to over clock it. But from what I'm reading you need a computer to unlock the bootloader. Is that the only option? Or can I do it directly from the tablet? I have magisk downloaded and the file renamed to zip so it can be flashed. Is there any steps I can take? Please let me know any advice. Thank you
[Android General] Viva La Android R.I.P.:
You must have a laptop or PC in order to unlock the bootloader. The procedure requires command line execution via fastboot. The exact steps you need to take are clearly outlined at the beginning of this thread. Likewise, once the bootloader is unlocked, you'll need a PC or laptop in order to flash the Magisk patched boot image to attain root. In short, you will need a computer for unlocking the bootloader and rooting this tablet. A Linux, Mac or Windows machine can be used. This guide, however, focuses on a Windows based setup.
[Android General] Viva La Android R.I.P.:
The PhoenixUSB Pro and other Allwinner flash tools work on restoring bricked tablets. You cannot hard brick an Allwinner device. It's believed to be virtually impossible. They have hardware embedded boot ROM protocols. The proprietary flash tools are made to restore soft bricked tablets. In order to hard brick an Allwinner device, it would have to be unable to boot into boot ROM mode (FEL mode). Because FEL mode is hardware embedded, it cannot be corrupted on the user end. Hence, it can't be hard bricked by the user.
[Android General] Viva La Android R.I.P.:
Yes I've quoted myself many times because you keep insisting the Scepter 8 can be hard bricked beyond the possibility of recovery with the Allwinner flash tools. I assure you it cannot. No matter how bad you corrupt this tablet, it can be recovered by the flash tools listed in the firmware restoration thread. If you have issues with persistence with the flash tools working every time, it's almost certainly related to missing or improper drivers. Did you use the new Allwinner driver installer I recently listed in the firmware thread? If not you should give that a try. It should resolve your issues with PhoenixUSB Pro working every time.
[Android General] Viva La Android R.I.P.:
Correct . You implied hard bricked. Your post said "I bet you he bricks tablet and Phoenix USB and the other flash stock tools is not gonna work." Bricked to the point the flash tools won't work is hard bricked. I've never encountered a hard bricked Allwinner. I won't say it's completely impossible, but certainly highly rare. I'm pretty destructive sometimes when it comes to corrupting flash memory. If it can be hard bricked, my luck would do it. Haha

I do commend you @ScarletWizard for helping these guys out that are in need of laptops. That's a generous gesture indeed. Hats off to you.
[Android General] LilithJezebel:
Okay so I think I missed the 2nd instruction to enable developer options and screwed things up...I hope not beyond repair. I can still get to the green guy, so there's that.

I am stuck in a loop when trying to power on, where the device says it can't check files for corruption, and to re-lock the bootloader. But when I try to re-lock with adb it is not working. Please help?
[Android General] Viva La Android R.I.P.:
No worries. You can't hard brick an Allwinner tablet. You will need to visit my firmware restoration guide and flash your tablet to its stock factory state, then retry unlocking/rooting again from scratch.

https://xdaforums.com/t/guide-firmw...e-restoration-upgrading-guide.4412585//unread
[Android General] LilithJezebel:
I have been on this one trying for a good while now, but I can't find the Allwinner download link?? And nothing is happening when I try flashing. The software (I'm using PhoenixSuit) acts like it is starting to do the firmware upgrade, but it has just been sitting there at 0 for ages now.
[Android General] Viva La Android R.I.P.:
The issue is almost certainly driver related. PhoenixSuit isn't recognizing your tablet while in FEL flash mode. Did you properly install the Allwinner USB drivers on your Windows PC or laptop? By the way the firmware restoration thread is here. https://xdaforums.com/t/guide-firmw...e-restoration-upgrading-guide.4412585//unread

You are correct that the Allwinner driver link was missing from the firmware thread. I have added that link in the downloads section of that thread. I thank you for pointing that out.
[Android General] LilithJezebel:
*sigh*

Alright I restored the original firmware and went through the process again, and I am absolutely sure I followed all directions. However, I am stuck in a loop where the tablet just keeps rebooting over and over again.

Everything seems to have gone fine with the flashing process, except this one message I saw:

Could this be the reason it is not working properly?

Disregard, I am an idiot! I did not put the Magisk apk in the right folder. D'oh!

Trying this again, I will report back.
[Android General] LilithJezebel:
UGH okay I did it AGAIN, Magisk apk in the correct directory this time, and it is STILL stuck in a loop of rebooting!! What the hell am I doing wrong?

And I also have another issue now...it is constantly rebooting and will NOT turn off no matter what I do. Pushing the sim tool into the tiny hole next to power only keeps it off while it is being pushed in, then when released it starts this damn loop all over again. I can't get back to the little green guy.
[Android General] Viva La Android R.I.P.:
I will try to piece together what's going. on
[Android General] LilithJezebel:
I did manage to get it connected to PhoenixSuite again, so I have it working. The only image file that Phoenix would upgrade is MDF_AP13_20220607.img, if that helps anything.
[Android General] LilithJezebel:
Okay I finally did the setup, and somehow after restoring I have no bloatware anymore??? wtf lol this thing is haunted.
[Android General] Viva La Android R.I.P.:
Keep in mind my tablet display is busted and inoperable. So it's very difficult to troubleshoot your issue. I am calling upon any members with the latest model Scepter 8 with root to give you a hand here.

@LilithJezebel, please forgive my belated response as well. I've been rather tied up with work, but rest assured I will do everything i can to get your rooting issue resolved. Glad PhoenixSuit worked out for you.

The firmware packages I host are user-debug builds direct from the manufacturer, Hot Pepper Mobile, and are likely devoid of the typical bloatware. This is most likely why your tablet had no bloatware preinstalled after you flashed your device.
[Android General] Viva La Android R.I.P.:
I am needing to confer with any XDA member who has the latest Allwinner-A133 Scepter 8 with Android 12 Go Edition, who is presently rooted. I have a good member who needs help and I am presently unable due to no working device. I have ordered a new device but I will be out of commission until it arrives. To anybody able and willing, please leave a comment here. Thank you.
[Android General] rinnycoop121:
having an issue,

after adb reboot bootloader device is not recognized.

it says USB Developer (See photo)

let me know if anyone knows how to fix the issue.
[Android General] rinnycoop121:
What driver did you need to download?
[Android General] Viva La Android R.I.P.:
I have fixed the error on the Android 12 variant root method. A new Magisk patched boot image has been posted in the downloads section.
[Android General] Coolieo2019:
How do you update the drivers on the device. I downloaded and Installed the 15second drivers. I can't figure out how to update the drivers. Also the device says no drivers found. I have had no other issues with other devices using fastboot. But I can't make fastboot work in bootloader. Adb works just fine.
[Android General] Viva La Android R.I.P.:
There is a section in the OP titled "Installing USB Device Drivers." Start with Step 4 of that section to manually update your USB device drivers on your Windows PC or laptop. The process uses Windows Device Manager, outlined in a step-by-step format. Starting with Step 4, follow each step exactly and that should resolve your device recognition issues while connected in Fastboot mode.
[Android General] Coolieo2019:
I have tried to update the drivers but it says drivers are already installed and won't let me update or install. (Edit:) I Uninstaller then reinstalled the drivers on windows and it still doesn't recognize the device. The device was connected the whole time. So it couldn't have been that.
[Android General] Viva La Android R.I.P.:
Ok when you open Windows Device Manager with your tablet connected in fastboot mode, what does your device show up as?

The remedy to your issue is to follow my guide on "Installing USB Device Drivers," beginning on Step 4 of that section.
[Android General] rinnycoop121:
ok i got done it is rooted, any roms available for this?
[Android General] Viva La Android R.I.P.:
Sure. There are several GSI builds that you can flash, including a LineageOS 19.1 ROM that runs pretty smooth. Search the Project Treble forums here in XDA for builds and installation instructions. In fact, here's a link https://xdaforums.com/c/project-treble.7259/

Just to be clear, all models of the Scepter 8 are Project Treble supported. Moreover, you cannot hard brick this tablet; restoring the firmware using an Allwinner proprietary flash tool will almost always revive your device back to its factory stock state. So if you botch flashing a GSI ROM, no worries. Restore the firmware and start over fresh.
[Android General] freeatlast34:
so i seem to be stuck everything installed but on last reboot it says corruption cant be detected then goes black screen
[Android General] Viva La Android R.I.P.:
The cannot check firmware for corruption notification you are getting means your bootloader is successfully unlocked. That's normal, but the blank screen isn't. On the rear of your tablet, what are the first two letters of your serial number? MD or CF? Also, do you have the Android 11 Go Edition or the Android 12 Go Edition model of the Scepter 8?
[Android General] JoshMovesYa:
Is it just me or are them MEGA links to any type of the firmware files in this or other related threads broken?? I could really use the Android 12 Go version firmware, however not a single link here will provide me with that I seek.
[Android General] Viva La Android R.I.P.:
I'll be back on XDA Monday. The firmware links will be fixed at that time.
[Android General] JoshMovesYa:
Awesome!! Thank you! For your time in replying and in advance for the repairing in the linkage! 👍
[Android General] Viva La Android R.I.P.:
Which Scepter 8 do you have? Android 11 or 12?
[Android General] JoshMovesYa:
The Android 12
[Android General] Viva La Android R.I.P.:
Check your inbox.
[Android General] darkwolftech:
like a silly nube which i am to andriod and adb i used the 11 patched img and now its stuck on the bootscreen i shouldve waited til the link worked for 12 on monday right?
[Android General] Viva La Android R.I.P.:
No worries. You can't hard brick an Allwinner tablet. Check your inbox. I sent you a link to the Android 12 firmware as well as the patched boot image you need.
[Android General] Bentdish:
Ha very? ??? I have the same tablet and same issue crack in left corner no touch just finished unlocking bootloader and rooting and the crack crazy part is I have a motog 5g hahahah ..I unlocked the bootloader with a fire tablet and otg cable .. just use a USB mouse with the. Otg cable problem solved ... hope it helps...