yashsingh1/xdaforums huggingface dataset:
[General Topics] mrdukes:
To be honest I'm not totally sure what a file images I need I know the SN on the device is it MD 220-7ap 13017033 I don't know which version I need or what tablet just up and stopped working and said it couldn't be trusted so just as a little project I wanted to see if I could get it going again so maybe some information files in a couple pointers to help me thank you
[General Topics] Viva La Android R.I.P.:
Ok. So it appears you have the Gen 2 model with Android 12 (Go Edition), and the MD variant. Out of curiosity, are you not having any success with restoring the firmware using any of the flash tools outlined in this guide? If you don't mind doing so, give me a brief summary of your issue and the methods you have tried to restore the firmware. I'll try to assist you in getting your tablet functional again.
[General Topics] mrdukes:
Everything I have tried has failed. Either from error in flash tools or bad downloads of firmware. Even expired empty links. I've got a few devices I'm trying to work on, from this free tablet that just crashed out of the blue to a android headunit. Mostly it's finding a good workable firmware.
[General Topics] Viva La Android R.I.P.:
There are no bad links in this thread. All firmware is direct from the manufacturer's software support servers, signed, and verified via md5 checksum. All flash tools and drivers also have good links. The firmware package you need is:

Scepter8_Tablet_v01_20220915

Be sure you have that package downloaded. Use the PhoenixUSB Pro flash too. Be sure to install the Allwinner drivers. When you have the firmware downloaded and the flash tool set up, let me know. I'll walk you through flashing. How have you managed to get bad downloads? Is your internet connection reliable?
[General Topics] mrdukes:
Awesome thanks buddy I'm not sure what happened then I downloaded the firmware a couple times and it kept saying that it was invalid. And then the flash tool or Phoenix USB it would get to like 20% and then fail and for some reason I have a hard time with the all winter drivers as the Android head unit that I'm trying to get running again is also all winter chipset
[General Topics] bencinilife:
Here is the Scepter8_Tablet_v01_20220915 it's zipped

Off topic question lol does anyone know of a good source for unlocking my network on my galaxy ultra 22 at & t ? Would be great 👍
[General Topics] Viva La Android R.I.P.:
Indeed I know a great source for legit network unlock codes. Is yours AT&T contract or prepaid?
[General Topics] bencinilife:
Mine is AT&T it's contract.
[General Topics] Viva La Android R.I.P.:
This vendor on eBay has100% positive feedback. I've personally purchased network unlock codes from him on two occasions, both successful.

Unlock AT&T Code Samsung Galaxy S23 S22 S21 S20 Ultra 5G and Apple Iphone13 12.. | eBay

Find many great new & used options and get the best deals for Unlock AT&T Code Samsung Galaxy S23 S22 S21 S20 Ultra 5G and Apple Iphone13 12.. at the best online prices at eBay! Free shipping for many products!

www.ebay.com

It'll set you back close to $8 bucks. Message him first. Give him your IMEI/MEID and get confirmation that his unlock codes will work on your device.
[General Topics] bencinilife:
I found best for mine when using USB pro was to hold volume up and then tap few times fast power button while holding Volume up and the while still holding up on volume I paused for a second and repeated and bam
[General Topics] bencinilife:
I'll do that I'm currently working on a hack but no go as of yet haha. But most definitely will do
[General Topics] Viva La Android R.I.P.:
Hacks and user-end mods are definitely preferred over paid services. I do believe that MiracleBox is a working hack on the AT&T S22 Ultra. But, you need a dongle to use the software.
[General Topics] bencinilife:
Even a new cable. The software and prosses works that he posted
[General Topics] Viva La Android R.I.P.:
Yes, the button combo while connecting the tablet to the PC pretty much forces the device into FEL flash mode. It is by far the best way to initiate FEL and firmware restoration on PhoenixUSB Pro.
[General Topics] mrdukes:
To my knowledge, u can't unlock the bootloader with att. I tried with my girls phone and it didn't end well
[General Topics] mrdukes:
There is no link sceptre file .....
[General Topics] Viva La Android R.I.P.:
I'm not referring to the bootloader. I'm referring to the network.
[General Topics] Viva La Android R.I.P.:
All the links work fine.
[General Topics] Viva La Android R.I.P.:
@mrdukes what link are you not able to access? All the links for firmware, drivers and.flash tools are working properly to the best of my knowledge. But if you're having trouble with a link, let me know so it can be remedied ASAP.
[General Topics] bencinilife:
Any luck on the twrp ? And I would love to know more about the Lineage rom install process.
[General Topics] mrdukes:
I downloaded the 4.0 when I extract it everything comes out as a MSI file and I can't use it so I tried the next one down on the list and that one I can't get the device to recognize like it recognizes in device manager but the program itself you never says device connected
[General Topics] bencinilife:
Make sure you read all the process and confirm what serial # you have. All details have been tried and true. If need be reread each thread and check your boxes to confirm your going the right way and proper steps
[General Topics] mrdukes:
Yeah for some reason now the tablet won't screen won't light up I obviously it's got some kind of power because it's being recognized and Device Manager but I can't see anything on the screen
[General Topics] bencinilife:
If you are doing the right combo as needed or even the way I explained by holding down volume up and connecting to tablet then while holding Volume up tap power repeatedly the software will take over and start processing install
[General Topics] mrdukes:
Yeah I'm sure but like I was saying I think there might be something wrong with the tablet now cuz no matter what if I leave it on the charger for a couple hours plug it in it's weird it'll recognize in the device manager but the screen doesn't light up at all so I'm wondering if somehow the screen went out which considering it's been sitting in a drawer for months not sure how that would happen
[General Topics] Viva La Android R.I.P.:
Yeah that does sound like a hardware issue Witt the display.
[General Topics] bencinilife:
Need to upload pictures of your process even device manager so we can see where things are going wrong. Pictures pictures lol
[General Topics] bencinilife:
Viva you sure it's not just him using wrong firmware?
[General Topics] bencinilife:
Have even been able to use usb
[General Topics] Viva La Android R.I.P.:
It's certainly possible. But even with a mismatched or incompatible firmware installation, the display should not be completely unresponsive. In other words, Allwinner tablets are not susceptible to being hard bricked. I've never seen nor heard of one being hard bricked. But anything is possible. I agree with your post that he needs to post a photo of Windows Device Manager while the tablet is connected. Once it is determined how the tablet is being recognized, the cause of the issue should be manifest.
[General Topics] bencinilife:
Couldnt agree more. And I know just because

I know just because the device manager recognizes doesn't mean it's on and ready to boot. He definitely needs to send Pic. Will help narrow things down
[General Topics] Viva La Android R.I.P.:
Agreed. If it's being recognized strictly by way of FEL mode, it's likely bricked. On the other hand, if it's showing up as MTP or a USB debugging protocol, the display is likely the culprit.
[General Topics] bencinilife:
Viva have you got any farther on the twrp ? And would love to know more about the LineageOS
[General Topics] Viva La Android R.I.P.:
If you want to install LineageOS, or any other GSI-based custom ROM, you'll need to familiarize yourself with Project Treble. I'll post a link to the Treble forums here on XDA for your reference. The forums include tutorials, FAQs, links for dozens of GSI custom ROM builds, and tons of info regarding the concept of Project Treble. On the Scepter 8, the only custom GSI ROM I've tried is LineageOS 19.1. In theory, however, there are dozens of custom distributions that should work on this tablet. You don't need TWRP to install a GSI ROM; fastboot mode will suffice. If and when a stable TWRP becomes available for the Scepter 8, I will start a dedicated TWRP thread.

Here is a link to the official Project Treble forums: https://xdaforums.com/c/project-treble.7259/
[General Topics] JovialQuestion:
There is going to be something wrong with it if your unwilling to look into the possibility of it being a issue we are trying to have you diagnose as we cannot see it. Not being rude or mean to you but I keep seeing you dismiss peoples ideas targeted at assistance for you so if you keep telling yourself the tablet is the problem and failing to double check anything. you will inevitably never get to the issue. Android is not perfect when Modifications are being made. When you unlock a bootloader and try to flash software there is always stupid small things that you will not see in the moment and feel stupid when you realize it's so simple of a fix or a extremely difficult fix. Android and all software is like a cruel prankster. So please don't dismiss people like that when they are trying to help you find the answer with the same knowledge as you. That's what this form is for. No one has been given the golden key from the manufacturer and all fixes are temperamental and a work around. If you can uninstall all the drivers or boot a new windows entirely and start over as the only thing I can duplicate is incomplete or incompatible drivers and a Low Batter as it doesn't charge in bootloader or recovery and this will cause a blank screen with recognition until it charges.

How To Charge Android Phone In Fastboot (Bootloader) Mode?

My Android Phone Is Not Charging. Bootloader Shows The Warning Battery Low. I Accedentaly Erased /Boot /Recovery /System Partition. And Because Battery Is Low I Can Not Flash Boot.Img And Recovery....

android.stackexchange.com
[General Topics] JovialQuestion:
Any vanilla build I have tried has worked on this lineageOS with GMS is the only one I've been able to boot with Gaps. I also flashed a Google VBmeta from the beta 12 GSI on Google's website to accomplish that tho so idk of that matters but saves from having to disable verification and verity.
[General Topics] mrdukes:
Not dismissing anyone. Willing to try whatever. Sorry if you took it that way. Was simply stating that upon getting the PC ready to try what he had told me to, and I noticed that it wouldn't turn on. Or screen wouldn't light. Didn't dismiss anyone. Simply said what it was doing. Wouldn't light up but was still recognized in device manager. For me to dismiss someone would insinuate that I even knew what I was doing. This stuff interests me I want to learn. I'll gladly take guidence and suggestion. I came to this forum for help and a few were kind enough to not blow me off and assist me. I'm grateful and listening. Wanted to practice on this one as I have a android headunit that's stuck in a boot loop that's been kicking my ass. So no I'm not dismissing anyone. I'll give it another shot and I'll attach some pics of what it does so those who want to assist can see what I'm dealing with and tell me what next. Thank you guys
[General Topics] Viva La Android R.I.P.:
With your tablet connected to your PC via micro USB to USB-A data sync cable, right click on your Windows Start icon and select Device Manager. Can you post a photo reflecting the manner in which your PC is recognizing your tablet by way of Windows Device Manager? Thanks.
[General Topics] JovialQuestion:
I would also like to add. Under the three buttons for volume and power. On mine there is a small pinhole. After pulling back the housing there is a fourth button on the pad that when I press it instantly reboots the device like a hard reset button. A paperclip lightly pressed or preferably something plastic "it's a small little piece of fragile aluminum for the button" might be of use..
[General Topics] mrdukes:
I totally get it. No worries. Sometimes hard to stay up with what's going on here. But as far as the device itself... Was new out of the box. Played on it for maybe a day or two went to turn it on and it only had a message that said this device is corrupted and cannot be trusted and wouldn't boot up since then. So it's been sitting in a drawer for quite some time and like I said I'm trying to fix a Android head unit and so I figured I could use this as practice tried messing with it couldn't get it to recognized reinstall the drivers it recognizes in the device manager just by it installs but it won't recognize in the program to flash it and it doesn't matter I left it plugged in to the wall for a full day came home and it still wouldn't turn on so I'm wondering if the battery itself is shot or if there's a screen issue. Or like you said maybe it's stuck in some mode now. Nothing has ever been transferred to it or flashed to it more than just the idea of it in my head. So the whole thing is still stock it's just being a cheap little piece of ****
[General Topics] JovialQuestion:
The corruption and cannot be trusted is only going to appear if someone unlocked the bootloader. I guess it's just throwing me off a little as I don't know anyway it would appear unlocked and give that boot delay screen. The device has to be plugged into a device or PC with ADB and Fastboot to unlock the bootloader and the developer settings to allow the OEM unlock switched. If during normal use the device failed usually you can factory reset in recovery without any issues and fastboot is really only needed when making modifications or unbricking with OEM images. Did you buy chance look to see what the device showed up as in device manager as In what exactly does it say the device name is? Or device type? If left in a drawer it is entirely possible pressure was applied to the screen and it is broken internally without visible defects. A flashlight is usually helpful looking for defects in the digitizer and if the LEDs stopped a flashlight would reveal the display if it's working at all. "ON SOME DEVICES". Can you find the device name that showed up and confirm if it's getting a ADB connection or fastboot by sending the command adb devices and fastboot devices the response will say a device serial number or nothing at all. It could be in fastboot if the screen is off or even recovery and this device in recovery will output on adb devices (089970)device-unauthorized or authorizing
[General Topics] JovialQuestion:
That error is only a delay in boot tho. The power key will pause the boot. However 5secomds after the pop up the device will start to boot.
[General Topics] bencinilife:
Sounds great thank you
[General Topics] mrdukes:
Sorry for the delay. Been kinda hectic around here. So I just now turned on the laptop and plugged it in. Made the ding sounds of new device almost right away. Here are some pics of device manager. It's pulling up a tplink phone, and a unknown device. See attached pics. Had the tablet on the charger for some time before I hooked it up but still not a flicker of light from the screen. No button combos I have tried do anything either. So unsure of my next step.
[General Topics] mrdukes:
Used flashlight on screen. Looks fine to me. Tried and devices ... Comes up nothing. Tries fastboot devices.... Gives me a error. In device manager. . The unknown device... Says no drivers are installed. Device instance path is ISB\VID_1F3A&PID_EFE8\5&244C2DA1&0&4. physical device name... \DEVICE\USBPDO-7. ..
[General Topics] mrdukes:
Ok so I right clicked on unknown device. Update driver. And just selected the whole folder to where I downloaded everything from this thread. It picked up the all winner driver. Boom screen came on. Phoenix suit was running in back ground. It picked up and did a firmware update. Tablet is in the set up stages now. Super slowly though. SUPER. So I'm taking it it's not bricked anymore. And I should be good to tinker with it? Try a new rom or something?;something different something fun. Or is there anything else that I'm needing to do.
[General Topics] Viva La Android R.I.P.:
Glad to hear the firmware flashed. Now that your tablet is restored, your may want to achieve root access. With root, you can permanently remove any bloatware, preinstalled services you don't use, and tweak your kernel parameters to do things like change the default CPU scaling governor, optimize RAM management, change I/O scheduler presets to boost responsiveness, etc.

Because this tablet is Treble supported, there are a number of prebuilt GSI custom ROMs you can install and test. I've only used a LineageOS 19.1 GSI ROM, but it performed quite well. You'll need to read over the tutorials and guides on the official Project Treble forums here on XDA to learn how to install GSI ROMs. You don't need TWRP; everything can be done using fastboot commands. I'll get you a link to the forums.

Project Treble XDA Forums

I'll be doing some how-to guides on GSI ROM installation on the Scepter 8, as well as a guide on optimizing and fully debloating the stock OS. Free time is what I need to get those tasks done, but I am presently too busy with work to contribute much on XDA.
[General Topics] mrdukes:
Yes please. Exactly what I wanted to do. Get some practice in with this unit. Then I can fix my headunit. Then once I'm more comfortable with it. I'll try my phone. Yea these sceptre are slow. Mine is a snail. I appreciate all your help.
[General Topics] bencinilife:
You can unlock bootloader without adb. Instead in developers go to about and software info and tap the build version 7 times. Back up one and go to system and then developers the check oem unlock
[General Topics] mrdukes:
Yea that's what I did. Now to just fine a Rom and is to try out
[General Topics] Viva La Android R.I.P.:
That doesn't unlock the bootloader. And no, you cannot unlock the bootloader without fastboot command execution. Enabling the OEM Unlocking feature in the Developer Options menu merely sets the oem_unlockable flag to allowable, so that you can then use fastboot to unlock the bootloader. Otherwise, when trying to unlock the bootloader, fastboot will reject the command. As stated in my instructions on unlocking the bootloader, you do need to enable OEM Unlocking in Developer Options, but that is only the first step. To actually initiate the bootloader unlock flow, fastboot mode is required.
[General Topics] Viva La Android R.I.P.:
You need to use fastboot to unlock your bootloader. That is the only way to unlock it.
[General Topics] JovialQuestion:
That doesn't Unlick the bootloader. You still need to send the command to unlock tho correct? This will require Adb_fastboot. Ignore me. I see this was answered on the following page. Lol. Thought I was at the end 😔
[General Topics] mrdukes:
Well I got the firmware flashed it is operating. But now I cant connect adb
[General Topics] JovialQuestion:
Developer options and enabled USB debugging. Then while at the home screen plugin to PC and send command adb start-server it will pop up and ask you to auth the PC to use adb. You need to use this in command prompt in windows by either opening a file browser navigate to a folder your going to put any .IMG to send to the device and either right click while holding shift on the folders root and open a command window or click file and open a command prompt or shell command window. Provided you have adb installed on your pc

Or following the developer settings menu for wireless debugging you can pair a wireless adb by adb pair Displaed IP followed by pin shown just make sure your adb supports pairing with that command

You need to enable developer options by going to about device under settings and clicking on the build number seven times. Then go into the systems menu. You will see a new developer options menu. Enable USB debugging or wireless debugging whatever you choose. If you're going to use ADB in recovery you're going to want USB as wireless does not work in recovery. Go to the home screen and plug in the device running the command ADB start-server. Then after you authorize type in the command ADB devices. Your device should be displayed. When you're in the bootloader mode it's going to be fastboot devices you can get to this by typing the command ADB reboot bootloader. Or recovery by ADB reboot recovery
[General Topics] JovialQuestion:
Just ensure that your computer has installed all of the device drivers for ADB from my understanding this happens automatically when you plug the device in and leave it for a moment with USB debugging enabled the ADB bridge will be installed.
[General Topics] mrdukes:
Trying this. No go. Won't connect
[General Topics] mrdukes:
Won't connect with the app either
[General Topics] JovialQuestion:
Via WiFi? Both devices are on the same network and tried with QR and Ip - Pin combo. Your also trying to connect to the right up and port as you have to do this after pairing as the port is not the same as pairing. . if you cannot get a wifi adb connection. I would boot to recovery with key combo power volume up from off and factory reset. Or do this with the menu in your device. Log out all Google accounts. Do a reset and if after the reset your not able to. I'm going to assume there is a software issue. Most likely this is a bad cable. A bad USB. A bad adapter or just a glitch that a reset can fix. Of course try new Cords and seeing if fastboot can get a connection as well as recovery by selecting apply update from adb and checking connected devices. I know the cord that came with a few I've seen were always bad for data so I'd start there
[General Topics] JovialQuestion:
Also make sure USB mode of the tablet is either no data transfer or try media transfer or file transfer and switch it back and forth to try and nudge the connection if it's just lagging activating adb. Can you transfer files via USB?
[General Topics] mrdukes:
Ok I was able to connect through scanning a qr code with the app and wireless adb. Phone to tablet. But laptop won't see it
[General Topics] JovialQuestion:
Your laptop probably has the wrong ADB interface drivers then. So nothing is wrong with the software. Your adb may also not support ADB pairing. Do you have a OTG cable? To connect your tablet to the device with the app on it? Also did you try going into bootloader or recovery to see if your laptop sees the devices. Check the same device manager you went to before to see unknown device and see if a device called ADB Interface or Mass storage is appearing. I would try to reinstall the driver for adb and uninstall the update you did to flash it. Of course try some different cables before those steps. As the cable is almost always the culprit with ADB. Drivers are usually second provided they are installed. I do know the software to flash the device does interfere sometimes with it so uninstall the tools you used to flash and reboot your PC after these changes.
[General Topics] mrdukes:
I just used the app on my phone. I tried bootloader and fastboot on the laptop didn't see it. Nothing pops up in the device manager. It IS a different cord so I'll try that. And I didn't actually install any of the flashing software just ran it from the extracted folder. Never prompted to install. I tried reinstalling the 15 sec adb didn't do anything. Also what commands am I trying for exactly for root and to unlock. So I will tryba diff cable