I have 2 Xoom tablets, in Germany, and I took the SD Card from one of them to put it on a new phone, the Tablet kept working fine until last week that I forgot to plug it and the battery ran out. When I charged it and started it, it didn´t work again, I got the Encryption message, nothing happens when I click the Reset Tablet either, I tried putting the SD card from my other Xoom but still nothing. I enter the Recovery mode and did a Factory Reset and the tablet was OK.
Battery run out again yesterday and got the same problem once again, but now factory reset is not working, tablet stays stuck at the "M" logo after doing it, I have repeat the operation a zillion times and nothing, it stays on the M. Plus I can´t turn it off either.
The model is the MZ604 and Android Version 4.0.4
I connected the xoom to the computer after installing the drives but it won´t recognize it. I got to do the fastboot and flashed motorolas images but nothing. I can´t do the adb reboot bootloader command because ADB won´t work, because I don´t have USB Debbuging checked, but I can´t check it now because I can´t get to settings (
What can I do to recover the tablet?
Anyone, is driving me crazy, no matter how many time I flash new images it always stays on the original, so I can´t flash any special recoveries either
I tried RDS too and after the reboot stays the same in the M logo, nothing changes. What can I do?
No ideas? :crying:
I want to save the tablet if possible.
Hi, could you explain exactly what you've tried?
In particular what you mean by "I got to do the fastboot and flashed motorolas images but nothing." and "no matter how many time I flash new images it always stays on the original, so I can´t flash any special recoveries either"
By flashed Motorola's images do you mean you flashed the stock images?
And when you say you flash new images but it always stays on the original, I assume you mean the recovery stays as Xoom default?
Let me know and I'll see if I can help.
alecbond said:
Hi, could you explain exactly what you've tried?
In particular what you mean by "I got to do the fastboot and flashed motorolas images but nothing." and "no matter how many time I flash new images it always stays on the original, so I can´t flash any special recoveries either"
By flashed Motorola's images do you mean you flashed the stock images?
And when you say you flash new images but it always stays on the original, I assume you mean the recovery stays as Xoom default?
Let me know and I'll see if I can help.
Click to expand...
Click to collapse
Yes I mean stock images, and yes, it always stays on Xoom default, it never changes no matter which Recovery image I flash.
The recovery is likely reverting to default because the Xoom does this automatically each boot.
We might be able to give you a recovery that stays put but the booting issue may or may not be something worse.
Being able to fix the recovery in place is reliant on adb working from recovery itself, which I'm unsure is possible.
Whilst you seem to have reasonable knowledge of flashing and using adb/fastbbot, I'll give full instructions.
I assume you have the necessary files for fastboot so I'll skip that.
Place your chosen recovery image in your fastboot folder. (I recommend ClockworkMod Touch recovery from here)
Hold shift and right click the folder containing your recovery image and fastboot files, then select 'open command prompt here'
Your PC is now setup for the fastboot process.
Connect your Xoom to your PC.
Power on your Xoom and once you see the Motorola logo, wait about 3 seconds, and press volume down.
The screen should show the Motorola logo in the center and '--> Android Recovery' in the top left.
Press volume down twice more until the top left says fastboot then press volume up.
The screen will say 'Starting Fastboot protocol support'
Now on your PC, in command prompt run the following:
fastboot flash recovery xxxx.img
Rename xxxx.img to whatever your recovery .img file is namedOnce verified, reboot by holding Volume up and Power. (Keep connected to PC and keep command prompt open)
Again, when you see the Motorola logo wait about 3 seconds and hit volume down. You should see 'Android Recovery' in the top left corner, now press volume up to enter recovery, you should now see your flashed recovery.
This is where I'm unsure. Try running the following:
adb remount
adb shell mv /system/recovery-from-boot.p /system/recovery-from-boot.p.old
adb shell mv /system/etc/install-recovery.sh /system/etc/install-recovery.sh.oldIf you are able to run this, this will rename the files that are reverting the recovery to default and prevent it happening again. If not, we can go ahead with attempting to flash stock images anyway.
To flash stock images download Build H.6.2-24 for Retail Europe (found here.)
Extract the files to your fastboot folder.
Again, reboot your Xoom, either by holding volume up and power, or from recovery.
And again, after about 3 seconds press volume down 3 times until the top left says '--> Fastboot' then press volume up.
Now run the following from command prompt:
fastboot flash boot boot.img
fastboot flash system system.img
fastboot flash recovery recovery.img
fastboot flash userdata userdata.img
fastboot erase cache
fastboot oem lockThis will wipe all data on the Xoom, and hopefully reset it to stock.
Finally, run:
fastboot rebootand you should boot into Android 3.2(?), fingers crossed.
If you require further clarification or help let me know.
alecbond said:
The recovery is likely reverting to default because the Xoom does this automatically each boot.
We might be able to give you a recovery that stays put but the booting issue may or may not be something worse.
Being able to fix the recovery in place is reliant on adb working from recovery itself, which I'm unsure is possible.
Whilst you seem to have reasonable knowledge of flashing and using adb/fastbbot, I'll give full instructions.
I assume you have the necessary files for fastboot so I'll skip that.
Place your chosen recovery image in your fastboot folder. (I recommend ClockworkMod Touch recovery from here)
Hold shift and right click the folder containing your recovery image and fastboot files, then select 'open command prompt here'
Your PC is now setup for the fastboot process.
Connect your Xoom to your PC.
Power on your Xoom and once you see the Motorola logo, wait about 3 seconds, and press volume down.
The screen should show the Motorola logo in the center and '--> Android Recovery' in the top left.
Press volume down twice more until the top left says fastboot then press volume up.
The screen will say 'Starting Fastboot protocol support'
Now on your PC, in command prompt run the following:
fastboot flash recovery xxxx.img
Rename xxxx.img to whatever your recovery .img file is namedOnce verified, reboot by holding Volume up and Power. (Keep connected to PC and keep command prompt open)
Again, when you see the Motorola logo wait about 3 seconds and hit volume down. You should see 'Android Recovery' in the top left corner, now press volume up to enter recovery, you should now see your flashed recovery.
This is where I'm unsure. Try running the following:
adb remount
adb shell mv /system/recovery-from-boot.p /system/recovery-from-boot.p.old
adb shell mv /system/etc/install-recovery.sh /system/etc/install-recovery.sh.oldIf you are able to run this, this will rename the files that are reverting the recovery to default and prevent it happening again. If not, we can go ahead with attempting to flash stock images anyway.
To flash stock images download Build H.6.2-24 for Retail Europe (found here.)
Extract the files to your fastboot folder.
Again, reboot your Xoom, either by holding volume up and power, or from recovery.
And again, after about 3 seconds press volume down 3 times until the top left says '--> Fastboot' then press volume up.
Now run the following from command prompt:
fastboot flash boot boot.img
fastboot flash system system.img
fastboot flash recovery recovery.img
fastboot flash userdata userdata.img
fastboot erase cache
fastboot oem lockThis will wipe all data on the Xoom, and hopefully reset it to stock.
Finally, run:
fastboot rebootand you should boot into Android 3.2(?), fingers crossed.
If you require further clarification or help let me know.
Click to expand...
Click to collapse
Thanks for the info, sadly I have done almost all that, I can´t use adb commands because I never allowed the tablet to do USB Debbuging, since I wasn´t doing anything that needed that and never thought I would need it. I think I didn´t kept the tablet connected to the PC, so I will try again and let you know if it works.
Like I said before, I'm unsure whether it'll work as I'm not an expert.
However, you may find this helps:
Whilst in recovery and connected to your PC, open Device Manager, find your Xoom, usually under 'Other devices'.
Then right click on your Xoom > Update driver software... > Browse my computer for driver software > Let me pick from a list of device drivers on my computer > Pick your Xoom (either one if there's two shown)
Windows should confirm the driver installed then adb should work in recovery.
I believe ClockworkMod Recovery enables USB debugging anyway, through modifying default.prop
I'd recommend trying the above, and/or if that fails for any reason download Motorola USB Drivers here.
Thanks again but nothing works, I tried rebooting being connected to the PC and the same thing happens, the default recovery from the Xoom stays there, fastboot shows on the command Prompt and in the tablet that everything went ok and the new image was flashed but the rebooting kills it, and I can´t use any ADB commands because of the stupid USB Debugging, if something like this can happen, Motorola should have left it open from default or at least have a fail safe in case something like this could happen. RDS also flashes an image but when it rebbots the whole thing goes to hell, it stays on the damn logo with the same images. I think I can throw the tablet to the trash :crying:
Unless its a serious hardware issue, I wouldn't trash it! It clearly has life as you're able to successfully flash and such.
I'd recommend having a look at the FAQ.
alecbond said:
Unless its a serious hardware issue, I wouldn't trash it! It clearly has life as you're able to successfully flash and such.
I'd recommend having a look at the FAQ.
Click to expand...
Click to collapse
Thanks, but I have done everything, what is the good thing of a successful flash when the tablet returns to it´s previous state as soon as it reboots?
Plus I can´t use one of the most important things, adb, because of the usb debugging, I can´t get into the tablet to activated it, and even if there are recoveries which bypass this thing, I can´t flash them into the tablet, well I can, they just aren´t there after the reboot. And all this because the tablet run out of battery :crying:
ClockworkMod recovery itself allows the use of adb regardless of USB debugging setting.
I believe the command adb remount should allow it.
If adb is denied you can try what I said earlier
Whilst in recovery and connected to your PC, open Device Manager, find your Xoom, usually under 'Other devices'.
Then right click on your Xoom > Update driver software... > Browse my computer for driver software > Let me pick from a list of device drivers on my computer > Pick your Xoom (either one if there's two shown)
Windows should confirm the driver installed then adb should work in recovery.
Click to expand...
Click to collapse
alecbond said:
ClockworkMod recovery itself allows the use of adb regardless of USB debugging setting.
I believe the command adb remount should allow it.
If adb is denied you can try what I said earlier
Click to expand...
Click to collapse
The problem lies with the recovery, I only have the default recovery from the xoom, it doesn´t matter how many times I flash it and everything seems to work correctly, when I restart the tablet I get the default recovery. I don´t understand why this happens, command prompt and the tablet in fastboot mode tell me the recovery has been flashed, but to use it I have to reboot and when I do I always find the same good for nothing recovery.
recovery
Hello,
I don't really understand your problem with the recovery ?
When you flash a custom recovery with fast boot, you restart the tab and after 2 or 3 second you see the Motorola Logo you push the volume down
and volume up button to enter in the new recovery.
If you flash custom recovery but restart completely the TAB without manually enter in the custom recovery, each time you retrieve the original recovery.
pots22 said:
Hello,
I don't really understand your problem with the recovery ?
When you flash a custom recovery with fast boot, you restart the tab and after 2 or 3 second you see the Motorola Logo you push the volume down
and volume up button to enter in the new recovery.
If you flash custom recovery but restart completely the TAB without manually enter in the custom recovery, each time you retrieve the original recovery.
Click to expand...
Click to collapse
Here is what happens, I flash new recovery, I restart the xoom with power and volume up, when the logo appears, after 3 seconds, I push volume down, recovery option shows, I press volume up and the default recovery is still there, not the new one I just flashed.
Is really no one out there that can help? :crying:
There's nowhere stated that, however I believe you already have unlocked your bootloader, didn't you? Because it's REALLY weird that it can't flash the recovery, I mean, you left the battery run out, then after charging you wasn't able to boot normally again.
I'll think a little, but give a check if your bootloader is really unlocked, the device should have installed the recovery, and as you didn't restart it entirely (let it go after the dual core logo), the recovery should be there...
"We think so supersonic and we make our bombs atomic" - Eagle Fly Free (Helloween)
Sent from my Nexus 10 using Tapatalk HD
I have done the fastboot oem unlock command, should I do it everytime? I can´t use adb, because like I said, I never check the USB Debugging, which I have done in my other tablet now, don´t want the same thing to happen twice.
is it dead?
hgokuh said:
is it dead?
Click to expand...
Click to collapse
I unfortunately believe that yes, however I'm still thinking about it! So don't give up! As soon as I have another answer I shall post something
"We think so supersonic and we make our bombs atomic" - Eagle Fly Free (Helloween)
Sent from my Nexus 10 using Tapatalk HD
I'm kind of screwed and It's not even my mistake, I guess.
I clean flashed the Mahdi Update 25/04 yesterday earlier I had 03/03. In the morning I experienced 2 -3 random reboots and later only one random reboot after which my phone won't boot (bootloop). When i enter bootloader, it automatically selects "start" and boots into system and then reboots.
Once i got the chance and my phone booted fully. But then when I selected reboot into recovery so that i can restore a NAND. IT reboots, the team win logo shows up and then the cycle repeats.
Basically, i don't have access to recovery, my bootloader isn't stable (i.e. it automatically boots without selecting) so I'm unable to flash a stock img as of now. If and when my Nexus fully boots into system it stays the same for about 1 hr if i have any luck. PLz help.
From India. Unlocked Bootloader and custom Rom "Mahdi".
Have you tried using add to boot into recovery? If not also try to getting a logcat when it reboots, those will give us a little more of a general idea of what is actually happening.
First thing don't panic. You can't brick a nexus. You should be able to get into bootloader (volume down + power button) use Wugs Nexus Root toolkit from XDA forum. reload stock ROM in fastboot mode. I have done this lots of time. It's a draw back to being a tinkerer just can't leave well enough alone.
It sounds like your power bottom might be stuck to be honest.
Sent from my Nexus 5 using Tapatalk
nyterage said:
Have you tried using add to boot into recovery? If not also try to getting a logcat when it reboots, those will give us a little more of a general idea of what is actually happening.
Click to expand...
Click to collapse
I managed to somehow get into my bootloader and flashed the following
1. bootloader.img
2. radio.img
3. system.img
4. stock kernel (boot.img)
5. twrp recovery.img
I skipped userdata,img as i need to save my data.
I then went into recovery and did a factory wipe (not including internal storage)
My stock rom booted BUT the setup screen showed up and during the setup process it rebooted again and I couldn't mount my storage to backup.
MY MAIN PRIORITY IS TO COPY THE CONTENTS OF MY SD CARD Before flashing the whole stock image (including userdata)
Now when I type "adb version" in cmd I get Android Debug Bridge Version 1.0.31 but when I type "adb devices" whilst my phone is in fastboot mode, it doesn't list my phone. So i'm unable to "adb pull /mnt/sdcard"
I'm in the same situation with rare access to B/L (based on luck) and Recovery.
Plz tell me what to do when I am able to connect in bootloader mode (fastboot)
IF required I can upload a video showing that what problem I am facing.
scuccria said:
I managed to somehow get into my bootloader and flashed the following
1. bootloader.img
2. radio.img
3. system.img
4. stock kernel (boot.img)
5. twrp recovery.img
I skipped userdata,img as i need to save my data.
I then went into recovery and did a factory wipe (not including internal storage)
My stock rom booted BUT the setup screen showed up and during the setup process it rebooted again and I couldn't mount my storage to backup.
MY MAIN PRIORITY IS TO COPY THE CONTENTS OF MY SD CARD Before flashing the whole stock image (including userdata)
Now when I type "adb version" in cmd I get Android Debug Bridge Version 1.0.31 but when I type "adb devices" whilst my phone is in fastboot mode, it doesn't list my phone. So i'm unable to "adb pull /mnt/sdcard"
I'm in the same situation with rare access to B/L (based on luck) and Recovery.
Plz tell me what to do when I am able to connect in bootloader mode (fastboot)
IF required I can upload a video showing that what problem I am facing.
Click to expand...
Click to collapse
To use adb pull you have to enter the recovery. You need universal naked usb driver 0.73 to make adb work in recovery. If you are on windows 8 or 8.1 you have to turn off the driver signiture enforcement befote installing the universal naked usb driver 0.73
Tapatalk-kal küldve az én Nexus 5-el
El Daddy said:
It sounds like your power bottom might be stuck to be honest.
Click to expand...
Click to collapse
I agree. It's a malfunctioning power button due to several reasons (moisture, drops, etc.). I had this on my Nexus S.
So my OnePlus One started dying when I would still have about 10% left. I thought it might be a bug or something with he CM12 nightlies so I wanted to revert back to stock. I transferred all of my media to my comp, got the 64gb zip from the "Revert back to 100% stock" thread, plugged my OnePlus One in, went into fastboot mode, made sure my comp recognized my phone ("fastboot devices") and clicked the "flash-all.bat" or whatever (not on MY comp right now, don't know the exact name) aaaaand some crazy stuff happened.
My phone started rebooting constantly, back into fastboot mode. This isn't how it worked with my Nexus 5 but the command window looked like it was doing what it was supposed to do. Then it got to sending the "system" and FAILED saying the file was too large. My phone rebooted and now it doesn't get past the first splash screen with the 1+ logo and "powered by android"
When I try to get into the bootloader nothing happens, but sometimes I get into the "Cyanogen Recovery" which I've never seen before. I wish I could take a screenshot and post it. It's options are:
Reboot system now
Apply Update
Wipe data/factory reset
wipe cache partition
wipe media
If I could get into fastboot mode I think I would be fine, but I can't.
When I go to "Apply update" I have the option to "apply from adb" and do the adb sideload thing, which I'm not very familiar with.
I think I might be in trouble, could anybody help me?
Is adb working while in recovery? It should. Try using the adb reboot bootloader command.
Transmitted via Bacon
Try pressing Power + Volume Up until your phone boots into fastboot mode and then run flash-all.bat again. If it is not working again, boot to fastboot mode and do all the steps by hand.
Purchased an Lg Gpad 7 Wifi tablet (v400) 2 weeks ago. Came with preinstalled Lollipop android so i couldnt install a recovery rom to flash any other custom roms. Downgraded to Kitkat version following the instructions on Xda forums and succesfully installed Twrp. When i installed Cyanogenmod 12.1 through Twrp i got stuck in fastboot screen.
Any suggestions and / or solutions would be greatly appreciated.
I had a similar problem.. Only mine was stuck at the bootloader. Go in TWRP and repair /data and other partitions. My data partition gave me an error since F2FS is a little flaky and some ROMs corrupted it (claimed they supported it). I would recommend erasing the system, cache and data partition if you can't get into TWRP.
The problem is i cant get out of fastboot whatever i try. It says start on bootloader but the tablet just restarts on an empty screen doing nothing.
Hakalai said:
The problem is i cant get out of fastboot whatever i try. It says start on bootloader but the tablet just restarts on an empty screen doing nothing.
Click to expand...
Click to collapse
if you have an sd card, try removing that, then reboot.
if that doesnt work, try entering fastboot command, fastboot continue
Tried without sdcard and i get the same fastboot screen.
How can i give any commands? The only options i have are Restart Bootloader / Restart / Power off. Tried restarting bootloader but i get nothing in return tablet just stays on with nothing on screen.
Hakalai said:
Tried without sdcard and i get the same fastboot screen.
How can i give any commands? The only options i have are Restart Bootloader / Restart / Power off. Tried restarting bootloader but i get nothing in return tablet just stays on with nothing on screen.
Click to expand...
Click to collapse
you said it was stuck on fastboot, if thats the case, install any needed drivers on your pc, connect device to it, open a terminal in the fastboot dir (after you go get fastboot), then try those commands i gave. you could also try, fastboot reboot dont think i mentioned that before.
bweN diorD said:
you said it was stuck on fastboot, if thats the case, install any needed drivers on your pc, connect device to it, open a terminal in the fastboot dir (after you go get fastboot), then try those commands i gave. you could also try, fastboot reboot dont think i mentioned that before.
Click to expand...
Click to collapse
Did as you said but every command i gave gives me an error message in adb terminal. There are new lines in fastboot menu in tablet now. Bottom two are SECURE BOOT - enabled & LOCK STATE - locked.
Hakalai said:
Did as you said but every command i gave gives me an error message in adb terminal. There are new lines in fastboot menu in tablet now. Bottom two are SECURE BOOT - enabled & LOCK STATE - locked.
Click to expand...
Click to collapse
hmm, ok, im guessing it would have said that normally, when not broken. all the command does is try to release it past where its stuck. it doesnt actually flash, lock, unlock, or change anything.
imo, this seems good, because now we know fastboot is working.
i own lg devices, but not your specific device. i would hate to give you some bad advice and make your tablet broken more, but if it were me in this situation, i would try to flash the factory KK firmware you used to downgrade with odin or however you did it. hopefully, that will clean everything up and let it boot properly.
if for whatever reason you cant do that, we could try extracting the factory file, and just flashing recovery and system, those should be the only things that got changed putting on twrp and cm normally.
Sorry, I have the serious proplem wtih my LG pad V400, I rooted it and using <LG Flash Tool 2014> with <V40010c_00.kdz> to downgrate the firmware but their is error then my LG pad stuck in fastboot menu as with just turn off, restart and restart bootloader. if i seclect one one them the tablet just logged again the fastboot menu
it stuck on the fastboot menu and i cannot do nay think with it. I can restart with factory restore mode but when select yes to restore, it will restart and log in fastboot menu again.
I downloaded adb and fastboot program and put in one folder <Minimal ADB and Fastboot> in C:\Program Files (x86)\Minimal ADB and Fastboot
I dont have recovery image so i download file <cm-13.0-20160421-NIGHTLY-v400-recovery.img> form your link to download TWRP file
move it to folder of fastboot programe and changed its name to <recovery.img>
I turn on the tablet and it waited at fastboot menu
when i run the command <fasboot flash recovery recovery.img> and they said some thing wrong like in picture
please help me
I've got a three day old Inn tablet that I tried to root according to the directions in this thread: https://forum.xda-developers.com/t/...0015685-series-root-and-cfw-linux-os.4195577/
The command fastboot --disable-verity --disable-verification vbmeta vbmeta.img returns an error saying "unknown command --disable-verity"
I have tried reflashing the stock boot.img, vbmeta.img, vbmeta_vendor.img, and vbmeta_system.img I downloaded from that same thread and I have tried the boot.img I patched with magisk.
The message I get on startup is either the orange state if the bootloader is unlocked or "bad state. Your device has failed verification and may not work properly. Please install boot image with correct signature or disable verified boot".
SP Flash Tools will not work on my laptop. The laptop is up to date and is working right, it runs Windows 10.
I have tried installing twrp to the recovery partition but it makes no difference. I was not able to back up anything from the tablet at all.
I have the back cover off. The only way to stop the bootloop is to unhook the battery.
EDIT: This tablet is brand new and came with Android 11 preinstalled. I had no personal stuff on it to lose, but I do have a similar, smaller Onn tablet that I *do* use some and would like to root once we figure this out.
How do I disable verified boot on the 100003562? Does someone have a vbmeta file they are willing to share that has the verified boot disabled already? If that's not possible, how do I restore the stock, non rooted ROM so it'll at least work?
Yes re-flashing tablets's Stock ROM to get rid off of all modifications you applied so far is best.
Flashing a Stock ROM typically is done by ADB Sideload method.
Will it work without being able to boot into recovery mode? That bootloops also, but I can get it into fastboot mode with no problem. The image I downloaded from here appears to be a recovery zip of some type. It's where I pulled the boot.img from that I patched with Magisk.
I don't have anything that was in the stock ROM in that particular tablet, just the stock ROM downloaded from this site. from that same model of tablet. I have considered picking up an identical one and trying to copy the ROM from it, but I'm not going to risk rooting a second one if I can't get this first one done.
There's a different file linked to later in that guide, I'll try it because I may have the vbmeta files from a totally different tablet. The file I just grabbed is at https://drive.google.com/drive/mobile/folders/1KG6IIULGfxVXM9msuaWMUvO8Vs9ih-w0?usp=sharing , later in the guide I used to root the device.
I'm not sure how to do the ADB sideload. I'm thinking it's "ADB sideload <filename>, not sure though.
I'm not near the tablet ATM.
If phone stucks into a bootloop then ADB Sideload won't work because a stable USB-connection isn't given.
There's a flash all command in fastboot. Will that help?
OK. I had a soft brick due to Android Verified Boot. I have it running the stock unrooted ROM, will try later to root Onn later.
WARNING WARNING WARNING
Some of these tablets are shipping with Android 11
"fastboot --disable-verification --disable-verity flash vbmeta vbmeta.img" does NOT work on these devices. This is a command to disable Android Verified Boot.
YOU WILL SOFT BRICK THE DEVICE if you flash a magisk patched ROM through fastboot without first disabling the Android Verified Boot. It is possible to recover so Read Onn.... (pun intended).
There are certainly other ways to root this tablet and I am all ears to hear them.
END WARNING
I have, in the past, revived devices that appeared to be hard bricked. Most devices these days have an emergency boot block. The Onn 100003562 is no different. During a bootloop, it allows access to the filesystem at certain times. Enter SP flash tools and a known good image of the ROM, including the initial scatter file.
The newest version of SP flash tools is more busted than my tablet was. Get an older one from 2020. Get ADB and fastboot.
Now grab a PC and make a folder in the root directory called ADB. Extract ADB and fastboot into it. The rom image you downloaded should have a scatter file in it, make sure that gets into the ADB directory with everything else.
This is with Windows 10 in mind, but may work on UbuntuMATE 18.04 from my Toughbook, I think the directory there is "home". Get the tablet into fastboot mode (vol up + power), connect it to the PC with a USB cable, then type in
"fastboot flashing unlock"
and press Vol Up on the tablet to confirm. Next
"fastboot reboot" and if it's going to bootloop, it'll do that now.
If you want better control over the tablet, flex it slightly and insert a spudger into the crack that'll form on the side between the device's plastic frame and back bathtub panel. Gently remove the bathtub and locate the jack where the battery connects. Voila, you can stop the bootloop by removing the power!
Get the tablet to start bootlooping. A good way is to either hit the power key or get it into fastboot mode (hold volume up, press power, and hold til the bootloader shows up) then "fastboot reboot".
Unzip the ROM files you downloaded into the ADB folder. Set up SP flash tools and open it (mine requires double clicking the flash.exe file). Click the Format tab and click both "Auto Format Flash" and "format flash except bootloader"
WARNING: do NOT format the bootloader!!!
Wait for the tablet screen to go dark and then hit "start". This will erase everything except what I call the emergency boot block. You should hear the PC ding every few seconds while the tablet is powered up and physically connected to it. The tablet screen will not light up at all for now. Fastboot mode will be inaccessible.
Now on SP Flash Tools, click "Download" and click "choose" on the line with the scatter loading file. Navigate to c:\ADB or Home:\ADB and click the file. If you put the scatter file in another directory, navigate there instead and click it. The scatter-loading file line will populate. Just below it is a checkbox next to "name", uncheck it and ensure ALL the checkboxes are empty in the spreadsheet below that. Check the box next to "boot".
Your PC should still be singing, this means the tablet is bootlooping and searching for a command right after it reconnects electronically to the PC every few seconds. Wait for the USB connected sound then hit "download". The boot.img file will be written to your tablet but it will still continue to bootloop. Fastboot will still be inaccessible.
Go back to SP Flash Tools and check the box next to "name" at the top of the spreadsheet. All the boxes will be checked that you have files for in the ADB directory (or wherever you extracted them with the scatter file). Wait for the USB connected sound, then hit download. Grab a beer or go use the restroom, this will take a few minutes.
When it's done SP Flash Tools will display a message stating such.
Charge the tablet if necessary then press the power key. Bam, no Orange or Red state warning. The white One logo will appear for a few seconds, disappear, and be replaced with the shiny Onn animation. This first boot will take several minutes, so finish up the beer while you wait.
If all is well you should be looking at the inroductory screen. Walk through setup, enable developer options, enable bootloader unlocking, and try whatever it was you were doing again.
I see this forum and our devices as an opportunity to learn. I hope I have been helpful with this, and if I there's something wrong or that can be done better, by all means, post it.
Have a fantastic day!