EDIT: Problem is solved. Issue was an old BIOS version. After flashing to 2.02 it does work. Don't know why dual boot was working before though.
Hey guys,
I've got a Teclast X98 Air 3G for repair here which is giving me a hard time. First of all: I flashed tons of those devices already, so I know what I am doing.
So here is the issue:
I am unable to restore dual boot on this C8J6 model, which has been lost after trying to re-install Windows. Usually it is very easy to do this: Restore the Android, afterwards boot the tablet from a WINPE stick along another NTFS stick containing the factory restore image for Windows. Well, exactly this is what does not work. I can flash Android and Android does boot. However, Android is the only thing that boots on this tablet. The dual boot menu does not appear anymore. If in Android I select "boot to Windows" it just reboots to Android. If I boot up with Vol+, it still does only boot to Android. If I select my WINPE stick in the BIOS (boot override), the screen goes black for a short time and then I am back inside the BIOS menu. This also happens with a pure Windows 10 stick that boots flawlessly on any other device.
I tried the following things to fix this but without results:
- Flash Mirek V7 using the entire 64GB storage and then restore the original partition layout
- Flash the official Android 5.0 image
- Flash the originale Android 4.4.4 image the tablet shipped with
None of these procedures brought back the ability to boot any other OS than Android.
Now my last hope is that someone of you guys has an idea on how to get rid of this issue.
Cheers,
Chris
Related
Hello,
I've recently bout this tablet Air III and I've immediately put the new bios on to make it dual boot with windows. All went fine and I had Android + Windows on it. Few days ago I did a factory reset on Android and for some reason it didnt work properly - it got stuck on "Erasing" with a little droid logo (I even left it once overnight, thinking that it might be taking a lot of time to finish). To fix that, I've decided to reflash just Android, using Mirek's tools. It all went well (at least according to the tools), but now when I boot the tablet, Teclast logo is displayed for about 5 seconds and then a black screen and nothing happens. Again, I've tried waiting for hours on that black screen, nothing happens.
Does anyone have any idea what seems to be the problem?
You might try resetting the BIOS to defaults, after that entering into DnX-Mode and make a clean flash of Mireks ROM? (Which Air III - version do you have? 32 gb (M5C5) or 64 gb?)
kelebek said:
You might try resetting the BIOS to defaults, after that entering into DnX-Mode and make a clean flash of Mireks ROM? (Which Air III - version do you have? 32 gb (M5C5) or 64 gb?)
Click to expand...
Click to collapse
I tried all of that already, no effect sadly. I have 32GB - M5C5
Sounds like you've flashed the wrong BIOS.
You should be able to use the DNX flash tool to flash a new BIOS. If not then you'll have to reprogram/replace the BIOS chip on your device.
cscz23 said:
Sounds like you've flashed the wrong BIOS.
You should be able to use the DNX flash tool to flash a new BIOS. If not then you'll have to reprogram/replace the BIOS chip on your device.
Click to expand...
Click to collapse
Have you got any advice on how to flash a new bios and what tools to use? All the guides I could find required being able to boot into Android first.
arczi19 said:
... All the guides I could find required being able to boot into Android first.
Click to expand...
Click to collapse
You should find solutions on how to flash the BIOS from fastboot- as well as from DnX-Mode.
I have already tried almost all BIOS versions even with Flash programmer attached to the tablet, but I end up in a bootloop every time. When accessing the BIOS Setup it seems to be right, but I can't save any configuration, nor do I see the attached flashdrive.
Originally it used to be an Android only Air iii without 3g (C5Jx), after installing Mireks Rom it was running ok first, then I started tinkering around with Dual Boot a couple of weeks ago.
What am I doing wrong? I can't even get back to the ANDROID only state, since it won't boot. If I install with Mireks Installer, it ends up the same.
You should flash the original BIOS first, it will show that the tablet working fine yet or not.
The only dual BIOS I can flash (with or without EEPROM Flasher) is version 1.00
As soon as I try another higher version it either stays in a bootloop or seems to be hardbricked without any functionality.
Is it a common issue with M5C5 (32GB)?
hi
yesterday, i decide to reinstall everything on my tablet.
So i downloaded mirek v.7.
I installed mirek with repartionning.
i also install bios 2.05.
i switched off the tablet as written in the flash tool.
I reboot, enter the bios and decide to install w10. So i boot on the usb flash drive.
it boots, and bam " your pc encounter a pb, need to restart : more info : acpi bios".
But....
it never reboots. it is off. No way to turn it on again. I let the tablet for the night. I try to push the power button for 4 sec, 10sec, but nothing. I tried to charge the tablet, but nothing.......
So....do you think the tablet is "bricked" ?
i'm not capable of opening it and flash with eeprom or something....
So, good to the trash ???
what's wrooong ????
:crying::crying:
A friend sent me his KF HD that was bootlooping. He's had it forever running a custom rom. I was able to repair and get Lineage 14.1 loaded with Nano GAPPS. All was working fine until I attempted to flash SuperSU.zip in TWRP.
Current situation -
- bootloop on KF orange logo (will NOT continue on to blue TWRP version of logo)
- able to access fastboot with factory cable
- fastboot commands work correctly
- KFFirstAide won't fix it (manually ran the various menu items since the dropbox links are all no longer working)
- KF Java Utility (with the bootloop fix buttons) won't work
- KFHD SRT (tried 3 versions) all run, but won't fix
- pretty much scoured all of these forums for any fixes - boot images, recovery images all load correctly
Things I've noticed - formatting of partitions fail, and it almost looks like they are corrupt in some instance and have lost their type (example EXT4 for userdata)
He doesn't have a backup of his stock partitions before he originally rooted and loaded a custom ROM.
Is there anyplace I can download stock partitions to re-load one at a time until I can figure out which one is borked? Anyone else have any other ideas? PLEASE don't just respond with 'try KFFirstAide'. Been there, done that, doesn't work.
Hello, I have a big problem.
I have installed Lineage OS, no problem for the installation, the ROM works fine, but but I wanted to come back to Android 4.4.2 with the firmware flash. Since that moment, the tablet starts on a BIOS and I can no longer access the Recorvery, I have an updater binary error when I flash firmware with a TWRP session. I deleted /System and Internal Storage to see if I could reflash afterwards, but the damn BIOS is still there.
(By the way, if I leave the tablet plugged into the BIOS, will it load?)
Do you have any solutions, someone would have been there at some point?
I look forward to your answers.