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Teclast M89 problem installing TWRP

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By nexus856, Junior Member on 22nd January 2019, 05:03 PM
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Hi folks. As the title suggest I'm having problems installing TWRP recovery on teclast M89 tablet. I've tried a few different tutorials with no success. When I do it with fastboot it says that its installed, after that when I try to reboot the device, I'm stuck in bootloop. I've tried to do it a few times and its always the same problem. Does anyone have a solution? Thanks.
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9th February 2019, 03:45 PM |#2  
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Hello, the same for me with my M89, I'm going crazy.... Help us please!!!! Thanks!!!
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1st June 2019, 07:42 PM |#3  
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Teclast M89 TWRP 3.3.1
Teclast M89 TWRP 3.3.1

TWRP 3.3.1 for Teclast M89
The archive includes:
  • ZIP file for flashing via stock recovery
  • IMG file for flashing via fastboot
  • TWRP source code
Teclast M89 uses well-known firmware signature Android keys (test keys), that's why you can flash TWRP without unlocking the bootloader and erasing user data.
Installation instruction is inside the archive.

https://www.androidfilehost.com/?fid...31924117883832
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3rd June 2019, 02:42 AM |#4  
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M89 TWRP Worked!
Quote:
Originally Posted by ValdikSS

Teclast M89 TWRP 3.3.1

TWRP 3.3.1 for Teclast M89
The archive includes:

  • ZIP file for flashing via stock recovery
  • IMG file for flashing via fastboot
  • TWRP source code
Teclast M89 uses well-known firmware signature Android keys (test keys), that's why you can flash TWRP without unlocking the bootloader and erasing user data.
Installation instruction is inside the archive.

https://www.androidfilehost.com/?fid...31924117883832

This TWRP worked like a charm for me. I had already rooted via Magisk- but was really looking for a working TWRP for backing up before I really went crazy with mods.
Thanks so much!!
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3rd June 2019, 12:09 PM |#5  
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Quote:
Originally Posted by Jmlanner

This TWRP worked like a charm for me. I had already rooted via Magisk- but was really looking for a working TWRP for backing up before I really went crazy with mods.
Thanks so much!!

Make sure to backup nvram, nvdata, private partitions.
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3rd June 2019, 07:12 PM |#6  
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Quote:
Originally Posted by ValdikSS

Make sure to backup nvram, nvdata, private partitions.

Will do. I did bkk nvdata, will double check if I bkk privdata. again TK!
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18th June 2019, 11:28 AM |#7  
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stuck
Hi, i tried this method but couldnt boot in system, only twrp all the time. after initial install this TWRP 3.3.1, it bootlooped in twrp but storage wasnt seen in pc, so i formatted data and restarted in twrp. from there it couldnt restart system anymore. actually i managed to flash magisk 19.3 . i flased another version of twrp 3.2.3 that seemed to work fine, to see if it was the version, and it bootloops (restarts until logo) all the time. Any hint please?

It says in little print "your device now unlocked...your device will boot in 5 seconds" but restart. Cant get it into fastboot by volume up; unresponsive at all. just bootloops in logo.
Any help is very much appreciated. thanks
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22nd June 2019, 07:11 AM |#8  
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Quote:
Originally Posted by voland34

Hi, i tried this method but couldnt boot in system, only twrp all the time. after initial install this TWRP 3.3.1, it bootlooped in twrp but storage wasnt seen in pc, so i formatted data and restarted in twrp. from there it couldnt restart system anymore. actually i managed to flash magisk 19.3 . i flased another version of twrp 3.2.3 that seemed to work fine, to see if it was the version, and it bootloops (restarts until logo) all the time. Any hint please?

It says in little print "your device now unlocked...your device will boot in 5 seconds" but restart. Cant get it into fastboot by volume up; unresponsive at all. just bootloops in logo.
Any help is very much appreciated. thanks

Hi
I think you are going to have to reflash the original Rom using SPFlahtool. Then you must install Magisk Manage on tabletr. Copy the boot image from the ROM files to Your phone. Then use Magisk Manager to Patch the copied boot image. Transfer modified boot image to PC. Use fastboot to flash modified boot image back onto the tablet. The long and the short of it is - you need to find a way to patch the boot image with Magisk before any TWRP will work.
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22nd June 2019, 10:01 AM |#9  
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Right. The problem was accesing the tablet enough time as it stayed connected and recognized by pc only 3-5 secs, and then permanent unresponsive through buttons, but i used then sp flash to just flash boot, then preloader, then recovery from stock at every reboot. From there i could turn it off, It got out of the loop, and accesible to reflash whole stock rom. In the end i only flashed magisk through fastboot, as twrp is not so useful to me as no custom rom, so better no risks.
Thanks for your reply though
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22nd June 2019, 04:35 PM |#10  
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Quote:
Originally Posted by voland34

Right. The problem was accesing the tablet enough time as it stayed connected and recognized by pc only 3-5 secs, and then permanent unresponsive through buttons, but i used then sp flash to just flash boot, then preloader, then recovery from stock at every reboot. From there i could turn it off, It got out of the loop, and accesible to reflash whole stock rom. In the end i only flashed magisk through fastboot, as twrp is not so useful to me as no custom rom, so better no risks.
Thanks for your reply though

I am glad you got your tablet running again. I had originally started out with just Magisk as root also. I do like to have a working TWRP for backing up though. You should be able now to flash the above mentioned TWRP now via SpFlashtool or fastboot.
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28th June 2019, 03:52 PM |#11  
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Quote:
Originally Posted by voland34

Hi, i tried this method but couldnt boot in system, only twrp all the time. after initial install this TWRP 3.3.1, it bootlooped in twrp but storage wasnt seen in pc, so i formatted data and restarted in twrp. from there it couldnt restart system anymore. actually i managed to flash magisk 19.3 . i flased another version of twrp 3.2.3 that seemed to work fine, to see if it was the version, and it bootloops (restarts until logo) all the time. Any hint please?

It says in little print "your device now unlocked...your device will boot in 5 seconds" but restart. Cant get it into fastboot by volume up; unresponsive at all. just bootloops in logo.
Any help is very much appreciated. thanks

It seems OEM unlock fills "para" partition with some data which forces it to boot into recovery. Stock recovery reads this data and perform data partition wipe or something similar, but TWRP does not handle this data and you get a boot loop. You can fix that by cleaning "para" partition. Execute the following command while booted into TWRP, either from TWRP terminal itself or from adb shell:
Code: 
dd if=/dev/zero of=/dev/block/platform/mtk-msdc.0/11230000.MSDC0/by-name/para
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