[GUIDE] Firmwares, ROMs, CWM, Root - Acer Iconia (MTK) Tablets

Did you unlock your tab?

  • Yes

    Votes: 113 55.4%
  • No

    Votes: 91 44.6%

  • Total voters
    204
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Xmaster6

New member
Nov 6, 2011
2
0
Greetings,
I have a similar problem with my Tab Iconia A1-811. It got stucked in bootloop, so I gave up on it.
I have recently founded it in my bookcase, turned it on, and it looks that everything is still in good condition, except that software issue, so I did a bit of research on my own, and founded this thread.
After trying to install an official ROM from Acer site, I got error as if this is not ROM for this version, but on image link attached it clearly states my Tab is this exact version: A1-811_ww_gen1.
I would appreciate a lot if someone can help me solve this issue and install new ROM on it. Thanks in advance.

ibb.co/XkwfP3P
 

Moriveon

Senior Member
Jun 3, 2014
222
206
Recovery firmware for A1-811

Hello! You are trying to flash an image made for taiwanese devices, but your device seems to be made for european market.
You can download a firmware for your model from my storage, you'll need this file: "Firmware/MediaTek/A1-811/Recovery/WW_GEN1 4.4.2 RV02RC06 1.025.00.zip"
After this you can install a patch, you can either get it from the same folder in my storage (the file is called "WW_GEN1 4.4.2 RV11RC04.zip") or download it directly from the official Acer website.
 

Xmaster6

New member
Nov 6, 2011
2
0
Recovery firmware for A1-811

Thanks, that went a bit further now, but few minutes after installation has started, I got another error. Is there maybe a solution for that. Maybe I should restart my device but then I have to wait a few hours before it goes into the recovery mode simultaneously, it wont get into RC using power button + volume up at all.
This time error is: script aborted (no error message) Installation aborted:

ibb.co/QvSRKQL
 

Moriveon

Senior Member
Jun 3, 2014
222
206
This time error is: script aborted (no error message) Installation aborted: ibb.co/QvSRKQL
I'm not sure why the process fails this time. Try flashing your tablet with SP Flash Tool, you'll need a PC with MediaTek Preloader driver installed.
Get an SP Flash Tool for your tablet from my storage (look into "Software" folder), then a firmware for flashing ("Firmware/MediaTek/A1-811/SP Flash Tool/WW_GEN1 4.4.2 RV02RC06 1.025.00.7z").
After loading a scatter file, be sure to uncheck the "PRELOADER" and "DSP_BL" (if exists) partitions. Then click "Download" and connect your turned-off tablet to PC.
I recommend searching the internet for good guides or videos to understand the basic concepts of using SP Flash Tool (v3) before attempting to do anything with it.
 
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sonic2099

New member
Jun 20, 2014
2
0
Lisbon
Hi guys, so my brother has an Acer Iconia A3-A20. While looking at the Acer forums he found a thread called "OS upgrade for Acer A3 - A20" where a user stated
you must copy the zipped operating system to the memory card. then put it on the tablet and press the power and - buttons to start the installation!

But since they can't talk about firmware not supplied by Acer my question is where do I find the latest Android version for the tablet (offical and unnoficial) and do I just follow the instruction on this thread to install it?
Also tried downloading the SPFT Firmware on the first post but the link is just a white page with text and no download.
 

belov

New member
Mar 16, 2009
0
0
Yaroslavl
---------- Post added at 08:15 PM ---------- Previous post was at 08:09 PM ----------


Hi guys, so my brother has an Acer Iconia A3-A20. While looking at the Acer forums he found a thread called "OS upgrade for Acer A3 - A20" where a user stated


But since they can't talk about firmware not supplied by Acer my question is where do I find the latest Android version for the tablet (offical and unnoficial) and do I just follow the instruction on this thread to install it?
Also tried downloading the SPFT Firmware on the first post but the link is just a white page with text and no download.


I have an official firmware SDs_Acer_AV0K0_A3-A20_1.018.00_WW_GEN1.zip, but I cannot post a link due to forum restrictions ...
Remove spaces

mega . nz / folder / Yh102QqL#cZoRVp7BdcrtorhQOTm47Q
 
Last edited:
ICONIA B1-A71 UNLOCK BOOTLOADER INSTALL ALLEGRO ROM

Hey guys, so my son brought me a iconia B1A71 I've managed a root with kingroot but was wanting to unlock the bootloader, was looking for the guide for bootloader unlock and each link I go to just sends me back to the firmware thread, I guess its cos its old thread now, anyone have a guide and what I need to get this tablet, custom rom etc?

##Edit ## OK so from the archives (4pda) I managed to install custom recovery and then allegro rom.. It would appear that a developer her spat the dummy out and removed the link to unlocking bootloader in xda.
I felt like a traitor using guide from another forum. But I got the job done and have all the files on my cloud if anyone needs in future pm me
 
Last edited:

micelf01

Senior Member
Mar 13, 2007
73
2
Guys i might be a little late to the party. i just found my B1-710 and was about to throw away but thought id have one last look for a ROM. ...and WOW

Can you tell me the latest B1-710 custom rom and where to find. Im a bit of a novice
 

micelf01

Senior Member
Mar 13, 2007
73
2
Guys i might be a little late to the party. i just found my B1-710 and was about to throw away but thought id have one last look for a ROM. ...and WOW

Can you tell me the latest B1-710 custom rom and where to find.
 

micelf01

Senior Member
Mar 13, 2007
73
2
[ROM 4.1.2] Iconia B1-710/B1-A71


ACER ICONIA B1-710 / B1-A71

CUSTOM ROM

Probably this is the first custom rom for Iconia B1!

I'm not a developer so do not expect miracles! : D
I do this for fun and to make the tablet less tedious.

> Stock Android 4.1.2
> Rooted
> Clean&Light: NUDE!
> Deodex
> Zip Aligned
> KitKat UI, (Hope): I'm editing framework to give a little kitkat ui to our device
> KitKat fonts
> System apps: google now launcher, 4.4 deskclock, 4.4 fotocamera, 4.4 E-Mail, 4.4 keyboard

B1-710 download: https://mega.co.nz/#!gpQxDILA!VlHhcGvEqPHCJO-rTbMIuZ4HMl_cCTP_H950E0toTGM
B1-A71 download: Coming soon ..
Link expired. any change of a new link. B1-710
 

docnash

New member
Dec 1, 2014
1
0
Hi, i have a tab iconia B3-A40. it's a good tab for my use. The only thing is that i need to work with an app that require minimum android 7.1, and my tab have not update since android 7.0.
Do you know how to update to upper version of android? Via custom rom, or other solution?
Hope you can help me (sorry if my english is bad)
 

anthony001

Senior Member
Jun 24, 2012
212
2
guys can anyone tell me if B1-710 can be rooted and install custom rom like lineage os? if so can anyone instruct me on how to do this
 

mattori

New member
Sep 9, 2021
1
0
Hi, is there any chance for me to get this 2 firmware files for the B1-810, please? These is exactly the firmware i need and which i am looking for. Unfotunately i am unable to download them using the provided links. Maybe i am not allowed to access the server or perhaps the files or even the whole server has been deleted. Please help. Thanks
 

acerfreak

Member
May 12, 2022
20
0
Hello I have a Acer A3-A20 FHD from Germany and it has a Black Screen. So I tried using the SP Flash tool Firmware both and the Rework Secro Images are broken always Error 5054. I would like to have a Solution for that Tablets Issue. Maybe someone can make a working Rework Secro Image?.
 

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  • 36
    Acer Iconia (MTK) Tablets
    Development



    Main Contributors & Dev
    @FireDiamond @vache @Shreps

    This thread is only for Acer Iconia Tablets with MTK (MediaTek CPU/SoC)
    If you have an Acer Iconia Tab with Intel CPU/SoC (like Iconia One 8), please look at this thread : [GUIDE] Root Acer Iconia Tab 8 - One 8
    If you have an Acer Liquid Smartphone with MTK SoC, please look at this one : [GUIDE] Firmwares, ROMs, CWM, Root - Acer Liquid MTK Smartphones

    Devices supported

    Code:
              | Reco Firmware | SPFT Firmware | Preloader Unlocked | Custom Recovery | Root 
    A1-713    |      [COLOR="MediumTurquoise"]YES[/COLOR]      |      [COLOR="MediumTurquoise"]YES[/COLOR]      |        [COLOR="Red"]NO[/COLOR]          |       [COLOR="Red"]NO[/COLOR]        | ?
    A1-713HD  |      [COLOR="MediumTurquoise"]YES[/COLOR]      |      [COLOR="MediumTurquoise"]YES[/COLOR]      |        [COLOR="Red"]NO[/COLOR]          |       [COLOR="Red"]NO[/COLOR]        | ?
    A1-810    |      [COLOR="MediumTurquoise"]YES[/COLOR]      |      [COLOR="MediumTurquoise"]YES[/COLOR]      |        [COLOR="MediumTurquoise"]YES[/COLOR]         |       [COLOR="MediumTurquoise"]YES[/COLOR]       | Partial
    A1-811    |      [COLOR="MediumTurquoise"]YES[/COLOR]      |      [COLOR="MediumTurquoise"]YES[/COLOR]      |        [COLOR="MediumTurquoise"]YES[/COLOR]         |       [COLOR="MediumTurquoise"]YES[/COLOR]       | Partial
    A1-841    |      [COLOR="MediumTurquoise"]YES[/COLOR]      |      [COLOR="MediumTurquoise"]YES[/COLOR]      |        [COLOR="Red"]NO[/COLOR]          |       [COLOR="Red"]NO[/COLOR]        | ?
    A3-A20    |      [COLOR="MediumTurquoise"]YES[/COLOR]      |      [COLOR="MediumTurquoise"]YES[/COLOR]      |        [COLOR="Red"]NO[/COLOR]          |       [COLOR="Red"]NO[/COLOR]        | ?
    A3-A20FHD |      [COLOR="MediumTurquoise"]YES[/COLOR]      |      [COLOR="MediumTurquoise"]YES[/COLOR]      |        [COLOR="Red"]NO[/COLOR]          |       [COLOR="Red"]NO[/COLOR]        | ?
    A3-A10    |      [COLOR="MediumTurquoise"]YES[/COLOR]      |      [COLOR="MediumTurquoise"]YES[/COLOR]      |        [COLOR="MediumTurquoise"]YES[/COLOR]         |       [COLOR="MediumTurquoise"]YES[/COLOR]       | [COLOR="MediumTurquoise"]YES[/COLOR]
    A3-A11    |      [COLOR="MediumTurquoise"]YES[/COLOR]      |      [COLOR="MediumTurquoise"]YES[/COLOR]      |        [COLOR="Red"]NO[/COLOR]          |       [COLOR="Red"]NO[/COLOR]        | ?
    B1-A71    |      [COLOR="MediumTurquoise"]YES[/COLOR]      |      [COLOR="MediumTurquoise"]YES[/COLOR]      |        [COLOR="MediumTurquoise"]YES[/COLOR]         |       [COLOR="MediumTurquoise"]YES[/COLOR]       | [COLOR="MediumTurquoise"]YES[/COLOR]
    B1-710    |      [COLOR="MediumTurquoise"]YES[/COLOR]      |      [COLOR="MediumTurquoise"]YES[/COLOR]      |        [COLOR="MediumTurquoise"]YES[/COLOR]         |       [COLOR="MediumTurquoise"]YES[/COLOR]       | [COLOR="MediumTurquoise"]YES[/COLOR]
    B1-711    |      [COLOR="MediumTurquoise"]YES[/COLOR]      |      [COLOR="MediumTurquoise"]YES[/COLOR]      |        [COLOR="MediumTurquoise"]YES[/COLOR]         |       [COLOR="MediumTurquoise"]YES[/COLOR]       | [COLOR="MediumTurquoise"]YES[/COLOR]
    B1-720    |      [COLOR="MediumTurquoise"]YES[/COLOR]      |      [COLOR="MediumTurquoise"]YES[/COLOR]      |        [COLOR="Red"]NO[/COLOR]          |       [COLOR="Red"]NO[/COLOR]        | ?
    B1-721    |      [COLOR="MediumTurquoise"]YES[/COLOR]      |      [COLOR="MediumTurquoise"]YES[/COLOR]      |        [COLOR="Red"]NO[/COLOR]          |       [COLOR="Red"]NO[/COLOR]        | ?

    ________________

    Guides & Links

    Unlock Bootloader/Preloader + Flash CWM Guide by @FireDiamond
    Firmwares for flashing with SP Flash Tool - Generic Guide [EN][RU]
    Firmwares for flashing with SPFT GUIDE for A1-81x Tabs - [EN] thx @nikagl

    Unlock bootloader + CWM - [EN]
    Unlock bootloader + CWM for A3-A10 4.4 - [FR]
    Unlock bootloader + CWM for A1-810 4.4 - [RU] [EN] [DE]
    Unlock bootloader + CWM for A1-811 - thx @nikagl [EN]
    Fix wrong colors on B1-A71

    XDA - Acer Iconia Toolkit Thread - English
    4PDA - Acer A1-810/A1-810 Discussion - Russian
    4PDA - Acer B1-A71 Firmware/Developing - Russian
    4PDA - Acer B1-711 Firmware/Developing - Russian
    Acer Club - Acer Android-powered tablets - French
    Android-hilfe - Acer A1 Forum - German

    OLD Guide :
    Firmwares for flashing with SPFT GUIDE for 2013's Tabs - [EN]
    (A1-810, A1-811, A3-A10, A3-A11, B1-A71, B1-710, B1-711, B1-720, B1-721)

    Firmwares for flashing with SPFT GUIDE for 2014's Tabs - [EN]
    (A1-713, A1-713HD, A3-A20, A3-A20FHD)


    ________________

    Files & Download

    All Files mirrored by @vache : http://cloud.vache-android.com/Acer/
    All Files mirrored by @Moriveon : https://mega.nz/#F!34QQ1Y6C!cE0Q-VsDuvNTDwE238lRYA


    Firmwares for stock recovery


    @nikagl Mirrors :

    Code:
    A1-713    [KK]   [URL="http://cutt.us/C5d9u"]SD_Acer_AV0K0_A1-713_RV02RC05_WW_GEN1.zip[/URL]
    A1-713HD  [KK]   [URL="http://cutt.us/NgVXg"]SDs_Acer_AV0K0_A1-713HD_RV05RC06_WW_GEN1.zip[/URL]
    
    A1-810    [JB]   [URL="http://cutt.us/4wveq"]SDs_Acer_A1-810_AV052.RV00RC00_AV052.RV21RC02_WW_GEN1.rar[/URL]
    A1-810    [JB]   [URL="http://cutt.us/7Cme"]SDs_Acer_AV052_A1-810_RV31RC03_WW_GEN1.zip[/URL]
    A1-810    [KK]   [URL="http://cutt.us/r9RK4"]SDs_Acer_AV0K0_A1-810_RV0HRC03_WW_GEN1.zip[/URL]
    
    A1-811    [JB]   [URL="http://cutt.us/7Cme"]SDs_Acer_AV052_A1-810_RV31RC03_WW_GEN1.zip[/URL]
    A1-811    [JB]   [URL="http://cutt.us/UHI8"]SDs_Acer_A1-811_AV052.RV00RC00_AV052.RV02RC20_WW_GEN1.rar[/URL]
    A1-811    [JB]   [URL="http://cutt.us/nIJQJ"]SDs_Acer_A1-811_AV052.RV00RC00_AV052.RV01RC11_WW_GEN1.rar[/URL]
    A1-811    [KK]   [URL="http://cutt.us/uvyn"]SDs_Acer_A1-811_AV0K0.RV00RC00_AV0K0.RV02RC06_WW_GEN1.zip[/URL]
    
    A1-841    [KK]   [URL="http://cutt.us/mkdB"]SDs_Acer_AV0K1_A1-841_RV0CRC08_WW_GEN1.zip[/URL]
    A1-841    [KK]   [URL="http://cutt.us/ONfY"]SDs_Acer_AV0K1_A1-841_RV05RC06_WW_GEN1.zip[/URL]
    
    A3-A10    [KK]   [URL="http://cutt.us/jCJy"]SDs_Acer_AV0K0_A3-A10_RV05RC03_WW_GEN1.zip[/URL]
    
    A3-A11    [KK]   [URL="http://cutt.us/dlps"]SDs_Acer_AV0K0_A3-A11_RV04RC05_WW_GEN1.zip[/URL]
    A3-A11    [KK]   [URL="http://cutt.us/0pvh"]SDs_Acer_AV0K0_A3-A11_RV04RC05_WW_GEN1.zip[/URL]
    
    A3-A20    [KK]   [URL="http://cutt.us/utaqA"]SDs_Acer_AV0K0_A3-A20_1.018.00_WW_GEN1.zip[/URL]
    A3-A20    [KK]   [URL="http://cutt.us/adb1d"]SDs_Acer_AV0K0_A3-A20_0.011.00_WW_GEN1.zip[/URL]
    A3-A20    [KK]   [URL="http://cutt.us/to8M"]SD_Acer_AV0K0_A3-A20_1.015.00_WW_GEN1.zip[/URL]
    A3-A20    [KK]   [URL="http://cutt.us/8QLeO"]SDs_Acer_AV0K0_A3-A20_1.017.00_WW_GEN1.zip[/URL]
    
    A3-A20FHD [KK]   [URL="http://cutt.us/zEPc"]SDs_Acer_AV0K0_A3-A20FHD_1.019.00_WW_GEN1.zip[/URL]
    A3-A20FHD [KK]   [URL="http://cutt.us/ATaku"]SDs_Acer_AV0K0_A3-A20FHD_1.023.00_WW_GEN1.zip[/URL]
    A3-A20FHD [KK]   [URL="http://cutt.us/nTPPJ"]SDs_Acer_AV0K0_A3-A20FHD_1.020.00_WW_GEN1.zip[/URL]
    A3-A20FHD [KK]   [URL="http://cutt.us/h3Bn"]SDs_Acer_AV0K0_A3-A20FHD_1.019.00_WW_GEN1.zip[/URL]
    
    B1-710    [JB]   [URL="http://cutt.us/270Q"]SDs_Acer_AV051_B1-710_1.098.00_WW_GEN1.zip[/URL]
    
    B1-711    [JB]   [URL="http://cutt.us/3hIC"]SDs_Acer_AV0K0_B1-711_RV02RC02_WW_GEN1.zip[/URL]
    B1-711    [JB]   [URL="http://cutt.us/D8fk"]SDs_Acer_AV0K0_B1-711_RV02RC05_WW_GEN1.zip[/URL]
    B1-711    [JB]   [URL="http://cutt.us/NfI0"]SDs_Acer_AV052_B1-711_1.140.00_WW_GEN1.zip[/URL]
    
    B1-720    [KK]   [URL="http://cutt.us/6GlaB"]SDs_Acer_AV0K0_B1-720_RV0BRC05_WW_GEN1.zip[/URL]
    
    B1-721    [KK]   [URL="http://cutt.us/YGT9"]SDs_Acer_AV0K0_B1-721_RV0ARC02_WW_GEN1.zip[/URL]
    B1-721    [KK]   [URL="http://cutt.us/9AGHL"]SDs_Acer_AV0K0_B1-721_RV0ARC04_WW_GEN1.zip[/URL]
    
    B1-A71    [JB]   [URL="http://cutt.us/meT3R"]SDs_Acer_AV051_B1-A71_1.174.00_WW_GEN1.zip[/URL]
    B1-A71    [JB]   [URL="http://cutt.us/owmCF"]SDs_Acer_AV051_B1-A71_1.258.00_WW_GEN1.zip[/URL]



    Firmwares for SPFT

    Code:
    /-------------------------------------------------------------------------\
    | Tablet   | OS |         Link         |           MD5 Checksum           |
    |----------|----|----------------------|----------------------------------|
    | A1-713   | KK | http://cutt.us/rv5lo | 4216159d9a92bac44e7f740625fcad4d | AV0K0_A1-713_RV02RC05_WW_GEN1
    |----------|----|----------------------|----------------------------------|
    | A1-713HD | KK | http://cutt.us/nCgXD | a3bc62c9c34c148d21bc977ed81672aa | AV0K0_A1-713HD_RV05RC03_WW_GEN1
    |----------|----|----------------------|----------------------------------|
    | A1-810   | JB | http://is.gd/f810_42 | c8daacfac5b31938c968a204de388f1c | AV052_A1-810_RV31RC03_WW_GEN1
    |----------|----|----------------------|----------------------------------|
    | A1-810   | KK | http://is.gd/f810_44 | 640b0a19247b449b4dd166e050ccc01b | AV0K0_A1-810_RV0HRC03_WW_GEN1
    |----------|----|----------------------|----------------------------------|
    | A1-811   | JB | http://is.gd/f811_44 | 38d8d223a6404a4426e5d469cfa86650 | AV052_A1-811_RV08RC07_WW_GEN1
    |----------|----|----------------------|----------------------------------|
    | A1-811   | KK | http://cutt.us/L3Xq  | 0a173aaed83bb0dd493ad4f80530e450 | AV0K0_A1-811_RV02RC06_WW_GEN1
    |----------|----|----------------------|----------------------------------|
    | A1-841   | KK | http://cutt.us/9fQ35 | e0fe3657d5510db18c021f1e33199123 | AV0K1_A1-841_RV0CRC08_WW_GEN1
    |----------|----|----------------------|----------------------------------|
    | A3-A10   | JB | http://is.gd/fa10_42 | c663e76b16a930f10dff84510a79b740 | AV052_A3-A10_RV05RC01_WW_GEN1
    |----------|----|----------------------|----------------------------------|
    | A3-A10   | KK | http://cutt.us/gwSU  | a8927856a6d655adb2ea9d4807fc63be | AV0K0_A3-A10_RV05RC03_WW_GEN1
    |----------|----|----------------------|----------------------------------|
    | A3-A11   | JB | http://is.gd/fa11_42 | 0d828c175073896adef35015c03617c7 | AV052_A3-A11_RV01RC12_WW_GEN1
    |----------|----|----------------------|----------------------------------|
    | A3-A11   | KK | http://cutt.us/gJzLe | b1f610a1b07b3c0b120d103318508bca | AV0K0_A3-A11_RV04RC05_WW_GEN1
    |----------|----|----------------------|----------------------------------|
    | A3-A11   | KK | http://cutt.us/jjOp  | 59705bb7d9bb1d7530fee641aeaa5bbf | AV0K0_A3-A11_RV04RC07_WW_GEN1
    |----------|----|----------------------|----------------------------------|
    | A3-A20   | KK | http://cutt.us/mCakd | d4e034d871df6b9cddf60ea7332e8dc3 | AV0K0_A3-A20_1.018.00_WW_GEN1
    |----------|----|----------------------|----------------------------------|
    | A3-A20FHD| KK | http://cutt.us/e5Smh | 9b3c816da5e843a90c1c8a16af14d44b | AV0K0_A3-A20FHD_1.023.00_WW_GEN1
    |----------|----|----------------------|----------------------------------|
    | B1-710   | JB | http://is.gd/f710_41 | 1cdb94d3d9565d356662cd7ecbcc2b42 |
    |----------|----|----------------------|----------------------------------|
    | B1-711   | JB | http://is.gd/f711_42 | 1c2d6bdb4e37b1bf80334aca0008f619 |
    |----------|----|----------------------|----------------------------------|
    | B1-720   | KK | http://is.gd/f720_44 | 756332f6b8bda55629786f817e281210 |
    |----------|----|----------------------|----------------------------------|
    | B1-721   | KK | http://is.gd/f721_44 | 85ac1c6919361f07851f73b52ebf5552 |
    |----------|----|----------------------|----------------------------------|
    | B1-A71   | JB | http://is.gd/fa71_41 | 956c208efe2000f92edbe77648ef15f6 |
    \-------------------------------------------------------------------------/


    Bloatware Removers for custom recovery


    Custom Recoveries
    [A1-810] CWM Recovery with external SD Card mount: img
    [A1-811] CWM Recovery with external SD Card mount: img
    [A1-811] CarlivTouch-recovery-3_A1-811_Shreps.img (499ad25d01d7f2fd65e97db6e51baf3c) - @carliv Touch Recovery 3.0 for A1-811
    [A3-A10] CWM Recoveries: img
    [B1-A71] PhilZ Touch Recovery: img


    ________________

    Credits & Thanks

    10
    Flash recovery and SUPERSU for ROOT for A1-81x

    Hi all,

    Because flashing recovery on A1-810/A1-811 turned out to be a little different than others, I decided to rewrite the steps a little. I've done this procedure many times, so I'm quite sure it works this way. So far I have not been able to brick my device this way, so no real danger (unless you'd use files for different devices or type wrong parameters). In all cases - unbricking can always be done flashing a full ROM (instructions see first post).

    Here are the *magic* the steps:

    • Download and unpack drivers: http://bit.ly/1hujx8o
      • Run "install_driver.exe" AS ADMINISTRATOR and wait about 2 minutes. After this you will see a popup window (Driver for xxx installed), close it and reboot your PC.
      • Turn your tablet off and connect it to PC. You will see a popup message "New device detected". Wait until drivers will be installed OR until tab will disconnect from PC.
    • Download the archive for unlocking your A1-811: http://bit.ly/1JChdUt or A1-810: http://bit.ly/1M4AbXn
      Unpack the archive to your folder.
    • Launch "/SP Flash Tool/flash_tool.exe" AS ADMINISTRATOR.
    • Press "File"->"Open Scatter-loading file...", choose MT6589_Android_scatter_emmc.txt from the "4.2 + 4.4 Unlock" folder
    • Press "Window"->"Write Memory", new tab will appear, open it.
    • Click "Open Raw Data", choose "secuoff.img" from the "4.2 + 4.4 Unlock" folder.
    • Configure options:
      • Memory Setting = EMMC
      • Begin Address = 0x3D80000
      • Container Length = 0x006D20
    • Click "Write Memory" and connect your tab to PC.
      • Red progress bar will appear.
      • Gray-green progress will appear.
      • Green circle will appear and you will hear the "device disconnected" sound.
    • Disconnect tab, DO NOT turn it on!
    • After this return to the "Download" tab.
    • First select only PRELOADER (use preloader_unlocked.bin) and SEC_RO (use secuoff.img).
    • Press "Download" and connect your tab to PC. Flashing process will start about in 20 seconds.
    • You will see following progress bars:
      • Red progress bar.
      • Purple progress bar.
      • Yellow progress bar.
      • Green circle.
    • Disconnect tab, DO NOT turn it on!
    • Second select only RECOVERY (use CWM-6.0.5.0_A1-811-eagleowl.img, Carliv has mount issues). See attached screenshot. Click on the word RECOVERY to select the new recovery file
    • Press "Download" and connect your tab to PC. Flashing process will start about in 20 seconds.
    • You will see following progress bars:
      • Red progress bar.
      • Purple progress bar.
      • Yellow progress bar.
      • Green circle.
    • Disconnect your tab from PC. Do not boot Android, try to boot in recovery:
    • Press and Hold Volume- (lower volume, the one closest to the power button) and turn tablet on. Hold Vol-minus till the recovery has been loaded
    • In my case USB mount didn't work. So I used sideload to install SuperSU:
    • Reboot tab and check whether root was succesfull
    • I installed Xposed with the Xposed installer using the option "Recovery (flash zip automatically)". It rebooted and installed it without having to select it from sdcard...
    IF SOMETHING WENT WRONG:
    There's a folder called "Rescue" for some OS versions. In SPFT load a scatter from that folder and flash files using "Download" button. You will get a warning window "Not all images loaded...", press "Yes".
    TROUBLESHOOTING AND SPFT ERRORS:
    SPFT Error "??(2)": Reboot your PC and retry.
    SPFT Error #10*3: Reinstall driver, try another USB port.
    SPFT Error #1021 (#8045): Your tab is completely dead. Nothing can revive it.
    SPFT Error #2004: The most dangerous and common error. See "Fixing reconnecting" below.
    SPFT Error #3144: This error may be on B1 tablets. For fixing it you need to remove back cover.
    When red bar will reach 100%, wait about 1 second and disconnect the battery.
    But if it will not help, you need to use testpoint.
    SPFT Error #4001: Disconnect tab's battery and retry without it.
    SPFT Error #4010 (#4032): The problem is on PC side. Try to reinstall driver, use another
    USB port and cable. The most users who got this problem has solved
    it by using another PC. Try to Disable signature enforcement if you're on Windows 8 / 8.1
    SPFT Error #61**: You will get this error when you have unlocked your bootloader and trying to flash.
    Solution: in SPFT UNcheck all blocks except PRELOADER, flash it using "Download" button.
    Then flash ALL blocks EXCEPT PRELOADER using "Download" button.
    SPFT Error #8038: Flash using "Download" button.

    Fixing reconnecting:
    When you connect your tab to PC, it recognizes tab. But after few seconds tab starts to reconnect every 3-5 seconds. Only two solutions are available at the moment:
    1. Disconnect tab from PC, press Reset button (located in the small hole) THREE TIMES and try to flash again.
    2. Try to flash without battery. Stuck on "Searching..." in SPFT:
    See SPFT Error #4032.
    Stuck on Acer logo: Press "Reset" and turn tab on again.
    Regards,

    Nika.

    Flash recovery and SUPERSU for ROOT for A1-81x
    Flash Full ROM guide (for unbricking) for A1-81x
    8
    [GUIDE] Flash/Unbrick with a SPFT Firmware

    Flash a full Firmware with SPFT (back to original / unbrick)

    Devices compatible with this Guide :
    • A1-713
    • A1-713HD
    • A3-A20
    • A3-A20FHD

    Downloads

    SP Flash Tool

    Firmwares


    Drivers
    • Download MTK Drivers : MTK_SP_Drivers_v1.4.rar (last one unsigned) or MTK_Signed_Drivers.zip (older but signed for Windows 8)
    • Open your Windows device manager
    • Remove your battery from your device, or unplug it, or make sure your device if off
    • Plug your device to your PC with USB cable (a good cable, on a direct back USB port, avoid front USB ports)
    • A "MTxx Preloader" device should appears for a few seconds, install drivers for it
    • Unplug, replug the USB cable, your device should be well regconized (a COM device in USB Ports & Com)

    Flash the firmware
    • Download the Firmware archive and the SP Flash tool for your device
    • Unzip both SPFT and Firmware archives
    • Run flash_tool.exe has an administrator
    • The program can prompt that a scatter file is required, click on OK.
      spft_load.png
    • Click on "Scatter-loading" and choose the scatter MTxxx_Android_scatter_emmc.txt file from the Rework-Secro directory under the Firmware directory
    • You should have something like :
      spft_secro.png
    • Make sure only SEC_RO partition is checked, you're in "Download Only" mode and click on "Download": SPFT is now waiting for a device a COM port to Flash
    • /!\Remember never use the Format pattern to download versions.
    • Remove your battery from your device, or unplug it, or make sure your device if off
    • Plug your device to your PC with USB cable (a good cable, on a direct back USB port, avoid front USB ports)
    • The flashing process will start automatically : do not unplug your USB cable !
    • Wait for a Green Circle saying the flash process is finished
      spft_ok.png
    • /!\ Do NOT power on your device, it must be stay off
    • Now, Click on "Scatter-loading" and choose the scatter MTxxx_Android_scatter_emmc.txt file from the root Firmware directory
    • You should have something like :
      spft_upgrade_firmware.png
    • /!\ It's recommended to uncheck the "PRELOADER" partition, you can try to make the process with this checked only if it failed before while unchecked.
    • Make sure the download pattern is “Firmware Upgrade”, and the firmware secro-sign.img is used instead of secro-sign.img from the previous folder
    • Click on "Download" : SPFT is now waiting for a device a COM port to Flash
    • Remove your battery from your device, or unplug it, or make sure your device if off
    • Plug your device to your PC with USB cable (a good cable, on a direct back USB port, avoid front USB ports)
    • The flashing process will start automatically : do not unplug your USB cable !
    • A red bar for COM loading, a purple bar for Preloader Flashing, a yellow bar for Firmware flashing
    • Wait for a Green Circle saying the flash process is finished
      spft_ok.png
    • Close SPFT, unplug USB Cable, put back your battery, charge your device for 10min, try to boot it

    And your device is back ;)