yashsingh1/xdaforums huggingface dataset:
[Acer Iconia One 8] social-design-concepts:
Sounds like the insecure bootloader will work I suspect the issue your seeing has to do with how the efi binaries are signed.
[Acer Iconia One 8] brianinmaine:
Just wanted to report another success - A1-840FHD. I used guide 3 and had to wait while drivers were installed installed in Windows 7 64bit. Finally got root, installed adaway and titanium backup pro to uninstall bloat.

Thanks!
[Acer Iconia One 8] Jaredgt500:
It wont fine any Package programs

can some one please help me i cant seem to get it to find the package program it just turns red and says, Could not find any package programs Press any key to continue . . . any ideas?
[Acer Iconia One 8] maxpowers6:
A1-860 root

Does anyone have any more news yet about the A1-860 root for windows? Linix isn't an option for me.
[Acer Iconia One 8] Analia Delich:
Acer A1-860 UEFI (problem to root)

I have exactly the same issue.

After press T3 in menu of IntelAndroid-FBRL, the tablet enter in recovery mode well.

After select SuperSU zip UPDATE, the messages are as the follows:

Android system recovery

ACER_AV0L0_A1-860_1.009.00_WW_GEN1

Lock State: Locked.

-Install /sdcard/SuperSU-V2.65 zip

-Finding update package...

-Opening update package...

-Verifing update package...

E: failed to verify whole-file signature

E: signature verification failed

--Install Fail--

The specs of the ACER ICONIA A1-860, as the follows:

Acer a1-860

android 5

UEFI: citizen_102

kernel: 3.10.20-x86_64_byt

image: acer_AV0L0_A1-860_RV02RC01_WW_GEN

compilation: ACER_AV0L0_A1-860_1.009.00_WW_GEN1

The first step to root the tablet, is entry in the BIOS setup and Disable Secure Boot!.

Someone knows how to enter the BIOS setup in Acer Iconia A1-860?

Thanks a lot!!!
[Acer Iconia One 8] jhofseth:
This looks like the SU zip was attempted to be installed via *stock* recovery. ClockworkMod Recovery (CWM) needs to be the recovery used to flash the SU zip file and the instructions for that are linked on page one of this thread. Good luck. :)
[Acer Iconia One 8] Cysquatch:
A1-850 , tried both guides with the same outcome. Any input would be appreciated.

"Installer device ignored"

"Failed to mount device "/dev/block/sda1" "

"Installer device ignored"

"Installer device ignored"

"No valid installer medium found."

"Could not open " /sys/devices/virtual/backlight"

*EDIT*

fastboot drivers did not install correctly.

Once the tablet would enter the bootloader it was no longer detected by the PC. With the tablet in the bootloader I re-installed the drivers through the device manager and everything worked perfect.

Hope this info helps others with similar issues.
[Acer Iconia One 8] EdgeStarfckr:
just find ur tab in device manager right click it n update driver... browse pc.... navigate to where you extracted the files and select folder..... update.

---------- Post added at 10:02 AM ---------- Previous post was at 09:21 AM ----------

just find ur tab in device manager right click it n update driver... browse pc.... navigate to where you extracted the files and select folder..... update.
[Acer Iconia One 8] dadeus23:
Rom

Hello people. Anyone know about some Custom Rom for Acer Iconia A1-840FHD? ACER don´t ask anything about this theme. It's incredible that this tablet don't have any update to Android Lollipop or Android Marshmallow.
[Acer Iconia One 8] affemitandroid:
recovery image

Hello guys,

I accidently flashed a new recovery.img to my A1-840 (not FHD). Now recovery doesn't start anymore, which means no factory resets or software updates are possible without using the temporary recovery from solution number 2 from this thread.

I already tried flashing the A1-840FHD stock recovery image provided in solution 4 (fastboot flash recovery stock_recovery.img) but it didn't help. Also, the official acer software from their site does not contain a recovery image. I also couldn't find recovery images in the firmware files linked in this thread.

Can anyone provide me with a working stock image so I can restore full functionality of the tablet?

Thank you in advance!
[Acer Iconia One 8] jhofseth:
flash this zeroed recovery image file: https://www.dropbox.com/s/8gcggataa3zbg5f/zeroed--CWM-v6.0.3.7_A1-840FHD.img?dl=0

then flash this *unzipped* stock_recovery.img: https://www.dropbox.com/s/uhxepyxz53riksv/stock_recovery.img?dl=0

Good luck! :)
[Acer Iconia One 8] affemitandroid:
Thanks for your help, but unfortunately, doing this did not bring recovery back - I still can't boot to it. Do you have any more ideas? Or am I doing something wrong? (I used "fastboot flash recovery zeroed_image.img" followed by "fastboot flash recovery stock_recovery.img"...)
[Acer Iconia One 8] jhofseth:
I'm not sure and can't test it, because I've got an A1-860. If you haven't already, I would reflash the zeroed recovery and then use the stock_recovery.img I uploaded. It's possible the other version you flashed was corrupted in download or not unzipped or something like that. Good luck! :)
[Acer Iconia One 8] affemitandroid:
Hi, I already tried them - and I compared the hashes of the stock image, they're the same. Where did you get your file from?
[Acer Iconia One 8] jhofseth:
That sucks.... Stock was from first page of thread (section 4), then unzipped. The zero image was also from the first page (section 4), CWM unzipped, then every byte was replaced by a zero in a hexeditor called, wxHexEditor. Maybe there is an issue with that particular stock recovery image? I really don't know. I wish I could test it, but I have an A1-860. At this point, it sounds like you may need someone to upload a copy of their A1-840 FHD recovery. Here's where I think the problem might be:

there are 3 versions of A1-840 FHD on the first page (firmwares section); the first two ROM updates don't appear to have a recovery image, but the third one might--downloading now, will check. This tablet was upgraded to Lollipop and that was probably when the recovery image changed. I will update after the download completes. :)

---------- Post added at 01:56 AM ---------- Previous post was at 01:27 AM ----------

Nope, none of the 3 have recovery.img. Someone else will have to upload their recovery. There should only be one version, since Acer doesn't appear to have updated the recovery. Good luck! :)
[Acer Iconia One 8] affemitandroid:
Thanks for your research! But there seems to be a misunderstanding: I have an A1-840 (without FHD). I think that's why the image doesn't work. But maybe someone can upload his/her recovery image from the device?
[Acer Iconia One 8] jhofseth:
Yeah, the CWM recovery image from section 4 was for A1-840 FHD only (i.e., same for stock, obviously). So, if none of the A1-840 firmwares (i.e., 4 of them on first page) have a recovery.img in them, someone will have to upload their A1-840 stock recovery. It sucks that Acer doesn't include a recovery.img in the A1-840 ROM they post on their official A1-840 support page.

---------- Post added at 06:39 PM ---------- Previous post was at 06:28 PM ----------

I came across this A1-840 Facebook page: https://m.facebook.com/groups/1007021725984505

If you join the public group and ask a member to send you their A1-840 recovery, I'm sure someone would be able to via email attachment or fileshare, etc. The page is in Spanish but it auto-translates. Good luck! :)
[Acer Iconia One 8] vampirefo:
Most likely you can just make your own.
[Acer Iconia One 8] affemitandroid:
Totally agree on that! Thanks for the hint, I'm trying to ask for help in that group then!
[Acer Iconia One 8] EdgeStarfckr:
wow written in 2014 but acer a1-860 didnt come out till feb 2016.. it cant be rooted after days of searching....
[Acer Iconia One 8] jhofseth:
I want to use this linked thread to develop Cyanogenmod for the ACER ICONIA TAB 8 A1-860: http://androidforums.com/threads/ace...pment.1012278/ :)
[Acer Iconia One 8] jhofseth:
you could try adb/fastboot commands in below linked post #2; I just don't know if the syntax changes in the Windows adb/fastboot version (i.e., I use Linux; they definitely work in Fedora 23 KDE Linux), but put that fastboot binary plus adb binary and the recovery.zip in the same directory and maybe the fastboot commands will work for you (i.e., don't use script, only use fastboot commands listed) after changing to that directory in Command Prompt. Good luck! :) http://androidforums.com/threads/how-to-root-a1-860.1014590/
[Acer Iconia One 8] jhofseth:
check out post #3 (linked), I just created it in response to your post and to AnaliaDelich's issue with Windows rooting: http://androidforums.com/threads/how-to-root-a1-860.1014590/
[Acer Iconia One 8] EdgeStarfckr:
are you saying the a1860 can be rooted? i got kali also.. use this os?

---------- Post added at 05:47 AM ---------- Previous post was at 05:41 AM ----------

and the commands work i can get it to boot in cwwhatever. then i choose the zip and unzip it i guess? then it just reboots... oh yeah to get to thAT OTHER CWD whatever i have to press the vol+ putton a bunch of times wich is not stated in the steps.... should i post a video of this?

---------- Post added at 05:50 AM ---------- Previous post was at 05:47 AM ----------

/!\ Please note that the tethered CWM has just boot, it has not be flashed, we can't flash a custom recovery while our bootloader are locked. /!\

i think this is the major part... theres no way to unlock the boot loader... and theres no enable oem in the developers tab
[Acer Iconia One 8] jhofseth:
---------- Post added at 05:50 AM ---------- Previous post was at 05:47 AM ----------

[/COLOR]

/!\ Please note that the tethered CWM has just boot, it has not be flashed, we can't flash a custom recovery while our bootloader are locked. /!\

i think this is the major part... theres no way to unlock the boot loader... and theres no enable oem in the developers tab[/QUOTE]

Yeah, Kali should work too, but it sounds like it worked for you. As for EFI bootloader, it is firmware locked (for autoboot; manual with USB OTG keyboard is possible

) and you have to solder system board and flash firmware to toggle a single bit--or so I've read. Boot, recovery, etc., appear to be Intel stitch signed--unlike the older 840 FHD. See post #12 on my ACER ICONIA TAB 8 A1-860 Cyanogenmod Development thread: http://androidforums.com/threads/acer-iconia-tab-8-a1-860-cyanogenmod-development.1012278/ :)
[Acer Iconia One 8] affemitandroid:
Hi again,

they had an image at hand! I tried it and it works like a charm. Thanks again for you advice!

If anyone needs it, maybe this file could be added to the first post, I uploaded it at

https://mega.nz/#!Qo01jSrY!Du-K-FBnHY0I0wlBuwvReEkrsLjUPgg2TRmbwaZqx2Y

Bye!
[Acer Iconia One 8] brabusbg:
Hello guys,

I'm newbie and need some help.

I wanted to root my tablet Acer A1-840 HD, but I have some issues in the beginnig.

[IMG="RED"]http://imageshack.com/a/img921/8339/00jV7f.jpg[/IMG]

How Can I fix it?

I have installed the drivers (I think so, because I browse my SD card and everything in my tablet).
[Acer Iconia One 8] Shreps:
Like mentionned in the tutorial and in your screenshot, you PC is not "authorized" in debug mode, you have to authorize it.
[Acer Iconia One 8] XXCoder:
Just connect phone when phone debug mode is on, then it will display signature from your pc and ask if you approve of it.

Press yes and it should work afterwards.
[Acer Iconia One 8] brabusbg:
Thnak you guys for the help. Finally i solved the problem when i change my usb cable.

Can you gimie an option for any ROM with Lollipop for Acer Iconia A1-840HD (not FHD)? if there is with Marshmallow too :)

Thnak you in advance!
[Acer Iconia One 8] abenitezh85:
Help

When I try to root my device, I get everything right until it shows me the following error.

failed to mount device "/dev/block"sda1" as installer partition using fs_type "vfat"

I could help thanks.
[Acer Iconia One 8] skiiermike:
I was able to root successfuly, thank you.

Are there any good custom Roms for the b1 810? I can't find any.
[Acer Iconia One 8] MetroidPrime_Stratton:
Need Stock Firmware for my acer a1-850

The download link for the a1-850 isnt letting me download, and im also currently stuck in a situation of bootloop and for some reason my sd card wont mount to my tablet when i need it to be mounted, any information on that?
[Acer Iconia One 8] Shreps:
Here is a mirror : http://vache-android.com/?dir=hubicAcer/A1-850/OS Image/WW_GEN1

Envoyé de mon One+
[Acer Iconia One 8] ScottNY:
A1-840 Regular Root?

Has anyone found a way to successfully root the non-FHD version? It doesn't seem like it. If so, please point me in the right direction. I have read through this thread over and over.

Thanks!
[Acer Iconia One 8] jathon0815:
[MENTION=313379]nikagl[/MENTION]

Sorry to resurrect old threads, but I just got an Iconia Tab 8 A1-840FHD and I wanted to get an updated image on it. I tried the link to the CWM and got a 403 Access Forbidden. Any chance you or someone else could link me to the CWM for the A1-840FHD? Thanks!
[Acer Iconia One 8] Shreps:
vache-android.com/?dir=hubicAcer/A1-840FHD/Recovery

Envoyé de mon One+
[Acer Iconia One 8] LethalGuineaPig:
Will this method work on the B1-850 model? I'm aware it is not listed, but I want to make sure.

I'm assuming not since you credited someone on their work with Intel tablets and this model contains a Mediatek processor.
[Acer Iconia One 8] Grumbledor:
Acer Iconia tab 8 a1 850 bootlooped

I have tried flashing it with the recovery from this thread and nothing... the flashing failed for boot so tried to cuompletely flash the system with the img provided, and still a fail. I was wondering if anyone had any information on why it's not working.
[Acer Iconia One 8] FortuneDroid23:
The reason your device is boot looping is because the thread says that its only for the A1-840FHD.
[Acer Iconia One 8] gggg:
deleted
[Acer Iconia One 8] zcam9878:
Hey does anyone know how to unlock the bootloader on the B1-810 as I am sick and tired of stock KitKat yes I've customized it and removed bloatware but that's not enough lol I really want a different ROM but the bootloader for the B1-810 isn't unlocked. Any help is appreciated:)
[Acer Iconia One 8] captbackfire:
Anyone got a Marshmallow ROM they trust for the a1-840FHD now that I've got mine rooted?
[Acer Iconia One 8] qu3becker:
I'm pretty sure we need an unlocked bootloader before being able to flash anything else.

Hopefully I'm wrong. It's been awhile since I flashed stuff.
[Acer Iconia One 8] DuncDog:
The golden goose?

I have been keeping an eye on this thread for a little over a year now, and at the moment I am actually re-flashing the OS to my Acer A1-840FHD as we speak due to a number of issues I was having with Chrome, Youtube, and others flat out refusing to connect to the net. Started about a month ago or so with no linked cause. There was also a bug with both Youtube and CPUz both reading my CPU as x86 or ARM depending on the day of the week... odd.

On the note of the 840FHD, just noticed something on the Acer Download page noting following:

For those who want to take a look, you'll have to take my word for it... not enough posts under my belt for a link. Just give a quick browse to the Acer Support page and look under "Documents".

I will be the first to admit that I am no developer, but that seems to me like we have had direct access to the Kernel and Source Code for this tablet in particular for going on 7 months now? Again, huge lack of knowledge is preventing any amount of usefulness on my part, but given how insanely cheap this tablet has become, it's a shame that no one has been able to crack the enigma as of yet.

Were someone willing to try and get things rolling, I would be happy to aid as a tester for such things, as KitKat is getting a little long in the tooth, and I'm too cheap to replace it with the Nvidia Shield Tablet K1 for now.

UPDATE: Also, as a last note. It appears that the Permanent CWM for the 840FHD has a dead link on the ABD fastboot.
[Acer Iconia One 8] T10NAZ:
I just found the kernel http://global-download.acer.com/GDFiles/Document/App.%20Guide/App.%20Guide_Acer_20151221_A_A.zip?acerid=635862918024567370&Step1=TABLET&Step2=ICONIA%20TAB%208&Step3=A1-840FHD&OS=ALL&LC=en&BC=ACER&SC=EMEA_27

I had experience with playing with a kernel, I made momentum for the zenwatch 2, however getting a build of cyanogenmod is beyond me
[Acer Iconia One 8] CesarLara21:
Acer A1-860 android 5.0

I would know if this method works with A1-860 lollipop (5.0) please.
[Acer Iconia One 8] Shreps:
Look at first post details, it should work.

Envoyé de mon Moto G (4)
[Acer Iconia One 8] Grumbledor:
then is there a custom recovery that works with the a1-850?
[Acer Iconia One 8] Caporeira:
Is this solution also for B1-820 (Android 5.0).

Is there a video tutorial how rooting this tablet?
[Acer Iconia One 8] thenatdead34:
SAME no working for me A1-830
[Acer Iconia One 8] npulyk:
Error A1-840FHD

First I connect everything and it recognizes it

Then I type T3 and it comes up with "Error Protocol Fault"

Then it reboots the device and on the computer it says, "Copy Needed Files To Our Device" and on the tablet it says, "E: installer device ignored" and then says, "E: Failed to mount device '/dev/block/sda1' as installer partition using fs_type 'vfat"

Then under that it says, "Could not open /sys/devices/virtual/backlight"

I am stuck here. Am I missing something?

Also got the same problem with T2 and T1
[Acer Iconia One 8] random4t4x14:
Any love for the Acer Iconia One 8 B1-850?

I've been trying to get this rooted since the latest updates (which were needed, as Google Maps was completely broken before the updates). Thanks!
[Acer Iconia One 8] retardigrade:
I somehow f*cked up my Tablet by accidentally writing to the wrong storage (/dev/block/mmcblk0, was writing zero to mmcblk1). Strangely, the BIOS Screen boots up (press F2 while OTG Cable + Keyboard attached). So How can i repartition it and reinstall stock Android?

EDIT: Booting up Windows gives an ACPI_BIOS_ERROR issue
[Acer Iconia One 8] LuisMRamos:
Hello I tryed to root my tablet then it got bricked and it was bootlooping then I tryed to format my tablet and now the tablet doesnt turn on and my pc doesnt recognize the device what do I do does anyone have a solution?
[Acer Iconia One 8] pjcamp:
Guide 2 doesn't work for A1-840. Error messages from all three exploits:

Installer device ignored

FASTBOOT INIT

failed to mount device '/dev/block/sda1' as installer partition using fs_type 'vfat'

FASTBOOT CMD WAITING

installer device ignored

installer device ignored

No valid installer medium found

Could not open /sys/devices/virtual/backlight

This is an elderly tablet. I was hoping to repurpose it as an alarm clock, but it can't keep accurate time. Every few weeks it will suddenly jump some random number of hours off. Wanted to install ClockSync but it requires root. Probably going to install the tablet in the trash instead.

A1-840 HD running Android 4.4.4
[Acer Iconia One 8] jkenny23:
I tried your method in this thread: http://androidforums.com/threads/how-to-root-a1-860.1014590/

I can get into CWM tethered and flash the SuperSU zip. I've tried SuperSU v2.78, 2.65, and 2.46, they all appear to flash correctly from CWM, but once the device boots there's no su and no SuperSU app. Installing the SuperSU app from Gplay store says no root found. Why is the install from CWM failing even though it doesn't report any errors? I've got an A1-860 model A5001, mfg date 08/2015.
[Acer Iconia One 8] jhofseth:
not sure, don't own one anymore

Sorry, I don't own that tablet anymore so can't experiment. Right now, I just use a rooted, custom kernel Galaxy Note 5. :)
[Acer Iconia One 8] senappa:
end of footer error

Hello all, I'm trying to get back to the vanilla firmware via the stock recover method -- I've read through the thread and read one other person having the same error message, but no solution. Any clues?

I'm using A1-840HD, and tried tons of roms on this thread, and even went to the Acer's website and dowloaded their stock firmware -- Acer.AV0K1.A1-840FHD.RV0TRC01.WW.GEN1.zip but to no avail.

What I've done so far is to unzip the above firmware file (or others), get the update,zip file, put in in an empty microSD card, load the stock recovery tool (power & vol+), and "apply update from external storage" and I get the following error below.

-- Install /sdcard ...

Finding update package...

Opening update package...

Verifying update package...

E:end of footer from /cache/sideload/package.zip not 0xFFFF (File exists)

E:signature verification failed

Installation aborted

My main motivation is to try getting my camera working again -- I've been getting the "unfortunately, camera has stopped error", and some people have had success in getting working again after restoring to old firmware, which is where I'm trying to get to... (resetting the system in itself hasn't helped).
[Acer Iconia One 8] Kainey:
Hi, is it working for Iconia One B3-A30 ?
[Acer Iconia One 8] xpmule:
Hello people.. this is my first post here.

I have been skimming through all the pages and the web and another topic on the Iconia.

And i have some questions.

I know it sucks answering the same ones over & over but no one wants to brick their device right ?

Let me start by saying i have a Moto phone i got rooted and the bootloader unlocked etc with ADB / Fastboot on windows so i think i see what is going on here.

Basically you can boot the device once with the Custom Recovery or you can flash it and boot right ?

I take it many of theses tablets need to be booted but can not be flashed. (no flashing the recovery)

So i have the A1-830 and i would like to use TWRP and then root my tablet with SuperSu like i did on my Moto phone.

Can TWRP be flashed or is it Boot only ? (I've only used TWRP before not CWM)

If one of you can point me in the right direction i think i can figure out the rest.

The first post here is a little confusing i think.
[Acer Iconia One 8] xpmule:
Well i have tried every variation of the first post guide except TWRP and all of them fail.

It restarts and says waiting then i land on the standard bootloader screen and if i eventually hit recovery it shows the stock one.

I am on Win7 and my A1-830 was freshly reset and then an update was applied 1.008 ..is that the problem ? The update ? hmmm

So far i am stumped.. i REALLY have followed this all to a T exactly.

I am almost out of options :(

I wonder if the fact i had fastboot installed for my Moto Phone is the problem ?

I had previously installed "Minimal ADB and Fastboot" before for a Moto E 2015 phone.

Like maybe it's launching the older one i had on here and not the one with the root kit pak's etc.

I downloaded the Google driver and tried to manually install it but it wouldn't work.

So i used the driver installer from the batch kit and it said it worked fine..

I hit always allow on the USB debugging on the Tablet for my PC so that is fine.

I just don't get it.. i have been over all of it over & over and it just refuses to boot CWM.

Anyone have any ideas ?

I tried all three methods mentioned here on the first post perfectly.

It's also tough but i have been going through every comment here and almost all of them are about the 840's (not my A1-830)