yashsingh1/xdaforums huggingface dataset:
[Miscellaneous Android Development] pjlsantos:
Using that flashtool version, I get an error DA check fail.

The problem with the drivers, is that there's no time to detect and install the drivers. When I connect the device, turned off, I can see a new device named preloader (something) for a brief moment. But then I hear the usb disconnect sound and the device disappears, without finishing the drivers install. Ignoring that and using flashtool (I've tried 3 versions from the 4PDA manual), as soon as I connect the tablet after pressing Write Memory the progress bar turns 100% red and i get an error message telling me that the tablet is disconnected, verify cables (which I've done, tested with 7 differente cables :D ). By the way, tested in 2 laptops and 1 desktop, W7 and W8.
[Miscellaneous Android Development] Moriveon:
[MENTION=3280130]pjlsantos[/MENTION], Did you try to find&use testpoint? Testpoints are in all MTK devices.

For example, there are 2 testpoints in my B1-A71: using first PC will recognize bricked tab, second will allow SPFT to write data.
[Miscellaneous Android Development] Calingo:
Its a driver prob then if you are using the correct version of so flash tool given by FireDiamond

To install drivers

First off make sure there is no yellow triangle on the preloaded driver from the device manager

If there is or even if there isint try installing new drivers by following this guide

Go to device manager find show hidden drvices

And uninstall previous driver now connect your device turned off and and right click unkpwn device and navigate to the drivers folder and install connect your device and try

Of you don't have the drivers pm me

---------- Post added at 07:20 PM ---------- Previous post was at 06:39 PM ----------

I don't mind
[Miscellaneous Android Development] pjlsantos:
I have no preloaded driver on the device manager (with or without triangle). It appears just for a moment and it's immediately gone when the tablet shows the battery icon. I used to have a BQ phone with MTK, which i flashed and the battery symbol would not appear when i connected the phone to flash... I'm tired of scratching my head with this one :(
[Miscellaneous Android Development] Calingo:
Then its surely a driver issue

But first connect your device turned off up side down / flipped screen side down

And check if you see MTK preloaded
[Miscellaneous Android Development] pjlsantos:
Same result. I've removed all entries from preloader that were hidden, installed the drivers again (the ones from the thread on 4PDA), I've even tried manually forcing it to use the drivers tham come wiht the sp flash tool, no success. Any other ideas? Are there any alternative drivers?

---------- Post added at 08:41 PM ---------- Previous post was at 08:33 PM ----------

Sorry, did not see your reply. Did not know of something like that, but not sure if I have the heart to try that :D Every time I mess with a device internals I end up with a pile of junk... but hey, at least i'll try to find them right now.
[Miscellaneous Android Development] Calingo:
Try these drivers I am sending in a minute

---------- Post added at 09:58 PM ---------- Previous post was at 09:46 PM ----------

Drivers

Download them extract them to desktop - Uninstall All previous MTK preloader Drivers - Open Device manager :cowboy: time To Be Snappy

Connect your Tab With a good USB Cable - As soon as you see unknown device or any new device right click it - Update Driver Software - :cool:

Done Stay Cool no problem if your Device Disconnects - Browse My computer - Click Browse And Locate The Folder It Should Detect and Start Installing Drivers Once Done

connect your device again and see if everythings okay no triangle or wrong preloader device :good:

And If You are on windows - here are some extra steps you must take before following this guide - start - change PC settings - advance startup

- troubleshoot - Advanced options - startup settings - restart - 7 option and then follow the guide - disable driver signature enforcement

and make sure you use The SP flash tool [MENTION=5889030]FireDiamond[/MENTION] Provided Cause he is The Boss :highfive:

Good Luck
[Miscellaneous Android Development] pjlsantos:
No success again. By now, I suspect my pc is all messed up in drivers... I have to get some sleep, but tomorrow I'll make a quick install of windows 7 on a spare drive I have and try with a clean system. One last question (for now :) ): do you think it's a good idea to try this on linux? I'm no expert, but will give it a try if it's possible. Thank you (both) for all your help.
[Miscellaneous Android Development] Calingo:
I am A windows User

I dont Know But Would You Tell Me What Steps are you following :(

I keen to know What Errors are you getting and what steps are you following what firmware files :good:

Everything :cowboy:
[Miscellaneous Android Development] OtVang:
Let me try. :laugh:

But my tab is A1-811 and KK 4.4.2 can do that? :confused:
[Miscellaneous Android Development] Moriveon:
Sorry, A1-810 only. If it will work on A1-810, I'll take a look on A1-811.
[Miscellaneous Android Development] pjlsantos:
The errors are all related to the tablet nos staying in preloader mode. Device manager won't list the preloader for more than 2 ou 3 seconds, trying to flash makes sp flashtool recognize and immediately lose connection with the tablet. Tried with a windows 7 clean install and get the same errors.

I got a PM from a user (he did not post because he has not enough posts on the forum) with exactly the same problem. He said to me that the tablet he's trying to recover wal rooted (like mine) when the acer update appeared and, when applying the update, the device got stuck on a boot loop. He tried all the instructions in this thread like me (even with a machine with windows xp) and got the same errors as me. I've tried the suggestion from FireDiamond, to look for testpoints, but can't see none in the visible part of the circuit. I will not disassemble more than the back cover, I'm afraid of ruining it even more. My unit is going to acer, I see no other option.

I thank you for all the help provided, but I believe this is a hardware problem which we can't solve :(
[Miscellaneous Android Development] Calingo:
So you have a bootloop do you have recovery access
[Miscellaneous Android Development] pjlsantos:
Yes, I have recovery access. Tried to use the update files released to this model but it does not flash (some kind of version mismatch in books.apk or in the build version, depending on the file used.
[Miscellaneous Android Development] blizzake:
Hey, any luck on rooting the b1-730 HD, I would love to remove all this factory bloatware. Thanks! If there's anything I can do to help lmk!
[Miscellaneous Android Development] Optimissimus99:
Is it a mediatek?
[Miscellaneous Android Development] swing4thefence:
Did you ever get this fixed?

Mine is bootlooping even if I put a pin in it to force it to shut down. after it sits for a few seconds it boots itself again.
[Miscellaneous Android Development] blizzake:
How do I know if its a mediatek
[Miscellaneous Android Development] Optimissimus99:
Has it an Intel inside sticker?
[Miscellaneous Android Development] blizzake:
Yep, sure does.
[Miscellaneous Android Development] pjlsantos:
No I haven't :(
[Miscellaneous Android Development] Moriveon:
A1-810 4.4 WAS UNLOCKED

Guide.

Thanks to Acer A1-810 Devils: [MENTION=5484948]Calingo[/MENTION], [MENTION=1829889]vache[/MENTION], [MENTION=4493088]Shreps[/MENTION], [MENTION=4771007]swing4thefence[/MENTION], [MENTION=5889030]FireDiamond[/MENTION].
[Miscellaneous Android Development] Optimissimus99:
Epic... On 4.4 or 4.2?
[Miscellaneous Android Development] Moriveon:
4.4, but 4.2 will be unlocked soon too...
[Miscellaneous Android Development] kazzxtrismus:
Do we have a Russian speaker here to guarantee the translation... Im a little leery of the Google translate
[Miscellaneous Android Development] Moriveon:
I'm Russian. Guide was translated to English before link to it was posted here.
[Miscellaneous Android Development] fREAST:
Hello, im getting this error when downloading the preloader and recovery:

It flashed the secuoff though (red>green bar and i got the green circle).
[Miscellaneous Android Development] Optimissimus99:
Im on 4.4 so thats great! Only one question: can you post The Link, even on Google i dont found it

Edit: OK, found it
[Miscellaneous Android Development] blizzake:
So does that mean rooting my tablet is out of the question? The fact that its a mediatek
[Miscellaneous Android Development] entonjackson:
New Release:

v0.8.4

======

- A1-810: Fixed root for Android Kitkat >= 4.4.2

- A1-810: Fixed abd devices id, changed sind Kitkat update

Thanks to Optimissmus for testing.
[Miscellaneous Android Development] JcNeji:
Thanks!

Does anyone have a system image for RV0BRC01_WW_GEN1? Root from scratch is not really an option for me.
[Miscellaneous Android Development] Optimissimus99:
Unlocked A1 810 Successfully. HUGE HUGE HUGE Thanx to FireDiamond, AWESOME work, mate!
[Miscellaneous Android Development] andrewbat:
I missed it.....how?
[Miscellaneous Android Development] Optimissimus99:
use Google (Tag: 4pda a1-810) the first result
[Miscellaneous Android Development] JcNeji:
Could I ask what the point is (at this moment in time) to unlock the boatloader and install a CWM recovery? It is still a far cry from custom roms right?
[Miscellaneous Android Development] y2k-inc:
Failed at Creation "system" with v0.8.4 on 810 with Kitkat this is on Elementary OS, now trying on Zorin OS
[Miscellaneous Android Development] Calingo:
Root

You have rooted you Acer with the toolkit can you mount system rw ...???
[Miscellaneous Android Development] Optimissimus99:
No, rooted it with Brunos guide , but with superSU, and now unlocked it. I have no /system RW :(
[Miscellaneous Android Development] Calingo:
But did you try the toolkit method as well ..?? Did you get root with system rw then
[Miscellaneous Android Development] Optimissimus99:
I think it cant work Form scratch, At least [MENTION=3392632]entonjackson[/MENTION] only added prerooted image commands...
[Miscellaneous Android Development] Bruno25:
Cyanogenmod / Linux unlocking procedure

The locked bootloader was the main point that was prohibiting to install Cyanogenmod on this tablet...

Now everything is possible :)

Anybody knows how to start ?

Is there a Linux version of the bootloader unlocking procedure, preferably not a black box procedure ?

Cheers !
[Miscellaneous Android Development] Shooting Star Max:
Having CM11 here would be perfect. I hope there is some more developent now that people here have unlocked various new Iconia devices' bootloaders.
[Miscellaneous Android Development] Bruno25:
[MENTION=3392632]entonjackson[/MENTION]

If I remember well, in my first attempts to root the tablet under KitKat, I noticed that I could not write in /cache.

You should change the location of system.img(.gz) from /cache to /data/local/tmp.

For instance,

p.stdin.write(bytes("dd if=/dev/block/mmcblk0 bs=4096 skip=" + dd_seek + " count=" + dd_count + " | gzip > /cache/system.img.gz\n", "utf-8"))

should be

p.stdin.write(bytes("dd if=/dev/block/mmcblk0 bs=4096 skip=" + dd_seek + " count=" + dd_count + " | gzip > /data/local/tmp/system.img.gz\n", "utf-8"))

Just my $.02
[Miscellaneous Android Development] fnldstntn:
İ triad to unlock with your guide and this is the resoult i dont know if worked... i triad to flash the root.zip but it aborted... if the unlocking is sucsesfull can we flash another better recovery like cwm 6.x or philz recovery_? And thenk you very much for your and every ones work...
[Miscellaneous Android Development] Bruno25:
Here you go => http://xdaforums.com/showpost.php?p=55112630&postcount=11

But I don't really understand the problem with the root from scratch procedure... If everything does well, you shouldn't loose anything...

You could also consider the manual rooting procedure => http://xdaforums.com/showpost.php?p=55046292&postcount=4
[Miscellaneous Android Development] Moriveon:
Try to reflash. Looks like you've unchecked RECOVERY in SPFT.
[Miscellaneous Android Development] Bruno25:
I think that this unlock procedure works with KitKat. From your screenshot, I see that you are still with JB.
[Miscellaneous Android Development] y2k-inc:
So i guess, the tool is not 100% works with A1-810 on Kitkat? tried it on Zorin OS and it's failed at the same place ... OPS, your tools need a small fix :)
[Miscellaneous Android Development] entonjackson:
Here is a new version. Could anyone please test it?

If it's ok, i put it on the OP.
[Miscellaneous Android Development] fREAST:
I managed to get it to flash my A1-810!

Huuuge thanks to [MENTION=5889030]FireDiamond[/MENTION]! :victory:

I had to use SP Flash Tool v5.1352.01 instead of the supplied SP Flash Tool version for it to work.
[Miscellaneous Android Development] y2k-inc:
Fail at the same place ... trying with -d and --debug, but cannot see the log file? (on A1 810 kitkat : RV0BRC05_PA_CA)
[Miscellaneous Android Development] swing4thefence:
I didn't see a "Write Memory" option in V5.13. How did you account for that step in the guide?
[Miscellaneous Android Development] Calingo:
Do hit the thanks button if we helped you unlock bootloaders for Acer
[Miscellaneous Android Development] drziddo:
Hello people.

First of all thanks to OP everyone involved.

My 5 years old daughter have a B! 710 Iconia tablet, I managed to root it with the toolkit months ago.

But now I have notices we have other thiongs to do with it, like unlock the bootloader and install cwm.

Unfortunately I am too noob, I have tried reading like the 20 last pages of the thread but don't know where to start.

Some links send me to a russian page, and google translate is not working so I am lost.

If any of you can please help me to get it done, me and my daughter will appreciate so much.

Thanks in advance.
[Miscellaneous Android Development] Calingo:
Keep Calm

Wait for tommorow morning we are shifting all unlocking guides to a new thread it will be easier there
[Miscellaneous Android Development] drziddo:
Ok, I will wait.

Thanks again.
[Miscellaneous Android Development] fREAST:
I forgot to mention but i actually used the Write memory in the SP flashtool that FireDiamond supplied, and the first time i used it that worked (Write Memory) but right after when i tried to download the recovery etc it failed, so thats when i tried v5.13.

See my previous post about this here: http://xdaforums.com/showpost.php?p=55395591&postcount=3768
[Miscellaneous Android Development] Calingo:
Welcome

You are welcome as soon as we start the thread I will pm you :good:

---------- Post added at 11:02 PM ---------- Previous post was at 10:50 PM ----------

So you mean you wrote Memory from fire diamonds flashtool and downloaded from your flashtool :rolleyes:
[Miscellaneous Android Development] wbrambley:
I used the SPFT from FireDiamond for both operations successfully. Love the fact i can backup with CWM.

Have tried flashing superuser, can get SU with ADB but not with terminal etc. Have Acer done something to stop apps calling SU?

Is there a SU version that works for anyone out there, i have tried flashing a superuser.zip and have pushed from the toolkit's version and both have same result. (/system is writable from recovery, Most excellent!!)

Edit: never mind, have SU working now with root.zip in next post on 4PDA thread.

Thanks a lot to everyone who has contributed to this great achievement!
[Miscellaneous Android Development] kubistar:
i think no, i tap the reset button over the shuttdown button, but nothing, still only acer logo displaying. How can i do the factory reset?
[Miscellaneous Android Development] entonjackson:
you must hit the reset button. take a pin. otherwise you cannot do anything in this state.
[Miscellaneous Android Development] kubistar:
yes, i hit the reset button! but nothing! (when i hit the reset button, the tablet shut down), any idea?
[Miscellaneous Android Development] entonjackson:
hold power + volume-up button to get into recovery. there you can do a factory reset.
[Miscellaneous Android Development] kubistar:
soo, i do the factory reset in recovery mode, still nothing, only acer logo :(
[Miscellaneous Android Development] entonjackson:
Obviously the system image wasn't fitting to yours. this also happened to a few others here.

I would try to apply the other firmware updates from the 1st post.

if you get back to your system i would try rooting from scratch running a linux. because the method with the system image is dangerous, as there obviously ARE differences between RV04RC04 and RV04RC04.
[Miscellaneous Android Development] kubistar:
now, the tablet continuously restarting!!!

Ps. what will do, if from the 1st post i install the Acer Firmware Update RV05RC06?!

THX!
[Miscellaneous Android Development] hankhandsome:
ok, i'm a bit confused - bit rusty on flashing as i haven't had an android device for a while. i downloaded the toolkit, did everything it asked - drivers e.t.c.., checked the firmware and i was pretty sure it was RV04RC04.

downloaded that system image (from here), placed it in the folder and ran - pressed enter all the way through and it finished, telling me the device is rooted and to reboot. had to press the reset switch, and it came back and is currently in a bootloop.

each time it comes back i get "android is upgrading and it's optimising app 1 of 34' as well, but it just loops round again.

what won't help tonight is that i don't currently own an SD card ..

i'm downloading the RV05RC05 firmware update which is going to take about 5 hours apparently .. on my 60mb connection ..

i can get in to recovery ok, so what's the best thing to do without an SD card? can i re-flash it over ADB? or will i just have to buy an SD card tomorrow and leave this boot looping until the battery dies?
[Miscellaneous Android Development] entonjackson:
you can flash over adb or internal SD or external sd

To all: I think I will take the system image for 04 off post #1 as too many people seem to get bootloop.
[Miscellaneous Android Development] hankhandsome:
thanks for the reply. i can't access the internal SD card in a bootloop unfortunately. pressing the reset button seems to have turned it off, so i might have to buy a cheap SD card tomorrow just to save myself a lot of hassle.

if i download the RV05RC05 firmware update, is it just an image i can flash from recovery? i guess i'm normally used to flashing custom roms in ZIP files to mobile phones i suppose :)
[Miscellaneous Android Development] entonjackson:
yes you can update in recovery. you get into recovery by holding power + volume up
[Miscellaneous Android Development] hankhandsome:
thanks. hopefully that'll recover it and i can try rooting again. if i'm brave i might try installing ADB and squirting it across from there ..
[Miscellaneous Android Development] hankhandsome:
this isn't very good. got an SD card and put the firmware update file for RV05RC05 and RV05RC06 on it and booted in to recovery. tried flashing both but keep getting the "Error: Invalid partition setting. 17: fat 238e8000:888e8000. Installation aborted" error.

I've read the bulk of this thread and the suggestion seems to be to download the stock rom from the acer website but i can't find it and nobody links to it, so i'm a bit stumped .. i'm still looking though
[Miscellaneous Android Development] entonjackson:
This is acers fault. We're still waiting for a proper firmware update from Acer.
[Miscellaneous Android Development] hankhandsome:
it's a pain in the ass .. i'm live chatting with one of them now so i'm hoping he can give me a link for the stock rom so i can try that

#edit

it's actually back. i didn't realise you could do a "clean boot", which i did, and it's basically restored it.

it's got the image_version of

acer_AV051-B1-A71-RV05RC05_WW_GEN1 so at least i can try rooting it again without the RC04 version :)

#edit 2

ok, i downloaded the system image for RV05RC05 and put it in the required folder for the toolkit. ran the whole thing through and it said it had completed. rebooted, installed su and ran the root checker and it says it is NOT rooted

#edit 3

i'm an idiot. i installed the wrong SU .. DOH!!!. installed superuser and root access is verified and working. very happy and thankyou :D
[Miscellaneous Android Development] hankhandsome:
can i ask - has anyone removed any of the google bloat stuff ?

i'm thinking stuff like google currents, google+, play books/magazines - stuff like that?. once i'd got titanium backup installed on my old android phones, i'd go through the list of stuff i felt wasn't necessary for me and uninstall it to free up a bit more space.

i don't mind leaving it, but if removing some of the stuff will make a big difference then i'll certainly strip it down a bit.
[Miscellaneous Android Development] entonjackson:
i removed currents for sure. play books i don't know. must take a look.

no problems, no fc btw
[Miscellaneous Android Development] hankhandsome:
nice, thanks. i'll have a look at what can go. one final question if i may?

what's the best backup solution? again, i'm used to having a nandroid backup on a phone so i can just flash that back on if anything goes wrong, so is there a tablet equivalent, considering it doesn't currently have clockworkmod ?
[Miscellaneous Android Development] entonjackson:
I use Titanium Backup Pro and i like it.

For syncing app data between tablet and other devices i use data sync. Pretty nice if you use apps across devices, e.g. games save data.
[Miscellaneous Android Development] hankhandsome:
i do have pro version of titanium backup actually, so i'll certainly use that. i was just wondering more if there was a way of taking a backup image i could store?

but then even while i say that, doing the "clean" reboot does appear to restore the tablet to factory settings i suppose, so maybe it's not necessary and a titanium backup would suffice
[Miscellaneous Android Development] fnldstntn:
i unlocked my a1-810 with another pc succsesfully and rooted with root.zip from 4pda but i cant get system write permissions...
[Miscellaneous Android Development] Optimissimus99:
I cant too, for that we need Acers kernel source, at the moment they are violating GPL, because they only post JB source
[Miscellaneous Android Development] fdc77:
to flash under windows 8.1 used this driver

http://www.mediafire.com/?7yee2of64nhl947

1. reboot windows without driver signature

2. connect tablet

3. go to device manager

4. under view tab check show hidden device

5. now under port (com and lpt) we will find mediatek preloader

6. manually install driver that i have post

now we can unlock bootloader

http://4pda.ru/forum/index.php?showtopic=480290&st=4840#entry34180301
[Miscellaneous Android Development] Calingo:
Flash able BOOT.img

We Are Working on This Problem and We Even Found The Solution Which We Will Be Posting Soon ;)
[Miscellaneous Android Development] Moriveon:
New thread!

Alright guys I created the new thread, you are welcome: click.

Now I'm going to upload some content to thread...
[Miscellaneous Android Development] kazzxtrismus:
Can we mount sys rw via adb on the 810? (after kk root/cwm)
[Miscellaneous Android Development] Moriveon:
A1-811 was unlocked and cwm'ed. Look in my thread for more info!