yashsingh1/xdaforums huggingface dataset:
[Android General] luchaw90:
a1-811

My rom version is RV02RC22_TWN_GEN1. I downloaded toolkit v0.9.4 and rooted from windows. After completely rooting, reboot my tablelt. And i get bootlooping. I can't download http://is.gd/mtk_drv from this http://xdaforums.com/showpost.php?p=60137778&postcount=529. Sorry for my english writting.
[Android General] nikagl:
I will think about what to do. Not sure why you used the toolkit - it's mentioned quite a lot of times you should not be using the toolkit but the CWM method from this thread. Also not sure why you decided to try to get root with the toolkit and use this thread to ask how to recover from a bootloop while you have not rooted using the tools provided in this thread...
[Android General] nikagl:
I couldn't find your ROM but found another when googling. You can try to install the following ROM using your recovery:

OS_Acer_AV052.RV08RC06.TWN.GEN1_A42J_A

Google the above and you may find a download...

Beware: flash the update.zip in the file using your recovery, do not use SPFT for this. There's no SPFT firmware avialable for your SKU afaik.

---------- Post added at 01:34 PM ---------- Previous post was at 01:28 PM ----------

Here's a mirror for the MTK driver in case you need it:

http://bit.ly/1hujx8o

---------- Post added at 02:08 PM ---------- Previous post was at 01:34 PM ----------

@shreps tipped me that the recovery install zips (OS_) are mostly available from the Acer support website too. Here's OS_Acer_AV052.RV08RC06.TWN.GEN1_A42J_A.zip
[Android General] ko thet90:
a1-811

Thank you for your help nikagl! But I get error :(

-- Install /sdcard/SD_Acer_A1-811_AV052.RV00RC00_AV052.RV08RC06_TWN_GEN1 ...

Installing update ...

Remove last update te_finish_update.txt...

assert failed: getprop("ro.product.name") == "a1-811_twn_gen1"

Installation aborted.
[Android General] nikagl:
Ehm... what are you flashing here? Where did you download the file from? And ... what recovery are you using to flash the file with? Probably the recovery has a different region / product.name compared to the rom you are trying to flash.
[Android General] luchaw90:
I download from the link OS_Acer_AV052.RV08RC06.TWN.GEN1_A42J_A.zip. I copy the fiel to sd card and then try to recover using updat.zip file. But i get above error.
[Android General] nikagl:
Any what recovery are you using? Stock recovery (from Acer) or did you update to a recovery from this forum? What recovery did you download and flash with SPFT?
[Android General] ko thet90:
I use recovery file which you give me above post(@shreps tipped me that the recovery install zips (OS_) are mostly available from the Acer support website too. Here's OS_Acer_AV052.RV08RC06.TWN.GEN1_A42J_A.zip).

I didn't flash with SPFT. I use only sd card.
[Android General] nikagl:
No, let me explain. You are flashing the update zip you mentioned above using the recovery of your device. So the program in which you select the above zip is called the recovery. This can be CWM, Carliv recovery or the stock Acer recovery (if you never updated the recovery, for instance to root the device).
[Android General] ko thet90:
:( what should i do for my dead device? I should recover with SPFT using recovery which you gave me?
[Android General] nikagl:
You are using two different logins on xda... you're making it very difficult.

Nevertheless, the recovery I gave you is not a recovery. It's the full OS update.zip file which installs the OS onto your device. The recovery is the product you are using to install that update.zip. I need to know what recovery you are using. Is it:

CWM-6.0.5.0_A1-811-eagleowl (ro.product.name=a1-811_ww_gen1)

CarlivTouch-recovery-3_A1-811_Shreps (ro.product.name=cm_mango)

A1-811-carliv-recovery (ro.product.name=cm_mango)

CWM-6.0.5.0_A1-811_Shreps (ro.product.name=a1-811_ww_gen1)

Or are you using [MENTION=5889030]FireDiamond[/MENTION]'s recovery?

Or did you never flash your recovery? Did you ever use SPFT? Or not?

Please make a photo of the program you are using to flash the update.zip with. Maybe I can recognize it!
[Android General] nikagl:
This for instance is CWM recovery from my device
[Android General] ko thet90:
a1-811

http://xdaforums.com/picture.php?albumid=12469&pictureid=50312

---------- Post added at 09:26 PM ---------- Previous post was at 09:20 PM ----------

I don't konw which kind of recovery i'm using :( I'm stupid :(
[Android General] nikagl:
Ok, that is stock recovery (no CWM/Carliv, etc.). How sure are you that you had a TWN rom on your device? I think the only way to flash your device is:

* Use SPFT to flash EMEA_GEN1 ROM

or

* Use SPFT to flash CWM/Carliv, change the assert check in the zip and flash the TWN rom

Just to make sure: you cannot bring your device to service/support? Just don't mention you tried rooting, they can flash in other ways too.
[Android General] ko thet90:
I can't bring my device to service/support. So i tried myself. :(

how to use spft and from where download emea_gen1rom? how to change the assert ;(
[Android General] nikagl:
Ok, I'll try to write some stuff down... give me some time and hold on :)

---------- Post added at 11:56 PM ---------- Previous post was at 11:35 PM ----------

One more question. Are you 100% sure you were on a JB (Jelly Bean, 4.2.2) TWN rom (you mentioned RV02RC22_TWN_GEN1)?

---------- Post added 4th September 2015 at 12:11 AM ---------- Previous post was 3rd September 2015 at 11:56 PM ----------

Download the following ROM in which I removed the assert check:

http://bit.ly/1N6bhrv

Copy the file to your SDCard.

Follow the instructions in the following post:

http://xdaforums.com/android/general/acer-ax-b1-t2875894/post60137778#post60137778

In the procedure do not download and install supersu, that's for rooting and a next step (why did you want to root anyway?). After you have installed and started recovery succesfully, flash the above file from your sdcard.

This last step will write the TWN rom to your system. You really need to be sure you had a TWN ROM!

If this still fails, next step will be to flash an EMEA ROM using SPFT.

Regards,

Nika.

PS. I won't be able to answer messages next 10 hours...
[Android General] Just_Another_N00b:
[MENTION=5889030]FireDiamond[/MENTION]: In the mentioned download-spflash-set there is only one single scatter-file, and the processor-number on that scatter-file is not the one in the A1-810. Will that scatter-file still work on all Iconia tablets? Just asking... ;)

The only problem I have with this unlocking, is that it is a closed set, so I have no idea what (else) it does. Call me paranoid, but [MENTION=3392632]entonjackson[/MENTION] toolkit/set allows me to look at the source and precisely know what happens when. I know what spflash does, but the image is kinda closed.

Sorry if this offends you, but it is not meant to.
[Android General] drmad:
b1-710 custom rom

Download link added for b1-710

http://xdaforums.com/showpost.php?p=55507880&postcount=58

Please test and report bug and suggestions, advice, for make a good rom for our B1-710! :o
[Android General] Mart5:
unlock A1-811

Trying to unlock my A1-811, everything works until I get to the last step (the Download), for the download is it only Recovery that needs to be checked or does Preloader (preloader doesn't have a path) also have to be checked ?, and if I press download I get a message (not all images are correctly loaded which may cause boot up issue)
[Android General] nikoeuren:
drivers

Where do I find the drivers.zip? Is it the USB driver found in Acers website?
[Android General] OtVang:
You can check in post #52 and #63

https://www.dropbox.com/s/2jrmeopoz04evjk/MTK Preloader Drivers.rar?dl=0
[Android General] nikoeuren:
Update the drivers.zip

Can you update the drivers.zip on Mega? The mirrored dropbox link in later posts is missing the installer.
[Android General] OtVang:
post #52

https://mega.co.nz/#!rFZ12TiQ!zed-BBRsEh0PY8eGFRiiabFCGruVUIqexPfrd9gVXpM
[Android General] Moriveon:
Psss, drivers was updated and re-uploaded to gdrive!
[Android General] Mart5:
A1-811

A1-811,stuck at step 17 (4pda) won't pass this step (Press "Download" and connect turned-off tablet to PC.), dont have preloader_unlock.bin, please help someone

---------- Post added at 02:01 PM ---------- Previous post was at 01:03 PM ----------

Hi, did you get your A1-811 bootloader unlocked yet ?, having same problem, If you do please let me know, thanks
[Android General] OtVang:
My tab looks like unlocked, I think find out the way to unlock it for both of JB and KK.

But, Let me go to the bed will be come back and report in tomorrow morning

*** p/s: CWM seem be is incorrect fstab - it can not see both of internal and external storage.

See you soon.
[Android General] merdjiwalid:
bootloop !

the best solution for the bootloop and other boot problems in iconia b1 devices is unlocking bootloader i tried that and works perfect

the question now

why there is no update for these devices ?
[Android General] Moriveon:
If you can help me, there will be a 100% working recovery for A1-811 in few days.

(Yes, working with Acers again :( )
[Android General] spljaa:
Hi,

I tried on my A1-811.

Upgraded to 4.4

And I hit error on step 14. (Press "Download" and connect turned-off tablet to PC.), Flash Tool strange error, like something not right with file.

I'm able to complete instructions for recovery. However after turning device off it goes to bootloop.

Regards
[Android General] Calingo:
Screenshot

Please Clearly Mention What errors You get With a Screenshot :good:
[Android General] OtVang:
Good morning!

For unlocking bootloader +CWM – I using all files and guide in post #53http://xdaforums.com/showpost.php?p=55501253&postcount=53 (thanks FireDiamond and 4pda.ru)

You need only modified some steps and keep in your mind – do not applying unlock and recovery in the same time. Unlock first, reboot then applying recovery.

For unlocking:

Before doing step 14 in that guide – you must have uncheck in RECOVERY check box and check in SEC_RO check box – you will be see pop up for choose a file and choose secuoff.img

Do all next steps as guide and reboot – now your tab had been unlocked bootloader.

For flash CWM:

You only power off your tab and redo all steps as guide.

For easier – I had been uploaded some modified tool in google driver http://goo.gl/MKqfql

In step 6.1 - You only need choose file “***_emmc.txt” in “1srt step” folder instead “811 Unlock and CWM” folder

All others are same doing

That applying for both of KK and JB (checked in my tab)

*&* For who want downgrade to 4.2.2:

You can downgrade and applying unlock bootloader by before goto step 14 you uncheck and recheck check box in SEC_RO and choose secuoff.img instead secro-sign.img

For flash CWM after unlocking bootloader – you might skip some steps (from 6.2 to 13)

Hope that helpful for you, confirmed that worked in my tab - but your tab: need you checking:laugh:

Keep your mind - you always can back to stock 4.2 as guide from FireDiamond:good: don't worry
[Android General] spljaa:
Hi,

I'm sorry for just writing "it does not work for me".

I'm attaching screens. #4 is with error message.

Zipped file is with sp tool logs, however somehow ctrl+alt+t did not start verbose logging, maybe I need to repeat it.

Regards
[Android General] spljaa:
Hi OtVang,

Thanks for more detailed instructions.

I'm still somehow lost in steps, and maybe I should wait for full instructions for dummies.

My goal is to unlock and CWM.

I did 1st round from your files.

Then 2nd round, skipping 6.2-13 points, without error, however I do not see CWM installed, orignal rescue mode.

Good thing is that it no longer bootloops.

I skipped reboot of tablet between steps...

Regards
[Android General] OtVang:
Hi Spljaa,

Please trying with all steps ( without skipping any steps)
[Android General] Calingo:
Easy

See how easy it becomesto resolve a problem when you clarify everything and tat images make it more easy so nice job :good:

Your solution :

You did not flash Preloaded you just tried flashing Recovery

So you have to flash both preloaded and recovery
[Android General] Mart5:
A1-811 unlock

Do you need to check Preloader ?
[Android General] ko thet90:
No, I have 4.4 kikat. I update my 4.2.2 to 4.4 kitkat last 5 months. I follow the instructions of this link http://xdaforums.com/showthread.php?t=2240029. RV02RC22_TWN_GEN1 rom is used to root (must be place in system.img.gz folder).
[Android General] wakang023:
hi guy's I'm using a3-a20 can u help me where can get the cwm for my tablet .. its already rooted using kingo root .. and I want to back.up my tablet using cwm .. please help me .. can u give me the link .. TIA more power ..

PS. I'll tried so many site to find how to install cwm ..

but nothing happens .
[Android General] nikagl:
When you flashed the TWN rom over de 4.4 system you reverted that rom to JB because that ROM is JB and not KK. That caused the bootloop.

Again the question: are you absolutely sure you had a TWN rom before flashing the one from the toolkit thread?

In the end we have a problem because we do not have a TWN rom for SPFT and that is the only 100% sure method to fix the tab.

Nevertheless, as your tab is not working anyway, you can try the previously mentioned procedure. But again: are you 100% sure you had a TWN tab before flashing the rooted-twm-image from the toolkit thread?
[Android General] ko thet90:
I follow your instruction but anything appear. I get for one hour follow as picture http://xdaforums.com/picture.php?albumid=12469&pictureid=50313 :(

---------- Post added at 11:26 AM ---------- Previous post was at 11:02 AM ----------

I have windows 10. This is problem?
[Android General] nikagl:
I don't know, sorry...anyone else?

Verstuurd vanaf mijn S56 met Tapatalk
[Android General] ko thet90:
Thank you for you kindness! I have driver problem. I solve driver problem instructions of this linkhttp://chinagadgetsreviews.blogspot.ro/2014/09/how-to-easily-unlock-bootloader-and_16.html. I successfull your all step (I don't download super su). but i don't know how to recover from sd card. http://chinagadgetsreviews.blogspot.ro/2014/09/how-to-easily-unlock-bootloader-and_16.html. I stop this step, help me!
[Android General] nikagl:
You're at step 19.1?

Verstuurd vanaf mijn S56 met Tapatalk
[Android General] ko thet90:
where step 19.1? :(
[Android General] nikagl:
You mentioned steps were successful and you mentioned following page:

http://chinagadgetsreviews.blogspot.ro/2014/09/how-to-easily-unlock-bootloader-and_16.html?m=1

What on that page did you do? Do you now have custom recovery?

Verstuurd vanaf mijn S56 met Tapatalk
[Android General] ko thet90:
Sorry, i wrong give link you. I found this link for solving my driver problem. I follow your instruction. How to recover recovery file from sd card which you give me. I stop this photo :( http://xdaforums.com/picture.php?albumid=12469&pictureid=50321
[Android General] nikagl:
Ok, that's good! So you are in carliv recovery. Did you insert an sdcard with the update zip? And this error occurs when you choose "install zip"? Did you use a <32 GB sdcard? Or did you only try with sideload from the PC?
[Android General] rivaasjose:
Hi!

I'm new here. I have an Acer Iconia tablet B1 710, He's in brick, or so I believe, since the turn on and stays on the Acer logo, however I can go into recovery mode but when I try to use the option of flash sd card for my tablet restarts, just turns off.

I tried flashing by the methods and guidelines that appear on this page, but without good results.

Install the SP flash tool, and install drivers belonging to my tablet MTK6577 do iconia b1 710. But it happens a problem, my computer recognizes the device but this is off the few seconds (3 to be exact) apart on the program sp flash tool I get the error 2004 ... try reinstalling the driver with a guide that appears on this page (xda) but unresolved.

That I can do to get my tablet? What is the solution for the problem to connect and disconnect my tablet pc? Why do I get the error 2004 sp flash tool? Why my tablet restarts when I want flash for sd card?

Really sorry my annoyance. And in the same way thank you very much !!

Thanks to all who have made this page and thank you very much for your help possible.

Pd: Annex multiple images that describe a little better what I describe.

Pd2: sorry for my bad English, I use google translator
[Android General] ko thet90:
Thank you very much nikagl. In carliv recovery i use 16 gb sdcard. I did try sideload from sd card and get error can't mout sd card in carliv recovery. Then I try CWM-6.0.5.0_A1-811-eagleowl and I found install.zip from sd card (I think everything is ok). So I flash recover which you give me (Download the following ROM in which I removed the assert check:http://bit.ly/1N6bhrv).

But i get error ( installation aborted). And i try to flash stock recovery from first page of this side (SDs_Acer_A1-811_AV0K0.RV00RC00_AV0K0.RV02RC06_WW_GEN1.zip). And then, I get my tablet. Thank you very much nikagl for your help. I can't get my tablet without your help. Thank you very much.:victory:
[Android General] Shreps:
According to your screenshot, you're not using the appropriate version of SP Flash Tool. You have to use the exact version from the guide!

Envoyé de mon B1-820 en utilisant Tapatalk
[Android General] rivaasjose:
good, I had already done what he tells me, he had tried vercion coming out in my captures and vercion the guide. but without success.

My main problem is that my tablet connects and disconnects. same here had read that there is to make a testpoint. (this according firediamond) but there is a guide developed for this procedure and it scares me testing without knowledge.
[Android General] Congpn:
Lost recovery mode

Can anyone help me?

My Acer A1-811 was updated to 4.4KK before, last week i wanted to reinstall by the custom ROM then i downloaded ROM 4.2 JB which i installed via SD card.

I got an error during installing, now my tablet was lost recovery mode and the screen shows a runing gear in an android robot, after 30sec running, it restarts automatically and repeat again and again..

I have tried to install by SPFT but the conection to PC was cut when the tablet restarting.

Can anyone help me to get back the recovery mode or any solution for this issue?

Thanks,
[Android General] nikagl:
What was the error? Power off device by long pressing power button or drain battery (long wait). Power on device and try to enter recovery. If that does not work, use SPFT procedure and flash one of the full roms available in the thread.
[Android General] mahan1373121:
hey guys

i have iconia b1-711 ! i want to update it ! but i couldnt find any good instruction ! please please please help me
[Android General] Congpn:
Thank you, i have reached into recovery mode and installed the custom ROM Kitkat 4.4

But another problem facing is the notice “Unfortunately the Process.com.android.phone" and then "Acernidus has stopped" appears,

Could you advise me how to install JB 4.2 instead of KK 4.4? Is it ok if i download the custom ROM JB4.2 into SD card and install via external storage in Recovery Mode?

Thanks,
[Android General] nikagl:
It all depends on which file you are flashing. What ROM version did your device have? And which have you flashed now? And are you sure you are on A1-811? Please make sure to post the full name including the region and branding (EMEA_GEN1, etc). Versions like:

AV052.RV08RC06_TWN_GEN1

AV052.RV08RC07_WW_GEN1

AV052.RV09RC03_EMEA_PKT

AV0K0.RV02RC06_WW_GEN1

Some versions for SD install include formatting the device and uploading a new boot, in other cases you'll need to use SPFT...
[Android General] Congpn:
Thank you for your support,

I don't remember the previous version, but I flashed the ROM AV0K0.RV02RC06_WW_GEN1 for my A1-811 last week then faced the errors

I have just tried to do factory reset and the last problem happened. :( the device constantly restarting itself so I cannot access to Recovery Mode. even I've unplugged the power cord for an hour, then reconnect and long press power + volume up many times.

It becomes a brick now :(
[Android General] nikagl:
I have never bricked my A1-811 and really did quite a lot of funky things with it. However, I always remembered what SKU (region/branding) my device has, as I am not sure what happens when you would write another SKU to it.

So... in your case... I would:

1. Hold power till it's off (sorry - again, this too always worked for me, it would turn blank after a while and fully power off)

2. Download a full SPFT and the full SPFT ROM from here:

A1-811-SPFT-V3.1308.0.sn125.zip http://bit.ly/1FBNrgP

A1-811-SPFT-ROM.zip http://bit.ly/1OGJDAe

3. Follow my guide, but instead of downloading unlock archive, use the above ROM and instead of only selecting PRELOADER or RECOVERY select all files at the same time (and do not install SuperSU :)):

http://xdaforums.com/showpost.php?p=60137778&postcount=529

Good luck!

Regards,
[Android General] Congpn:
Thank you very much for the detail instruction

I did these steps smoothly and can access to my tablet now,

And there's old problem arising which i had faced before, my toughscreen operate normally in about 1 minute after rebooting then it's stiff, no reaction when touching to the screen. and it restart after about 2 minutes.

Since the defect occurred after the new firmware reinstalled, therefore I guess it's hardware problem,

Anyway, thank you very much for your wholehearted support,

Regards,

Congpn

Hanoi, Vietnam
[Android General] Moriveon:
Reserved
[Android General] DexRox:
A1-810 tablet in brik

Hello I have a a1-810 tablet in brik. I followed this guide on a 32-bit Notbook Bootloader Unlock / Flash Preloader + CWM Guide FireDiamond. Write memory appeared in the green circle, but then during the download error 4032. I tried it on other devices, netbooks with windows 7 32 bit, Windows Desktop 8.1 64-bit and 32-bit Windows 7, another notebook Windows 8.1 64-bit. I tried it with the appropriate drivers for Windows 8.1, found here on the forum, and with the official website acer. Do not place the log files because I tried so many times to not remember which was the right one. The tablet had Android 4.4.2 (Acer_AVKO_A1-810_RV0BRC01_WW_GEN1)

sorry for bad English I translated with Google translator
[Android General] nikagl:
Same as my previous message for A1-811, I doubt your device is bricked. You can use the exact steps as in A1-811, use the same driver, use the same SPFT but use the following ROM (and not the A1-811 one I provided in the steps!!):

http://bit.ly/1gn7mtj

(I have modified the steps a little to make it clear)

If flashing does not work, with error 4032, make sure to use another PC, use Windows 7 instead of 8 or 8.1 use another USB port or another USB cable. For Windows 8/8.1 someone also mentioned you need to Disable signature enforcement if you're on Windows 8 / 8.1.

See also the errors in which error 4032 was already mentioned:

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.

Regards,

Nika.
[Android General] merxda:
Hello guys, i would like to ask how to root A3-A20FHD. Do we have already root source please? I've been looking since i bought this tablet. Appreciate your reply guys, thank you.
[Android General] wonbow:
please help rom flastool Acer_AV0K0_Z410_1.004.00_TWN_GEN1

I flash rom hangs Acer_AV0K0_Z410_1.015.00_EMEA_GEN1.zip and white logo stuck :crying:
[Android General] uioz:
welp wrong thread
[Android General] Vsx06:
I tried all available recoveries and sadly none of them can't mount SD :(

It's imposible that every sd i have & use in other devices is in some kind of conflict, right?

tried FAT, FAT32, NTFS (with 1 partitiuon and with additional ext).
[Android General] nikagl:
Just to make sure, at least one of the sd's was <32 GB? I did have issues too, but only with 64 GB sdcard...
[Android General] uioz:
test