yashsingh1/xdaforums huggingface dataset:
[Android General] wbrambley:
If anyone wants viper 4 android flash this: http://xdaforums.com/showthread.php?t=2973260

3 options, I picked the super and it's working well.
[Android General] jparker274:
Acer B1-710

I have a rooted acer b1-710 and I am using the guide for CWM and unlocked bootloader. I have everything installed correctly and my tab and pc see each other as long as the tablet is turned on. If I turn tab off, it disconnects from pc. I can hear it connecting and disconnecting at times. When I run spflash and start to write memory, I get the red progress bar at 100% and then error. at the same time I hear my tab connecting and disconnecting over pc speakers. Is there any way I can flash with the tablet turned on? any help is appreciated. Tanx!
[Android General] jparker274:
Still can't get my tablet to stay connected to PC while turned off. If it is turned on, it is fine. What do I do? I really want to unlock the bootloader and get to some custom roms. Tanx
[Android General] 1TruckParade:
The PC reads only powered up USB ports. When your tablet is turned off, and no power goes to your USB cable, then your PC won't read or recognize your tablet.
[Android General] shadow252:
I don't think so, because tablet MUST BE TURNED OFF to flash CWM with SP Flash Tool.
[Android General] 1TruckParade:
You would be correct with flash memory,something a tablet has,and if you are doing a function involving the flash which requires no internal power it is treated like a USB flash drive which also has no internal power. An external hard drive if not powered will not read through USB,same as your phone unless you are doing a flash function. USB responds to power draw.
[Android General] Shreps:
You should try to unplug or disconnect your battery and then try the Flash process

Envoyé de mon One+
[Android General] nikagl:
Right, but as soon as you turn the tab ON, the power is turned on and the SP Flash Tool tells the device to go into loading state...so power is only available on the port when the device is ON.
[Android General] wbrambley:
Open the back of the tablet, unplug the battery pack for 30 seconds.

Plug battery back in.

Hit flash on SPFlash tools before plugging USB in to tablet.
[Android General] sebasrock156:
Hey There All, I need help for this.

Apart, I want, give you a notice: Have us JB 4.2.2 for B1-A71 :D

But, the Touchscreen don't works correcly :( (F*cked Issue)

I was test with 4PDA.ru Kernel and "fix" Libs, and nothing

(Kernel works and booting the ROM; Libs gives Softbrick, boot infinite stay).

In final, I'll leave 'u a Video...

Greetings and I still somebody can help us.

[YOUTUBE]j9zQVoKnIZw[/YOUTUBE]

*Sorry for my bad English, world xD *
[Android General] Moriveon:
I tried to port 4.2.2 in November, 2014 (actually it worked very smooth, but I gave up, because I'm the laziest bastard in the world).

For me, kernel worked OK (no touchscreen issues) ONLY after flashing it via SP Flash Tool.

So, you can try to flash your ROM using recovery and then flash the custom kernel.
[Android General] sebasrock156:
Something... Well... Could I flash the Rom and Cust Kernel with SPFT for Touchscreen work normally?

Or simply, try us solve the Touchscreen issue after to Install vía CWM?

Edit: Flash Kernel with SPFT don't work, the Tab is same :(

Try us to solve this, please, or talk with the 4PDA people...
[Android General] hAmerikaneca:
Hi on A1-810 After unlock and CWM can't use sdcard

Hi all.

I have a Acer A1-810 which i unbricked last month i did follow the guide on post 52 and all ok then i did a Unlock+CWM Recocery but now when i go to recovery i can not mount the SD card please help what did i did wrong, and also i installed SuperSU and Busybox with "adb sideload" under recovery. I tried with a factory reset from Recovery but same thing. Thanks And just one more question on A3-A11 can icall phone numbers after unlock or root thasnks
[Android General] jimmytwotimes.parker:
I tried your suggestion but got same results. I cannot use spft with tablet off. Keep getting same BROM failed error after 100% red bar.
[Android General] jitThink:
A1-841

How about A1-841? Can I use this useful guidance?

Many thanks!
[Android General] wbrambley:
Any chance there is another driver interfering with it? Can you try on another PC or even connect it to a clean xp or win7 VM using virtualbox?
[Android General] martythebrit:
Any news on a root for the A3-A20FHD? Just bought it and I've never had an Android device I couldn't root.. this sucks.. :(
[Android General] luiguzman23:
Any news for ACER Iconia 7 740?

Enviado desde mi GT-N7100 mediante Tapatalk
[Android General] martythebrit:
I just tried Kingo ROOT V1.3.0 on the off chance it would work, and it did!! :D I now have a rooted Acer A3-A20FHD... SWEET!!
[Android General] jacky ni:
Help !!!

Could you help me?

Please given me the A1-841 HD Root step with Root file!!
[Android General] vache:
For Intel based device, like A1-840(1)(FHD), you can try using this method : http://xdaforums.com/android/development/guide-root-acer-iconia-tab-8-a1-840fhd-t2933317

It works for most Intel devices, including Acer one's.

For B1-740, check this post : http://xdaforums.com/android/help/root-acer-iconia-one-7-b1-740-steps-t2866575
[Android General] _Tallis_:
A3-A20FHD is not Intel based, it has a Mediatek chipset!
[Android General] vache:
That's right sorry, i'll edit my previous post.

I'll try to find a method to root this one.
[Android General] _Tallis_:
There is already one: KingoRoot v1.3 can root this tablet. Did it just this morning! :D First thing I did after rooting was to install Adaway. Finally adfree browsing! Now I'm thinking about installing XPosed, but I'm afraid of a bootloop.
[Android General] JPL1286:
Hello, I just tried kingoroot on my a3-a20 and it does work :) oh and there is NP with xposed.
[Android General] Shreps:
For A3-A20, A3-A20HD, A1-841 which are MTK based devices, we can try to pack a custom Recovery

but we don't know if the preloader is locked or not.

If it's locked, the tablet will not boot until flashing back the stock recovery.

We will try to look at it with [MENTION=1829889]vache[/MENTION] & [MENTION=5889030]FireDiamond[/MENTION]
[Android General] _Tallis_:
Do you mean if the bootloader is locked? With A3-A20FHD I can tell you that the bootloader IS locked, indeed. Which is a shame for Acer. :mad:
[Android General] jimmytwotimes.parker:
[MENTION=404643]wmb[/MENTION]rambley, Yes, I've Tried on a win7 laptop and xp pc and get same results. Tablet will consistently connect And disconnect when plugged in while turned off. If it weren't for that, I'd probably be Good.
[Android General] jitThink:
A1-841

Many thanks all in advanced!!

I have tried with Kingo ROOT but not work, the device keep rebooting forever.
[Android General] nikagl:
If they are MTK devices, do they have MTKLogger? In that case it should be possible to do a root from scratch with Ubuntu. Export Rom with dd, modify system in ubuntu and restore Rom back with dd.

Verstuurd vanaf mijn A1-811 met Tapatalk
[Android General] _Tallis_:
Which device? A3-A20FHD got an firmware update today, which - guess what - removed root and broke the ability to root it with KingoRoot. I didn't update mine, luckily, so I still have root. :o

---------- Post added at 03:28 PM ---------- Previous post was at 03:26 PM ----------

Tried that before, didn't work. Su was in the right place with the proper permissions, but still no working root. KingoRoot did the trick, though.
[Android General] nikagl:
I have added the ability to use SuperSU with the root from scratch method. If it didn't work before, it might work with my version? It hadn't been added to the first post, so make sure to check out the last ones in the thread.

I also tried KingoRoot on latest KK version of A1-811 but other than a new app on my device, it didn't add anything....

Verstuurd vanaf mijn A1-811 met Tapatalk
[Android General] _Tallis_:
Since I'm already rooted I can't test your version, sorry. Maybe someone else can try it and tell if it works your way.
[Android General] jimmytwotimes.parker:
I used key master root on my acer iconia b1710. Works great.
[Android General] jimmytwotimes.parker:
I have a question. How can I unroot my tablet for a safe factory reset?
[Android General] nikagl:
Hi all,

Not sure whether it was mentioned before but I tried the "Unlock + CWM [A1-811]" steps from the "Firmwares for flashing - [EN]" guide ("4.2 + 4.4 Unlock" with secuoff from december 3rd), and it did not work on my device. SPFT generates BROM error 6045 S_SECURITY_SECURE_USB_DL_IMAGE_SIGN_HEADER_NOT_FOUND (From LOG: SEC_IMG_MAGIC NOT CORRECT (0x52444e41 != 0x53535353)).

I did manage to root the device using the toolkit (but without R/W to /system and can't get Xposed to run). Updated version in the toolkit thread (incl. R/W for External SDCard).

Regards,

Nika.

---------- Post added at 01:56 PM ---------- Previous post was at 01:52 PM ----------

Btw, 0x53535353 is byte 0x4000 in both the secro-sign and secuoff images. Guess my device is returning 0x52444e41 ?
[Android General] ghochenk:
iconia a1-811 error "no command"

to all masters of iconia a1-811

i need help solving a1-811 issue

since the 1st time i bought this tab, it never get rooted, nor update os, just as it is from the beginning

it has been in my wife possesion about a year now, and suddenly it "hang" while my wife playing LINE: Get rich

i've try to reboot it, but it gets bootloop, try to recovery mode, set to fastboot mode, then using opo n choose "reboot fastboot"

when it boot normally, i try to go to settings, but it suddenly "hang" again.

i try to reboot manually by pressing power switch, but nothing happen, so i'm using that pin hole next to sim card slot,

then trying to enter recovery mode, but it get stuck in "no command."

i've tried power + vol up, or power + vol down, it still on "no command", i cannot get into recovery mode or download mode, seems like there's no effect on presssing power n vol key, and i've repeatly reboot using pinhole several times becoz the power button seem wont get it off / reboot..

also it wont detected on PC..

plz help, what should i do.. sooo desperate.. :crying:
[Android General] martythebrit:
There was a small update for the A3-A20FHD last week, unfortunately it killed the Knigo Root. Apparently Kingo are aware of this and are working on a fix. Hopefully soon...
[Android General] jimmytwotimes.parker:
My acer b1-710 is rooted via key master root. I have tried to flash cwm and unlock bootloader but my tablet will not state connected to pc while turned off. It connects then disconnects.
[Android General] nikagl:
You could try to remove the battery? You will need to pry open the back (white) side. I have done this by using a creditcard and prying it between the silver and white, starting from the USB or SIMcard port. Do it carefully and off course without USB or SIMcard inside. It should come apart eventually. Inside the tab there's a big battery and a connector. You can remove the connector, wait a few seconds and reconnect it again...

Find yourself some "screen replacement" movies. Just search for A1-810 screen replacement and you should find it. It also has instructions how to remove covers and battery :)

Good luck!
[Android General] jimmytwotimes.parker:
I removed battery and still same results.
[Android General] nikagl:
That instruction was for [MENTION=2164118]ghochenk[/MENTION]. In your case I wouldn't know, sounds to me like your USB port is broken? Tried it on another PC and/or USB port too (in case it's the port of the PC)?
[Android General] jimmytwotimes.parker:
Yup did that too. Same result. Tanx tho
[Android General] nikagl:
Also try to explain your problem a little better. It has the USB issue only when turning off?

Flashing using SPFT requires the USB to be disconnected, device turned off and then connect USB to get it to activate the flashing process...
[Android General] jimmytwotimes.parker:
When I do that, I get thru the first red line at 100% then get BROM FAIL error.
[Android General] nikagl:
Which error number. Log please.
[Android General] jimmytwotimes.parker:
Just did it. Here's the result!
[Android General] nikagl:
Please check [MENTION=5889030]FireDiamond[/MENTION]'s flashing guide (sections "Fixing reconnecting" and error #4032). It also includes your error and steps to (hopefully) fix it.
[Android General] jimmytwotimes.parker:
Tanx, imma check it out. I'm running out of internal memory faster and need a clean start but can't do without unrooting or getting this to work.

---------- Post added at 12:15 AM ---------- Previous post was at 12:07 AM ----------

I can't find it. Can you point me in right direction?

---------- Post added at 12:45 AM ---------- Previous post was at 12:15 AM ----------

Tried his suggestions and still get 2004 error, but tablet boots right afterwards.
[Android General] ghochenk:
tried remove the battery connector, still same issue.. :(
[Android General] ghochenk:
thx for your fast reply,

tried all the suggestions,

change usb cables, usb port , also changing pc, still no detect

it seems like it get stuck in "coma" mode..

also the hard keys cannot do any effect, I had to use that pin hole to get it shut down..

when the cable usb plugged in, it automaticly power up, showing acer logo, n goes to blank screen with only "no command" words. no android image..

can linux solve this? using only history usb port n cpu Id to trigger it?

if it does, can u show me the tutorial?

I'm never had the ability to operate linux..

sorry for may bad english
[Android General] nikagl:
I wouldn't know other than to flash the Firmware for Recovery and/or follow the guides mentioned in "Firmwares for flashing" and "Unlock bootloader + CWM" (see first post and click on the guides). If those don't work... I'm afraid the only thing you can do is contact Acer Support...

The only advantage for Linux is the possibility to mount img files created with DD on the device. But for that you need to be able to boot it :)

Stuff like cpu ld, using test points on the board, jtags, etc., I have no experience with.... maybe others?
[Android General] malkthealk:
I have an Iconia Acer B1-A71. I stupidly used ES File explorer to mount and modify a file 'build.prop', but didn't hit mount again to get back and rebooted. Now I am stuck on the Iconia screen at boot up. I can get into recovery, but don't have anything prepared on my sd card. The result is when I connect via usb to computer it connects and disconnects.

Any suggestions please, I have been 4 nights at this.

Malk
[Android General] ghochenk:
after trial n error, continue browsing looking up for answers for 1.5 days (also makes me dizzy)

and finally found this thread

thank you very very veryyy muchh!!!

my wife's a1-811 can be resurrected thanks to your post!!!!!!!!!

have a marvelous day to you sir!:good::highfive:

God Bless
[Android General] Shreps:
Push a firmware zip on your sdcard with your PC, and flash it via Recovery :)
[Android General] malkthealk:
Hi many thanks for giving me hope?

I assume it is the RV04RC04 file? (That was the firmware version before)!

Also (being a newbie, so please excuse my ignorance), do I unzip the system.img.gz file first before copying to the sd card or put it on as it is? I also do not have a clue as to what I do after that or should the tablet work ok? Just re installing stuff etc?

Once again, my apologies.

Many thanks. I was almost ready to give up with it.

Malk
[Android General] jimmytwotimes.parker:
I have a acer b1-710 that is rooted and it connects and disconnects as well. Could I use the factory recovery to unlock the bootloader someway or at least reflash original rom. I am running out of internal memory and need a clean start but have no way of safely factory resetting the tablet or unrooting it. Tanx in advance!
[Android General] y2k-inc:
Unlocked my A1-810 and flashed UPDATE-SuperSU-v2.02.zip, busybox also installed OK, but somehow, look like System Write is not working ATM? I have saw somewhere that they have found the solution for this?

Thank you all for this wonderful hack, i.e, work :)
[Android General] Optimissimus99:
Okey, My german guide on android-hilfe.de was Updated for A1 811 ( And I added Iconia Devils credits :cool:):

German Unlock Thread

[MENTION=3689405]y2k-inc[/MENTION]

Yes, for System RW we need 4.4 Kernel Source from Acer. I hope they'll release it soon so that the module can be compiled soon by someone
[Android General] 8ivanhoe8+):
S**t!! It`s intel based :crying: !!

But thanks for your reply
[Android General] Hamza91:
Gimme :p

I'll test ;)
[Android General] abstrkt1337:
A deodexed image for B1-710 is already available.
[Android General] DustArma:
Okay so, I fixed most of the bugs on the PhilZ Touch recovery port so I'm releasing it now.

I'M RELEASING THIS AS-IS, WITH NO WARRANTIES WHATSOEVER, I AM NOT RESPONSIBLE IF YOU BRICK YOUR TABLET

REMEMBER TO MAKE A BACKUP OF ALL OF YOUR PARTITIONS USING SP FLASHTOOL

FOR BOOTLOADER UNLOCKED ACER ICONIA B1-A71 TABLETS ONLY

[MENTION=5747921]abstrkt1337[/MENTION] reports that this works on Iconia B1-710 tablets too, again, try it at your own risk.

This was compiled using the instructions PhilZ Touch MediaTek Recovery thread, I just followed the instructions and did some tinkering. You can follow the instructions there to port PhilZ to your MediaTek tablet of choice, I do not have any of the other Iconia MediaTek tablets so I won't build it for those.

TODO: Figure out a way to display the recovery in portrait rather than landscape mode.

You can flash this using Flashify, if anyone wants to create a flashable zip out of this they're welcome to do so and post it here.
[Android General] Moriveon:
[MENTION=3883883]DustArma[/MENTION], is touchscreen works properly? And thanks for your work, I'll make a flashable zip...
[Android General] DustArma:
I've been testing it and the touchscreen seems to be working properly, I had to use the RECOVERY_TOUCHSCREEN_FLIP_X and RECOVERY_TOUCHSCREEN_SWAP_XY flags when compiling.

*EDIT*

Touchscreen doesn't work properly in Aroma Filemanager
[Android General] josfer:
The driver is not installed and it shows me an error that the device is not connected, the device also not shown in the device manager, I have windows 7 and a1 810
[Android General] modjtabaf:
Hi, I have an A1-810 which is upgrade to 4.4. AFAIK, it is officially impossible to revert it back to 4.2. Can what you are doing help in downgrading from 4.4 to 4.2?
[Android General] Bruno25:
Kernel has to be patched or a specific kernel module has to be developed based on the kernel sources.

Just waiting for Acer to release the kernel sources (French Acer support said it was on going... Russian Acer support said so...)
[Android General] OtVang:
Please help,

I tried download and running tool as guide in that post in 4pda.ru so did not success.

Passed over step 12 but always error at step 17. and must have go to step 19.2 :crying:

I must have using rescure mode - but this mode seem be using Acer default :laugh:

my tab is A1-811

Thanks!
[Android General] Moriveon:
Another awesome post

Reserved.
[Android General] gansolc:
a1-810

plz guys need help :(

acer iconia a1-810 with kitkat.

and now stuck in a bootloop.

- not recovery access

-already tried press small pin hole using paper clips and no luck.

the tablet boot I see the acer logo,it vibrates and then restarts...

SORRY MY ENGLISH !!
[Android General] abstrkt1337:
I tested it on my B1-710, it's working fine too
[Android General] drziddo:
Thanks to the OP and everyone involved.

Please please please an english how to unlock bootloader for b1710.

Thanks in advance!
[Android General] Moriveon:
Guide on 4PDA already in English (and Russian), you should click the "[EN] Guides" spoiler.
[Android General] drziddo:
Do you mind posting a link?

Thanks!
[Android General] Moriveon:
[MENTION=2660441]drziddo[/MENTION], oh, I'm so sorry, here's the link.
[Android General] gansolc:
bootloop

.i already solved the problem with Guide: Unlocking bootloader and installing CWM

but have not Unlocking bootloader..I'll try again tomorrow
[Android General] malkthealk:
I've copied the image file to the sd card but when Update from Sd card the file is not there? Is there a specific extension it is looking for? I renamed it to zip. I also copied the original ???.img.gz file which I can't see either in recovery.

Am I glaringly missing something?

Malk
[Android General] malkthealk:
UPDATE:

Got an update.zip file (correct firmware). Selected Update from SD Card.

Selected file and tablet eventually displays menu 'Reboot system menu' and 'Apply sdcard:update.zip'

I Selected the Apply option and get a different listing on the sd card, no zip file visible??????

Rebooted and still the same problem? Please help someone?

Malk
[Android General] Shreps:
Did you put the update ZIP on your external SD card ?

It should be visible by the recovery

Envoyé de mon One+
[Android General] malkthealk:
I installed it onto my sd card. Then put the sd card back in and selected 'Update From Sd Card' .

The update file was visible and I selected it.

Next, I got a menu with 2 options. 'Reboot' and install from 'Sdcard:update.zip' I select this and there is no update.zip available? I am thinking it may be trying to read from a different partition the second time? I don't see another partition when writing from the computer? (Windows 7).

Malk

---------- Post added at 08:04 PM ---------- Previous post was at 07:39 PM ----------

I meant to say EXTERNAL sd card yes. The update.zip file is on there. After I select it though, I get the other menu as I said asking to Apply sdcard:update.zip and when I select that I get no update.zip file visible, only what seems like a different directory/partition!

Hope that makes sense?

Malk

---------- Post added at 08:30 PM ---------- Previous post was at 08:04 PM ----------
[Android General] malkthealk:
Maybe I should add? Before this I had JB on the tablet and it was rooted. I don't know if this makes any difference to what I should be trying to install as a system.img (or update.img)?

It can be a bit confusing reading threads as one minute we are talking about one model then another and another etc.

Please advise. It would be easier to install from the SD card I think as I have a problem with the windows driver connecting to adb. Like many others I have seen on here, the usb appears for a few seconds and disappears again.

Malk
[Android General] malkthealk:
Hi again, can someone tell me if it is all possible to just update from the SD card with the same firmware file (version)?

I am trying this but after selecting the firmware zip, it then prompts me again for the sdcard:update.zip file? Only this time from the ext4 partition on the sd card? I'll try tonight to copy it there also in case that works?

I still cannot use the adb method as my PC refuses to update the driver no matter what I try although the USB icon in Device Manager is yellow?

Malk
[Android General] Shreps:
Flashing a full firmware with recovery should works fine. If you have any trouble with this, you should flash a full firmware with SP Flash Tool (Guide on FP).

BTW, FP updated with many new Firmwares for recovery files.
[Android General] malkthealk:
Thanks Shreps, I didn't know the FP had been updated?

As for the guide, I had tried this before, but the problem still remains with connecting to the tablet? I have tried about every driver and method I have found in these threads, but it's like the tablet connects, but then disconnects, leaving no time to even try and install a driver when it's alive? I'll try again tonight when I get home from work.

Cheers,

Malk
[Android General] malkthealk:
OK, gave it another go on a different machine and I still get the error BROM [10] which must be a USB error which I assume means it can't see the device again?

Any possible solutions anyone please? This is doing my nut in. I have tried this on 2 PC's and 2 laptops now.

Malk
[Android General] jimmytwotimes.parker:
Same here Malk. If there is a way to flash custom recovery and unlock bootloader via sd card that would been great.
[Android General] Moriveon:
For performing a "Firmware→Upgrade" you need to check ALL availabke blocks, I quoted a log line says a PRELOADER block is missing/unchecked.