yashsingh1/xdaforums huggingface dataset:
[Miscellaneous Android Development] Hamza91:
Need Help.

Well I am stuck on 0%.

I am following this guide to flash, http://xdaforums.com/showthread.php?t=1982587 FLASHING ONLY PART OF THE ROM

and it says "Please note that, even though it isn't mandatory to select it on the list of images to flash,

preloader file must be present in the same folder as the other partition(s) that you want to flash, or else phone will not be able to enter into download mode." and you didn't gave me preloader maybe that's why I am not able to flash it can you upload that too?
[Miscellaneous Android Development] drmad:
Ok, i'm uploading others files, preloader flash is not recommended
[Miscellaneous Android Development] Hamza91:
Thanks.

I wont flash preloader but I think it just needs to stay in that folder according to that guide?
[Miscellaneous Android Development] drmad:
https://www.dropbox.com/s/tjsdfwsqbrh7bre/files_for_spflash.zip

unzip in the first folder for reconstitute the full backup :good:
[Miscellaneous Android Development] Hamza91:
After trying for so long I can't flash it.

Please tell me instructions maybe I am doing some thing wrong :/
[Miscellaneous Android Development] drmad:
Are you in meta mode?
[Miscellaneous Android Development] Hamza91:
Do I get in META MODE before I press DOWNLOAD or after pressing it?
[Miscellaneous Android Development] drmad:
I do not know, I think we have to try, follow this guide: http://xdaforums.com/showpost.php?p=51671349&postcount=2868

to connect to meta mode and then open spflash and press download.
[Miscellaneous Android Development] Hamza91:
I don't know what I am doing wrong but after I plug my tab into computer sp tool starts flashing. The erd progress bar gets to 100% then my tab auto disconnects then reconnects then go into charging mode, because of this sp flash tool fails to transfer files.
[Miscellaneous Android Development] drmad:
I look for the error: S_BROM_DOWNLOAD_DA_FAIL (2004).

I found these possible causes:

1- That error is more likely a hardware failure. Use a different usb cable and com port and see it solves the problem

2- You should use a another version of SP Tool

3- using a virtual machine - not ok it seems. Using a PC it worked fine

I do not know if it is our case, hope to solve.
[Miscellaneous Android Development] superdragonpt:
If your bootloader is LOCKED, you can't flash anything via SPFlashTool.

The MTK backup from MTKTools is useless, you can't flash it back.

That's the way it works with MTK Boot loaders.

Regards
[Miscellaneous Android Development] drmad:
And about adb? Flash system.IMG via adb in meta mode work?
[Miscellaneous Android Development] Hamza91:
Can we flash via adb because I have root shell in meta mode with mtk droid"?
[Miscellaneous Android Development] fnldstntn:
Edit:fixed...
[Miscellaneous Android Development] drmad:
in adb the command should be

dd if=/sdcard/system.img of=/dev/block/mmcblk0p3

system.img is on sd, mmcblk0p3 is the system partition on my b1-710

try it and report here :good:
[Miscellaneous Android Development] Hamza91:
I am getting this error. Yes I putted system.img on my external sd card with the help of card reader.
[Miscellaneous Android Development] drmad:
Mount SD card first
[Miscellaneous Android Development] Hamza91:
Can you tell me how?

mount /sdcard

Not working for me.
[Miscellaneous Android Development] drmad:
Try storage/sdcard1
[Miscellaneous Android Development] Hamza91:
:'(

Not working :'(
[Miscellaneous Android Development] drmad:
mount /storage/sdcard1
[Miscellaneous Android Development] Hamza91:
This is the output
[Miscellaneous Android Development] drmad:
Try mount -t vfat /storage/sdcard1
[Miscellaneous Android Development] :
See image, may help?

You may need to click "ROOT" in MTK Droid Tool to do this (Yellow indicator on left side will go Green).

Now type these commands one by one:

adb shell

cd /mnt/sdcard

ls
[Miscellaneous Android Development] Hamza91:
Still the same output :/

Tried your way.

Still can't use the "dd" command
[Miscellaneous Android Development] drmad:
Try

cd mnt/sdcard2

ls

Do u see system.img in folder?
[Miscellaneous Android Development] Hamza91:
Yes I see

OMG you guys are best I got my tablet back :D

What I did was

cd mnt/sdcard2

Then tried this command

dd if=/mnt/sdcard2/system.img of=/dev/block/mmcblk0p3

After that is said successful.

I disconnected my tab and powered it on after 30 seconds I see home screen :D
[Miscellaneous Android Development] Wrightperspective:
Any possibility there are step by step directions somewhere from a to z on how to do this?
[Miscellaneous Android Development] drmad:
Great great great!!!!!!

We have fix the bootloop problemi on b1-710!!!!

---------- Post added at 08:34 AM ---------- Previous post was at 07:47 AM ----------

sure, let's wait entonjackson, we feel like he wants to proceed :laugh:

---------- Post added at 09:03 AM ---------- Previous post was at 08:34 AM ----------

entonjackson, you can put in your tool enables you to perform these tasks? To flash via adb also the system.img taken from your tool?
[Miscellaneous Android Development] entonjackson:
if an adb connection is possible, my tool can do this already.

i cannot integrate Meta Mode from another tool.
[Miscellaneous Android Development] drmad:
Flashing system.img via adb in meta mode

Then, for b1-710 the way to flash system.img via adb in meta mode should be:

1. copy system.img in sdcard (link to system image http://xdaforums.com/showpost.php?p=51716424&postcount=2897)

2. Insert sdcard in tablet

3. connect the tablet to your PC in meta mode and establish the adb connection following the advice given in the post

http://xdaforums.com/showpost.php?p=51671349&postcount=2868

http://xdaforums.com/showpost.php?p=51578861&postcount=2854

4. in the adb shell write the following commands:

cd mnt/sdcard2

dd if=/mnt/sdcard2/system.img of=/dev/block/mmcblk0p3

Thanks to:

- Gilly10 for the tips on how to connect in meta mode and adb connection,

- Hamza91 for the experienced the procedure
[Miscellaneous Android Development] entonjackson:
Or:

1. connect the tablet to your PC in meta mode and establish the adb connection following the advice given in the post

2. put system.img.gz into folder system_image of toolkit

3. root from image
[Miscellaneous Android Development] drmad:
Great!!

I think that we have solved a big problem for these tablets and we made a big step forward for flash custom rom!
[Miscellaneous Android Development] entonjackson:
Indeed!

Thanks again to everyone involved in evaluating Meta Mode.
[Miscellaneous Android Development] drmad:
In a future update of your tools, you can add a option of restore, even if by the same commands, the tool will be more clear and complete, what do you think?
[Miscellaneous Android Development] entonjackson:
If I understood right, I need a 3rd party app (MTK Droid Tool) for this. Right?

And that app doesn't understand command line arguments I guess, so how could I do that?
[Miscellaneous Android Development] drmad:
Yes, but you can add in tool an option "Restore" to use after the connection has been made with maui3g and mtkdroid (in manual mode), so that we for restore do not have to select "root from image" but "restore" or "flash system" or something like that, and system.img.gz should not be into folder system_image of toolkit (folder for the rooted image, right?) but in a new, special folder.

I do not know if I was clear, that's just my idea. :laugh:
[Miscellaneous Android Development] entonjackson:
ok, now i got you.

yes, i could do such a feature. but actually it's nothing more that a pseudo feature, as it actually does the same.

maybe i could do it in 2 or 3 monts as for now i have too much work.
[Miscellaneous Android Development] Hamza91:
Root?

But we should be rooted to flash the image? rite?
[Miscellaneous Android Development] MASVA:
guys

you are awesome

my b1-710 its alive,its alive....

thanks
[Miscellaneous Android Development] Hamza91:
Great

Great another success :D

Can you tell me wich system.img you used?
[Miscellaneous Android Development] drmad:
I Think yes
[Miscellaneous Android Development] MASVA:
i used B1-710_full_backup_stock_rooted image from drmad backup

http://xdaforums.com/showpost.php?p=51716424&postcount=2897
[Miscellaneous Android Development] Wrightperspective:
Do we think the same instructions would apply on the a1-810?
[Miscellaneous Android Development] drmad:
Yes, but for a1 must be verified the system partition and sdcard position
[Miscellaneous Android Development] entonjackson:
yes.

system image must be valid.
[Miscellaneous Android Development] Wrightperspective:
So would I be able to use one of the sytem images in OP or would I need to extract it from the .gz - OR would I need someone to get me their system image?

---------- Post added at 09:19 PM ---------- Previous post was at 08:51 PM ----------

I have everything installed and when I click reconnect and insert the USB into the tablet, I then turn on the tablet and it keeps looping. Should it be turned on before or after plugging into USB? Also, if on, should it just be bootlooping or in a certain mode from the recovery menu?

I have tried plugging it in while it was off and waiting. I have also tried plugging it in and turning it on. I can't get it to work. Grrrrrr.
[Miscellaneous Android Development] entonjackson:
Depends on what you want to do? You want to flash the stock image? then you need the system image for your device and your firmware.

The instructions by drmad say system.img so you have to extract the system.img.gz of course.
[Miscellaneous Android Development] KieranFoot:
Why aren't we advising people to use the images released by Acer???
[Miscellaneous Android Development] entonjackson:
are those system images that can be flashed over adb?
[Miscellaneous Android Development] drmad:
The adb-meta mode method should be used:

1. when the tablet is in bootloop and there is no way to recover it, if you have an acer firmware (for b1-710 is not there) and you want a stock virgin firmware is preferable use acer firmware

2. if someone customize your system (it lightens, or modification framework) can extract his system, and share it, we have the ability to flash it and possibly back
[Miscellaneous Android Development] KieranFoot:
Also, as I have found MT6589 source code online (Won't share here as it would break T&C's), and also have CPU pinout to connect jtag, I will be working on unlocking the bootloader again.

---------- Post added at 06:52 AM ---------- Previous post was at 06:50 AM ----------

The images provided by acer can be flashed from recovery. No adb needed. They are full ROM releases.
[Miscellaneous Android Development] :
Tablet should be off with nothing connected.

What I do is connect the larger USB end to the PC so it's ready then after clicking "Reconnect" I insert the other smaller end of the USB into the Tablet, may take a few tries but providing you have all the correct driver installed it should work.

Make sure the Meta Mode entry is checked/ticked in Options area of Maui META 3G as I shown in my image.

Also may be worth looking in Devices Manager to see if there are any errors with any of the drivers whilst connecting the Tablet in Meta Mode.
[Miscellaneous Android Development] drmad:
Vol + press while usb is insert in tablet is necessary?
[Miscellaneous Android Development] :
I initially thought it was but I tried again & I still got into Meta Mode without pressing Vol + button, so no don't think it's needed on B1-710 at least.
[Miscellaneous Android Development] Wrightperspective:
I'm having issues getting Android Gadget CDC driver to install. I'm on Windows 7 and I have tried it on two computers. Do I need a different program to install the driver? I unzip the file and the only executable file tries to install something for Windows XP and then aborts.
[Miscellaneous Android Development] Hamza91:
Try this

Right click on computer.

open properties

open device manager from left side.

Find cdc entry (There should be a explanation mark on it)

Right click on it and select update driver.

Click let me chose the destination to install driver.

Navigate to the cdc driver (Where you extracted it) and click ok.

Click next and it will automatically install.
[Miscellaneous Android Development] yatto:
A1-810 bricked (no power on)

Hello everyone,

I think I bricked my A1-810:crying:

This is exactly what I did:

I had a RV21RC02 firmware, rooted with the toolkit. Everything was OK. Then I disabled SuperSU to check the updates. I found the RV27RC03. I checked Voodoo OTA Root Keeper (a modified version which is meant to work with A1-810), it had the backup of the root. So, with SuperSU disabled, I let the tab do its update.

When it rebooted, it was stuck in a bootloop but still doing the update: It booted, ran several "optimisations", freezed, reboot, ran optimisations, etc., until everything was done. Then, it was purely stuck in a bootloop (but recovery menu was still available). Here, I tried to do a Factory Reset, twice, but nothing changed.

But I tried to fix it by myself (why did I do that ?). I downloaded the update "RV27RC03" from the first page of this topic, and I applied it manually from the recovery menu (with "apply zip from SD card"). So the tab made the update manually, everything was fine. I asked it to reboot, and... it doesn't power on anymore. I can try to push the buttons as long as I want, I even unplugged the battery and re-plug it, nothing works !

Then, back to my computer, I tried to plug it on the PC. Windows (since I use this, but I can install Linux if I have to, I have several hard drives) makes a little sound meaning that something is plugged in the computer, then it made this inverted little sound, meaning that something is disconnected from the computer. And this two sounds, looping. As if the tab was trying to power on, but something killed it. Then trying again...

Complementary informations:

I made some changes in my A1-810: I put some new fonts into the "fonts" directory (among others Times New Roman), and I changed the boot animation with RomToolBox. It worked perfectly, until this doomed day :crying:

I use Windows 8.1 32bits.

I can install Linux if I have to do it.

Thank you for reading my story. If you have an idea to save my tab...
[Miscellaneous Android Development] abstrkt1337:
You probably have an hardbrick. Since you running on the bootloader of the old firmware. The bootloader doesn't support the new fw i think.
[Miscellaneous Android Development] entonjackson:
Could Meta Mode help here?
[Miscellaneous Android Development] abstrkt1337:
It's a hardbrick. So no access to Meta Mode
[Miscellaneous Android Development] yatto:
No meta mode.

This is what I tried:

I installed the MTK VCOM USB driver (the one from MT6589, I think it is the same as the MT8125 of the A1-810). When I go to the Device Manager, I can see it periodically "Mediatek PreLoader USB VCOM (COM3)".Periodically, because my tab connects and disconnects to the PC every... well, it stays connected for nearly two seconds.

I tried to conect my tab with Maui META 3G. I did the following:

I launch Maui, check the "Connect Smart Phone into META mode", choose "USB COM". I click "Reconnect" then quickly plug the A1-810. I let the Device Manager window opened aside. I can hear the "device plugged" sound from windows twice, and twice the device manager refresh and sees nothing. Then I hear it a third time, and in the device manager I see the Mediatek PreLoader USB VCOM". And Maui tells me: "Communication through either RS232 or IPC error, please press [Reconnect]button to connect with target".

You were right, I cannot access META mode.

Other ideas ? If I find the bill, is there any chance that I can mention the french 1-year warranty ? Finally I just applied an official update, with two different "official" ways: from OTA and from official Recovery :/

Please if you have other ideas, I would be glad to hear them !
[Miscellaneous Android Development] abstrkt1337:
The only way is to send it in warranty.

I'm from France too
[Miscellaneous Android Development] yatto:
I'm quite busy, I will try this in a few days. I'm just crossing fingers that they will get my device working again. Otherwise I will have a nasty bitter taste...

Thank you for your answers, I will try that when I can.

I think I will not try to root my device anymore, it brought me more problems than solutions (even though I saw that Xposed framework runs on A1). Moreover Acer does not facilitate the operation neither rom backups (ha, thinking about CWM simplicity...)
[Miscellaneous Android Development] abstrkt1337:
Root is safe. But i think the OTA RootKeeper is not.

Feel Free to PM me if you have question.
[Miscellaneous Android Development] fREAST:
I had a very similar problem, had rooted mine and tried to update to a never firmware, it rebooted a couple of times like yours but i got stuck in a bootloop, i reset to factory settings, tried to apply an update via update from zip, and then like yours the tab just died.

So i went to the store i bought it from (Elgiganten in Sweden), and they took it in for inspection/repair.

And then about 1 month later i got it back, and they said it was a motherboard failure, so they had to switch it out, but now its working, and i have yet to root it because of the risk of bricking it again, but now when acer has released the full firmware updates, im a bit less worried because in case of a brick i could possibly recover quite easy.
[Miscellaneous Android Development] andrewbat:
Unrooting....

Hi [MENTION=3392632]entonjackson[/MENTION]

Is there any chance in bricking by following the above?

I have rooted through your toolkit on Lubuntu via 'root from scratch'...is this the best way to unroot?

Any advice appreciated...

Thanks :o
[Miscellaneous Android Development] entonjackson:
Should be safe.
[Miscellaneous Android Development] andrewbat:
Swype on A1-810

Hey gang,

Anyone else experiencing lag when using Swype on a rooted A1-810?

Can anyone suggest a BETTER keyboard to use please?

Thanks
[Miscellaneous Android Development] kazzxtrismus:
Swiftkey.. Best by far
[Miscellaneous Android Development] groovepeppy:
I have unrooted A1-810 with RV27RC04_TWN_GEN1

Which file do i get to ROOT my device without bootloop, cause i read if i choose other than the same version then i will get bootloop.

The problem is i can't find the correct version for my tab at the dropdown list in here (Acer Iconia A1-810 Downloads:)

Please help me
[Miscellaneous Android Development] Exnor:
Hi guys,

I want to switch my wifes Galaxy tab2 7'' for this one because of the screen size.

I have no intention to Root it so my questions are only about performance and comparison to the Tab2:

The screen AR is 4:3 or did i read the specs wrong?

Anyone knows how the battery performs using it for gaming?

Overhaul should i switch from the Tab2 7'' to the Iconia A1 8'' ? Is there any drawbacks? I know the SoC in the A1 performs a little better but how about the rest (like Screen quality, sound, materials, etc..)?

Any feedback is welcome.

Thks to all.
[Miscellaneous Android Development] alonsoch:
the link for "Invalid Partition Error" is down...
[Miscellaneous Android Development] aldolo:
yes, display is like the old ipad mini. same resolution. almost as good but at half the price. i have both...

antutu report 13282 as final index. not much compared to a galaxy4. for gaming i've no complains. i've more the 4 hours of playtime for sure. never measured to be honest. more then the 3ds for sure.

problems:

-low audio volume.

-bluetooth unusable for gamepad/wiimote because of the 4.2.2 android release

-hdmi output not perfect. there are 2 slices out of video on top and bottom
[Miscellaneous Android Development] entonjackson:
For me it works.
[Miscellaneous Android Development] superdragonpt:
Possible UNLOCKED Bootloader(s)

Hi Guys

Im working on something ...

Since i already got 2 unlocked bootloaders for my Memo pad HD7, im checking for diffs right now...

Can someone upload your stock (and locked) secro.img <-- This is your bootloader

You can get it with MTK DroidTools.

Also please check whats your MTK Build:

Check the following line on your build.prop:

ro.mediatek.version.release

Regards
[Miscellaneous Android Development] drmad:
B1-710

ro.mediatek.version.release = ALPS.JB.MP.V1.15

Hope in unlocked bootloader!!!!! Good Work :)
[Miscellaneous Android Development] Exnor:
Thks mate.

I think i'm going to buy one then.
[Miscellaneous Android Development] ehsan102:
can i use The OTG cable for this tablet ?

Acer Iconia B-711

please answer to me Soon
[Miscellaneous Android Development] gergishanov:
Guys i have iconia b1-a71 with RV04RC04 can i update to RV05RC05 from zip in post#1 via recovery ?
[Miscellaneous Android Development] superdragonpt:
Sweet

This was exactlly what i was expecting :)

The Mediatek version is the same as my Memo Pad hd 7 (also mt8125).

This means that the used source is THE SAME, the only diffs that may exist, are on the mediatek config (ALPS/camera semsors/etc)...

Regards
[Miscellaneous Android Development] entonjackson:
Good to hear. So the partition error can be caused by faulty formatted sd cards as well. Will notice that in Q&A on post #1.

But please give me the download links for the firmware updates, as i cannot see them!
[Miscellaneous Android Development] nick_1964:
Good to hear you have your tablet back, did you format the card from the acer device or computer ? Strange thing, before all the rooting problems with RV04RC04 i formatted a range of cards with fat32 and still got the problem, I tried with an update to RV05RC05 ( still have it ) because I can't find full version of RV05RC05

I do have the full version of RV05RC06 but sure I would full firmware of RV04RC04 and RV05RC05 just to have it save.

since there is no changelog to, I don't know what the differences are, but I put a RV04RC04 and a RV05RC05 next to each other and try to get a satellite connection, the 04 was locked to GPS in 1 minute, the 05 next to it, didn't get a lock at all...
[Miscellaneous Android Development] Min Thura:
Here are the links from Acer. They work for me..

RV03RC05

RV05RC05

RV05RC06

I formatted sd from computer with linux gparted to fat32. I also tried with adb from recovery menu 2nd option to send update zip to tablet from computer, and also showed partition error. So, I "think" this is not concern with sd card partition format. But I think it could be because of factory reset before applying update zip. Any way, I got my tablet back from boot loop..
[Miscellaneous Android Development] smoosh27:
could you make a video tutorial on how this works im kinda confused?? sorry noob here
[Miscellaneous Android Development] entonjackson:
No. I won't make one.

Why?

Because there are too many different devices and firmwares. I had to make 10 videos for each configuration.

What's the problem? read the 1st post, download the toolkit... ask!
[Miscellaneous Android Development] zyche:
could it possible to update first the firmware to latest RV05RC06 before rooting and using the same image.gz to put in the toolkit?
[Miscellaneous Android Development] agentdeep:
Yes, if you won't encounter the "invalid partition setting" error when updating.
[Miscellaneous Android Development] nick_1964:
Firmware updates: I gonna try to find changelogs, and update this post.

AV051.B1-A71.RV03RC05.WW.GEN1

1.Fix skype can't log out issue.

2.Fix Netflix can't playback issue.

3.Have workaround for brightness issue.
[Miscellaneous Android Development] agentdeep:
Sorry to ask here, but I found this thread http://xdaforums.com/showthread.php?t=2187363

Enton, you think this will work on Iconia?
[Miscellaneous Android Development] entonjackson:
I think the special trick of this script is the "chargemon" hack, which sounds very specific to the Xperia Z.

But let's see what he will answer to you.