yashsingh1/xdaforums huggingface dataset:
[Miscellaneous Android Development] nick_1964:
Errors on acer

I asked acer for the differences between firmware.

Got a beautiful answer ( NOT) but important for here:

Error invalid partition when updating Android

Only for: Iconia B1-A71

When trying to install the latest available update for the Android system on the Iconia B1-A71, the installation might stop with an error "Invalid partition setting".

Solution:

There is currently no solution available for this error. The update has been made unavailable and will be made available again when this problem is resolved.

If you already encountered this problem, we recommend to not further try to install the update, but instead wait for the new update.
[Miscellaneous Android Development] entonjackson:
Well this is not much helpful, but it means, the device is not generally defective and can be repaired with a software update. Which is good.
[Miscellaneous Android Development] nick_1964:
Thats why I shared it, I ask the question about different firmwares again.

But the OTA has problems to !

RV04RC04 must say there is an upgrade: RV05RC05 and it doesn't

But, it explains why all the firmwares are offline from the normal support sites, and it explains the partition error, in this case there is no need to figure out how to bypass, it's an Acer problem, not a safety thing.

There is a link you can press on to keep updated, I did so when there is news about the error, I will share it.
[Miscellaneous Android Development] zyche:
thanks agentdeep.

after rooting can we update the firmware from RV04RC04 to RV05RC06, will it remain rooted?
[Miscellaneous Android Development] nick_1964:
From Acer : RV04RC04 is older firmware and should be replaced by RV05RC05, but that update is currently not available by the problems with the partition error, the problems are in the upgrade.

It gives a partition error because it wants to try save user data to the internal memory of the device, thats why it works after a factory wipe, there is no user data to backup... the same error is also in the RV05RC06, the reported format of the internal memory is faulty, it has nothing to do with the sd cards and formatting it.

They are a bit vague about RV05RC06, it is reported as unstable, but they can't say what that means, it can be the same error with the install thing, but it also can mean that there are more problems with it, so my advice is to stay on your current firmware or RV05RC05, but leave RV05RC06 for what it is until we know more.

RV04RC04 are not faulty devices, they just fall back on the safest firmware.

Update:

I told Acer about my findings about storing userdatabase and restoring and they confirm: the problem with the "Invalid partition setting" occurs only for devices with user data on it.

Because the userdata what is stored, changes the amount of data on the device and that is why the build in check doesn't work.

When the device is in factory settings mode, the checksum is correct and it installs..

So update from RV04RC04 to RV05RC05 is possible when the device is put back to factory settings.

Acer is now working at a solution, now they know what causes the problem.

Disclaimer: I do not work for Acer !
[Miscellaneous Android Development] DarrellW94:
I've only received my Acer Iconia B1 today, but I'm keen to get it updated and rooted.

After reading this, I did a factory reset and tried to install RV05RC05 and RV05RC06 (both after resets), both giving me the partition error.

So is this something device related or update related?
[Miscellaneous Android Development] nick_1964:
Depending of you use the google settings for a factory reset, of the reset from the "resque tool" ( power and vol. up ).

I did it from the rescue tool, set the device to factory settings, then reboot from that yellow menu,but again held power and volume up together then upgrade again.

If you let it reboot and start completely, then there is userdata on it and you get the error.

Be aware that your data is lost by this kind of upgrades.

Acer removed the updates and that is not for nothing,maybe they come with a fix that is not compatible with your version, Acer also says that the latest firmware in their database is RV05RC05 so I think that it's unwise to go to RV05RC06, maybe you lost all future updates or their fix doesn't work on it.
[Miscellaneous Android Development] DarrellW94:
I did a factory reset from within the Android OS (settings), which "deletes InternalSD" whilst the device is still within the operating system, and then proceeds to wipe Data and Cache in the recovery mode. It then reboots, and this is when I pressed power-on and volume-up to boot into recovery, so it never actually went back into Android.

Very confusing how it works for some but not others, I'll take it we have no timescale for the next update?
[Miscellaneous Android Development] nick_1964:
In this case I would 2 times do the factory trick ( power on and volume up) because I think at the first reboot it go's in factory mode (after the reboot, not when you pressed the button).

You erased from the system, then reboot into recovery, did the factory settings, but don't reboot to load them,after that you tried to upgrade.

You always have the Dalvik Cache that stays present when you delete stuff and stop programs so do it that way is not the good way to go to factory mode.

I don't work at acer, but my 10 cents: they will not make such a hurry... it works, and when you try to control for software, it says there is the newest software present.... only when you check internet you maybe can find this threat, but without the upgrade the device still works good, so maybe 5% discovers that the upgrade function will not work right... it is not the most expensive device, there are more devices...
[Miscellaneous Android Development] DarrellW94:
No such luck for me, I'm just getting the same partition error each time. Looks like I'm just going to have to make do!! :( It is not something that I could get a replacement device for is it? Or would the replacement likely have the same problem?

Thanks for your help. :)
[Miscellaneous Android Development] drmad:
No

---------- Post added at 10:12 PM ---------- Previous post was at 10:09 PM ----------

Then u can unlock our bootloader??? :D:D:D:good::good:
[Miscellaneous Android Development] Hamza91:
That would be awsome :D
[Miscellaneous Android Development] superdragonpt:
i have the kernel source code for my device (asus provided) still it was for JB 4.1.x, i already modified it to boot on 4.2.x (already released an beta custom kernel for my device)

By merging other sources, i got uboot configs and other usefull things for this SoC, i may be sucefull in compiling an new bootloader (since the MEDIATEK BUILD is the same) its just an question of testing new configs.

Since some of the source is proprietary (dont you love Mediatek) i cant upload to my git ...

I had the same problem with my mt6577 custom kernel (already updated the upstream from 3.4.0 -> 3.4.5) with other usefull updates, i had to remove some stuff from my git... or else my git could be takedown by NDA/NRA ...

Lets see :)

Regards
[Miscellaneous Android Development] drmad:
You can compile the bootloader? I can test it but you educate me on how to flash it and how to get it back. We have done experiments in flashing, in Meta mode:

1. Spflash does not work

2. we have working connection adb

Thanks!
[Miscellaneous Android Development] superdragonpt:
Hi

I may be sucefull in compiling an new bootloader yes...

Spflashtools is useless if your using an locked bootloader, it will throw errors like "download user fail bla bla bla" or "nvram checksum bla bla bla"

Spflashtools, can however flash secro.img (bootloader), the problem is that it may brick your device by flashing testing bootloaders ...

No pain = no gain :good:

In my case i can flash between the stock (locked) bootloader , and the new unlocked bootloaders, it never bricked my device by doing that.

There's also an slightly chance that my unlocked bootloader would work (as it is) in your device, since the Mediatek Rom build is the same.

ro.mediatek.version.release

It should be just an matter of config the scatter file.

The only thing that i know that can perma brick an device via spflashtools is flashing an whrong preloader

(NEVER EVER, FLASH AN WHRONG PRELOADER)

But we wont touch on that, just on secro images ...

Regards
[Miscellaneous Android Development] drmad:
and then how do we proceed?
[Miscellaneous Android Development] fREAST:
I cant seem to find where to get my secro...

Maybe its not possible with my device?

Here is how droidtools look like:
[Miscellaneous Android Development] drmad:
For the secro.img u must perform a full backup of your device

The "ro.mediatek.version.release" is in build.prop
[Miscellaneous Android Development] Hamza91:
Also you must be rooted to perform full backup
[Miscellaneous Android Development] Hamza91:
Will it be a soft brick or hard brick (if unsuccesful) I mean we can get the tab back by flashing the default secro.img??
[Miscellaneous Android Development] drmad:
if someone wants to participate in a modding tab b1-710 group send me a pm :)
[Miscellaneous Android Development] Stejer:
How to root Iconia B1-720 running 4.2.2?

And another question is when to expect update to 4.4.2 KitKat? :)
[Miscellaneous Android Development] :
Have you tried Framaroot? - http://xdaforums.com/apps/framaroot/root-framaroot-one-click-apk-to-root-t2130276

As for KitKat, nobody knows except for Acer.
[Miscellaneous Android Development] entonjackson:
Give me content of /proc/dumchar_info and /system/build.prop and i will update my toolkit to support this device.
[Miscellaneous Android Development] Stejer:
I hope we'll get KitKat asap but in the meantime it will be great if I at least get root for 4.2.2. :) I think that this tool does not support my device and I'm not sure should I experiment with it.

I just sent you a message with infos, I hope you could figure it out. That would be great! :fingers-crossed:
[Miscellaneous Android Development] DustArma:
Iconia B1-A71

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

Secro.img file attached.
[Miscellaneous Android Development] drmad:
Hope for unlocked bootloader :)

Hey superdragonpt, have you abandoned us? :)

I searched your thred the secro.img unlocked for asus but what I found is much smaller than what I from mtkdroid and I do not know if his is normal, then we want to know if by flashing a wrong secro risk hard bricking or just a soft bricking from which you can go back. Thanks! :)
[Miscellaneous Android Development] jareee:
What i'm doing wrong? ... i copied same version of firmware, follow instruction a have an error message

Please turn on your Acer Iconia A1-810 / A1-811 / B1-711 now and unlock the screen. Only hit ENTER when the screen of your

[ENTER] Continue

[Q] Quit

Enter a selection:

Don't touch the screen! I'm taking it over now ;)

Starting: Intent { act=android.intent.action.MAIN cat=[android.intent.category.LAUNCHER] cmp=com.mediatek.connectivity/.Cds

Successfully started Telnet server on your Acer Iconia A1-810 / A1-811 / B1-711.

/data/local/tmp/busybox telnet 127.0.0.1 1234 | cat /proc/dumchar_info

exit

exit

127.0.0.1 1234 | cat /proc/dumchar_info <

Part_Name Size StartAddr Type MapTo

preloader 0x0000000000c00000 0x0000000000000000 2 /dev/misc-sd

mbr 0x0000000000080000 0x0000000000000000 2 /dev/block/mmcblk0

ebr1 0x0000000000080000 0x0000000000080000 2 /dev/block/mmcblk0p1

pmt 0x0000000000400000 0x0000000000100000 2 /dev/block/mmcblk0

pro_info 0x0000000000300000 0x0000000000500000 2 /dev/block/mmcblk0

nvram 0x0000000000500000 0x0000000000800000 2 /dev/block/mmcblk0

protect_f 0x0000000000a00000 0x0000000000d00000 2 /dev/block/mmcblk0p2

protect_s 0x0000000000a00000 0x0000000001700000 2 /dev/block/mmcblk0p3

seccfg 0x0000000000020000 0x0000000002100000 2 /dev/block/mmcblk0

uboot 0x0000000000060000 0x0000000002120000 2 /dev/block/mmcblk0

bootimg 0x0000000000600000 0x0000000002180000 2 /dev/block/mmcblk0

recovery 0x0000000000a00000 0x0000000002780000 2 /dev/block/mmcblk0

sec_ro 0x0000000000600000 0x0000000003180000 2 /dev/block/mmcblk0p4

misc 0x0000000000080000 0x0000000003780000 2 /dev/block/mmcblk0

logo 0x0000000000300000 0x0000000003800000 2 /dev/block/mmcblk0

expdb 0x0000000000a00000 0x0000000003b00000 2 /dev/block/mmcblk0

android 0x0000000040000000 0x0000000004500000 2 /dev/block/mmcblk0p5

Checking firmware version.

1762 KB/s (3612 bytes in 0.002s)

Successfully pulled build.prop.

Firmware version 'RV27RC03' installed. MAKE SURE YOUR system.img.gz IN system_image FOLDER IS OF THE SAME VERSION, OTHERWIS

Copying rooted system.img.gz to your Acer Iconia A1-810 / A1-811 / B1-711 (This will take 1-2 minutes)...

[ENTER] Continue

[Q] Quit

Enter a selection:

system.img.gz found in folder 'system_image'.

/data/local/tmp/busybox telnet 127.0.0.1 1234

chmod 777 /cache

chmod 777 /cache/system.img.gz

shell@android:/ $ /data/local/tmp/busybox telnet 127.0.0.1 1234

telnet: can't connect to remote host (127.0.0.1): Connection refused

1|shell@android:/ $ chmod 777 /cache

Unable to chmod /cache: Operation not permitted

10|shell@android:/ $ chmod 777 /cache/system.img.gz

Unable to chmod /cache/system.img.gz: Permission denied

10|shell@android:/ $ exit

failed to copy 'system_image\system.img.gz' to '/cache/system.img.gz': Permission denied

opendir failed, Permission denied

Failed to copy system.img.gz. Make sure the folder 'system_image' of this toolkit contains a system.img.gz suiting to your
[Miscellaneous Android Development] entonjackson:
telnet server is probably not running.

try it again or try starting telnet server manually.
[Miscellaneous Android Development] fnldstntn:
Reset your tablet and try again....i solved this problem with this way...
[Miscellaneous Android Development] thegrosboss:
Bonjour

est-il possible de rooter la tablette (iconia B1 A71) sans la reflasher ? (sans tout réinitialiser)
[Miscellaneous Android Development] abstrkt1337:
It's an english forum. So speak english.

But

Oui tu peux la rooter via linux sans rien perdre même sous Windows lis le post en 1ere page

Sony Xperia Tipo

ROM: CyanogenMod 11

Sony Xperia E ( soon )
[Miscellaneous Android Development] thegrosboss:
ok, merci ... euh, thanks ! :angel:
[Miscellaneous Android Development] thegrosboss:
But how do you root without flashing the tablet ?
[Miscellaneous Android Development] twu2:
Acer release following OS image (full ROM, could be used to install from SD card) in their site:

AV052.RV27RC02.PA.CA

AV052.RV27RC04.TWN.GEN1

AV052.RV18RC09.EMEA.FR

AV052.RV27RC07.GC.GEN1

AV052.RV26RC06.PA.CUS1

AV052.RV27RC03.WW.GEN1

AV052.RV27RC01.TWN.UPC
[Miscellaneous Android Development] jareee:
could you please post a download link for images? thx :good:
[Miscellaneous Android Development] fREAST:
These are the links from Acer (for A1-810).

OS_Acer_AV052.RV27RC02.PA.CA_A42J_A

OS_Acer_AV052.RV27RC04.TWN.GEN1_A42J_A

OS_Acer_AV052.RV18RC09.EMEA.FR_A42J_A

OS_Acer_AV052.RV27RC07.GC.GEN1_A42J_A

OS_Acer_AV052.RV26RC06.PA.CUS1_A42J_A

OS_Acer_AV052.RV27RC03.WW.GEN1_A42J_A

OS_Acer_AV052.RV27RC01.TWN.UPC_A42J_A

And follow the guide here
[Miscellaneous Android Development] superdragonpt:
Thanks for this ...

Just got back from Easter Vacations...

Will get you informed, as soon as i get more progress.

Regards
[Miscellaneous Android Development] DustArma:
Aren't the secro.img files ridiculously padded out anyway, I opened mine on a hex editor and it was mostly zeros, even compressing it drops it from 6mb to 17KBs
[Miscellaneous Android Development] fREAST:
A1-810

Here is my secro.img

ro.mediatek.version.release=ALPS.JB2.MP.V1.3
[Miscellaneous Android Development] groovepeppy:
bump?

:(
[Miscellaneous Android Development] wilson pickett:
thanks

i don't spend much time here anymore,but i wanted to thank

the op,and,all here for the root on my newly purchased $99

refurb acer a-1-810.

i went to the trouble of installing ubuntu,to use flash from

scratch method,worked like a charm,and i had forgotten some of the joys of linux

which i haven't messed with for at least a year.

thank you,over
[Miscellaneous Android Development] Just_Another_N00b:
No need to install Ubuntu. Live CD works just as fine...

---------- Post added at 01:34 PM ---------- Previous post was at 01:33 PM ----------

Use Linux in any flavour (32bit Ubuntu Live CD worked fine for me - no install required) and root from scratch. That is the safest method and will not result in bootloop...
[Miscellaneous Android Development] wilson pickett:
yes,i know.i wanted to install it.
[Miscellaneous Android Development] Bruno_rv:
I got a DEAD A1-810 today. A friend flashed it with RV27RC03_WW_GEN1 without looking which firmware he has. Now the tab is dead,if i connect it to USB,i just got it connected-diconnected like a loop.Nothing on screen. Any chance to recover this tab? Thanks.
[Miscellaneous Android Development] fREAST:
Can you get to the recovery? Power on + vol up.

Does he have any idea what version it is? Where did he buy the tab?

If you can get into recovery, download this AV052.RV27RC03.WW.GEN1 and try to flash it with "apply update from external storage"
[Miscellaneous Android Development] Just_Another_N00b:
RMA or doorstopper?

That's the version that got him into trouble, so that one is not the firmware version required. I am not sure how you would be able to see which firmware version was present when the device is bricked. Maybe an RMA is the only way to go, if there is still some time left in the warranty...

If you can get into recovery-mode there may be some info attainable as to which version was there, but chances are low.

Otherwise it would be a nice, although somewhat thin, doorstopper... Sorry to be the bearer of such bad news, but that is sometimes unavoidable.
[Miscellaneous Android Development] drmad:
I'm making a utility to backup / restore to be used in meta mode, a kind of recovery to be used by the PC.

discussion http://xdaforums.com/showthread.php?t=2730966
[Miscellaneous Android Development] trip2fun:
Thanks!!!

Hello,

Thanks for share this files...

Can you move the files for another server? Dropbox just block the links.

Thanks again.
[Miscellaneous Android Development] trip2fun:
Hello,

give me an error

.img of=/dev/block/mmcblk0p3 <

/dev/block/mmcblk0p3: cannot open for write: Permission denied

Can you tell me why??

Thanks
[Miscellaneous Android Development] drmad:
Are you root? HAve adb shell su privileges? Show the shell window please
[Miscellaneous Android Development] abstrkt1337:
[MENTION=1679926]drmad[/MENTION] i sent you a pm
[Miscellaneous Android Development] trip2fun:
I do not know if I have root, I'm in boot loop, but I guess not

and I think I'm not running abd shell in administrator mode or SU

95.93.15.208/image/adb_shell.jpg

---------- Post added at 12:08 PM ---------- Previous post was at 11:52 AM ----------

Already got it, was not in SU

But now gives another error ... the device has no space

95.93.15.208/image/adb_shell_2.jpg

:(
[Miscellaneous Android Development] drmad:
try with

adb shell

su
[Miscellaneous Android Development] trip2fun:
Already got it, was not in SU

But now gives another error ... the device has no space

95.93.15.208/image/adb_shell_2.jpg
[Miscellaneous Android Development] drmad:
that device is? What are you by flashing?
[Miscellaneous Android Development] trip2fun:
My divice is Acer Iconia B1-710, that is, logo loop after trying to root

and I'm trying to flash this system image decompressed on my SD

uptobox.com/g1o00bwlf9mu
[Miscellaneous Android Development] Hamza91:
It gave me this error too. But the tab got alive regardless of that
[Miscellaneous Android Development] trip2fun:
What image do you use you??
[Miscellaneous Android Development] drmad:
The image is a your backup?
[Miscellaneous Android Development] trip2fun:
Lol...

I dont have backup :crying:

---------- Post added at 01:45 PM ---------- Previous post was at 01:38 PM ----------

can you put this file B1-710_RV04RC01_Stock.zip in another server for i test? please... :(
[Miscellaneous Android Development] Evilweasel47:
Hello all, I tried the windows root method, and followed all steps perfectly. The tablet is now stuck in the acer splash screen. What did I do wrong? Please help! Thanks! (it is a a1-810).
[Miscellaneous Android Development] trip2fun:
test this

Put this file update.zip in SD card. download at : uptobox.com/a6nb7a5k7umm

Restar tablet with Vol Up + Power

Then Vol down Apply update from external storage

them run the update.zip and wait

---------- Post added at 02:46 PM ---------- Previous post was at 02:28 PM ----------

Now is that I think this ****ed all ...

Unable flashing not decompressing the image but used the image RV04RC01_PA_CA and now does not recognize by META MODE
[Miscellaneous Android Development] Evilweasel47:
Is this the right file for A1-810? I have the firmware RV26RC06_PA_CUS1. Thanks!
[Miscellaneous Android Development] Hamza91:
At first I used drmad's image but it was having some prblems so I flashed my own (unrooted) image
[Miscellaneous Android Development] abstrkt1337:
The image of drmad is for B1-710 only

---------- Post added at 04:40 PM ---------- Previous post was at 04:38 PM ----------

The drmad backup doesn't work on A1-810 because it's for B1-710 --'. Now his A1-810 is Hardbricked
[Miscellaneous Android Development] Evilweasel47:
I didn't do what he suggested yet. Is there any other way I can fix it?

So the only way to fix it is to send it to Acer?
[Miscellaneous Android Development] abstrkt1337:
Yes
[Miscellaneous Android Development] abstrkt1337:
Use the drmad guide for restoring.

Sent from my Xperia Tipo Or my Xperia E
[Miscellaneous Android Development] drmad:
U must see on Windows device manager if tablet is recognized
[Miscellaneous Android Development] abstrkt1337:
It's seem you have an Hardbrick

Sent from my Xperia Tipo Or my Xperia E
[Miscellaneous Android Development] drmad:
Is not simple but work, U must try and try, unistall and reinstall the drivers following guides
[Miscellaneous Android Development] Just_Another_N00b:
What you could do is to download the correct full recovery zip for SD card from ACER themselves. They have now supplied us, in their download section, the full set of recovery-images. Select the correct one, put it on an SD card and put into your bricked tablet. Instructions are also present at ACER's download site in the documentation section how to perform a recovery (read: update).

Disadvantage is that all your stuff is gone, as it is back to factory status, but the advantage is that the device is unbricked. Your choice!
[Miscellaneous Android Development] entonjackson:
New version v0.8.2 is out, supporting B1-720
[Miscellaneous Android Development] Hamza91:
Powe?

Can you turn up the tab I mean can you see the acer logo? If you CAN then you dont of a hard brick you only have a soft brick.

Also can you post an ss of your maui tool?
[Miscellaneous Android Development] Hamza91:
Which usb port selected??
[Miscellaneous Android Development] Stejer:
Thank you very much, but... :D

I went thru the whole process twice and couldn't install binaries after successfully rooting my B1-720 device, I tried first time with SuperSU and the second time with Superuser. Same problem. I also installed right drivers from the link given in the toolkit (goo.gl/...) and got "Successfully rooted device" message both times after finishing the whole process. Do you have something on your mind to help me out? :)
[Miscellaneous Android Development] entonjackson:
A full log of the output would help me further.
[Miscellaneous Android Development] rosekiller:
omg- i was buy old acer a1-811 , it had update to RV08RC07. what can i do to use this tool for root? degrade or what ?
[Miscellaneous Android Development] entonjackson:
If root from scratch doesn't work, then there is probably no chance.