yashsingh1/xdaforums huggingface dataset:
[Acer Iconia Tab A100] darkedyb:
Hi, first sorry for my bad english

My Acer Iconia A100 is Brick just only show the acer logo, i try hard reset, downgrade to HC, copy de update.zip in various sd card but no work, when try enter in recovery the tablet show the droid dead with this message:

E:can't open /dev/block/mmcblk0p5(No such file or directory)

E:failed to mount /cache (No such file or directory)

E:can't mount /cache/recovery/command

E:failed to mount /cache (No such file or directory)

E:can't mount /cache/recovery/logs

E:can't open /cache/recovery/logs

E:failed to mount /cache (No such file or directory)

E:can't mount /cache/recovery/last_log

E:can't open /cache/recovery/last_log

E:failed to mount /cache (No such file or directory)

E:can't mount /cache/recovery/last_install

E:can't open /cache/recovery/last_install

E:can't open /dev/block/mmcblk0p5(No such file or directory)

E:failed to mount /cache (No such file or directory)

In the recovery can navigate up/down but can't select any option

My Bootloader is locked, when enter In the Fastboot Mode show:

Bootloader v0.03.13-ICS: Starting Fastboot USB bownload protocol

I try Unlock the bootloader with the command:

fastboot oem unlock

The tablet just blink, but no unlock the bootloader

The ROM is ICS Stock official updated via OTA was working a month.

All the tablet is "stock" just is rooted

I try some ADB commands but no work, just response in fastboot mode

Before the brick, i was read my e-mail and then freeze, just force turn off, and when turn on never boot just show the acer logo.
[Acer Iconia Tab A100] pio_masaki:
Sounds like the typical brick, sorry to say it'll need to be sent to Acer for repair/replacement.

Tapatalked from my Galaxy S II.
[Acer Iconia Tab A100] darkedyb:
Is there any other way to unlock the bootloader in fastboot or some way to fix it without sending it to acer's technical service, my problem being that there is no authorized service technician in my country.
[Acer Iconia Tab A100] pio_masaki:
No, if there was we would all be fixing it ourselves.

Tapatalked from my Galaxy S II.
[Acer Iconia Tab A100] max69power:
if you know how to replace the main board that is the way they fixed mine

with the amount this is increasing in frequency it sounds like there should be a recall.
[Acer Iconia Tab A100] TechStar!:
The easiest way to fix a brick is to send it to Acer. They don't give a F*#K. They'll gladly replace it and send you back your tab fixed. Just don't tell them you bricked it. Tell them it fell or bad OTA update. NOW WHEN YOU GET IT BACK INSTALL CWM RECOVERY OR TWRP AND THERE WILL BE NO MORE ISSUES!

Good luck and have fun!
[Acer Iconia Tab A100] akokokoy:
I had the same issue with pio_masaki. The dreaded APX mode. Your only glimmer of hope is the little power button light but that's it, for now NO SOLUTION. I have a CPUID (Not Even Sure if it is right), but SBK on NVFlash (RCM 0x4) did not work.

What happened to me, Upgraded to Picazzo, froze on Resetting Data Partition. Stuck on Acer Screen. Working Recovery, Working Fastboot. Then Flashed Aroma, Was able to installa ROM but no space. Like my data partition was corrupted to only 65MB (it was useless, can't install any app). Couple of More Reset (Superwipe, Hard Reset, Flash) Then froze again. Now stuck in APX mode. I just can't believe that ACER said that it was the mainboard and I need to pay a freakin' 355 dollars since mine was a gift from US. ( I am from the Philippines by the way). Seriously. I can buy like 2 Tabs for that price. Until there is no fix for My A200 on APX, It will be a very big paper weight.
[Acer Iconia Tab A100] pio_masaki:
But it is the motherboard, the emmc decided to murder your partition table.

Tapatalked from my Galaxy S II.
[Acer Iconia Tab A100] akokokoy:
Does this mean that even though there would be SBK for A200 there is really no recovery for it? That's....... just....... sad....
[Acer Iconia Tab A100] pio_masaki:
If you have the sbk then yes you can repair it by rebuilding the gpt, afaik only the a500 has a working sbk.

Tapatalked from my Galaxy S II.
[Acer Iconia Tab A100] akokokoy:
Im Just clinging to this "0a5c01c243213397" which i am beginning to doubt if it is really my CPUID. USBDeview gave me this number when I used to connect my A200 on ADB mode. The other number didnt make sense (like the 0123456789ABCDED) There was this one person on XDA that said SBK for A200 was also "released" (mearoth i think said he "heard"). Will wait for that and see if they can create a formula to create SBK from CPUID, just like what they did for A500.
[Acer Iconia Tab A100] hugmax:
Is this one bricked?

My table just died out of the blue.

is this one bricked?

no device listed using adb

it was stock ICS.

should I call acer and have it replace?
[Acer Iconia Tab A100] pio_masaki:
Looks like sorry to say.

Tapatalked from my Galaxy S II.
[Acer Iconia Tab A100] pahioman:
bricked A100

Please post in with the following information if available:

Date of purchase (it can be a rough guess if you don't know) Bought this on May23rd from Redtag.com, supposedly refurbished with 90 day warranty. I have one week left on the warranty and have a claim filed with Redtag. They said they are contacting the vendor and allow 48 hours for a response. So I'm curious to find out who this "vendor" is. And hoping they will honor the 90 day warranty.ROM it was running, was it stock acer OTA update ICS, modded stock, CM9 etc; It was running stock OTA ICS

Did you flash and unlock the bootloader, if so, where did you get it? Never flashed or unlocked bootloader

Did you flash and use a custom recovery, if so, where did you get it? CWM, or TWRP?NO

Did you have any freezes, random reboots, odd behaviour before the brick?Very sluggish, not responding to screen tapping

Did you hard reboot (use the reset button, or hold the power button)?Pushed in the reset button on side, and also did the power button/vol up reboot, came up with red triangle on the green android

Did you run a custom kernel (ezterry or any others) or stock kernel?No

Did you overclock, if so what was max, and did you undervolt, if so, how low?No

What have you done since the brick, any wipes, roms you've attempted to use as update.zip, any flashes attempted.Nothing, browsing this board to see if I can restore stock ICS
[Acer Iconia Tab A100] pio_masaki:
It doesn't sound like its bricked, just slow and unresponsive? Or did I miss where it doesn't boot?

Tapatalked from my Galaxy S II.
[Acer Iconia Tab A100] pahioman:
Doesn't boot, bricked per the definition at begining of thread:stuck at "ACER" logo. THANKS Pio
[Acer Iconia Tab A100] pio_masaki:
Not sure how to take this post.

Tapatalked from my Galaxy S II.
[Acer Iconia Tab A100] pahioman:
gone rchilsd

You referring to the "Junior" reference? It was a typo, I saw it in my title thinking it was the name of the responder. No disrepect intended, noticed the typo, and was trying to re-edit, when you replied.
[Acer Iconia Tab A100] pio_masaki:
Update: just got an email from Acer, the a100 is repaired and being shipped out. They didn't charge me anything. No idea when they'll send it out, just know its going to be on its way eventually.

I assume its my unit being sent they said repaired not replaced, which I was hoping to get mine back, no screen issues and I really did not want to send another one back lol. Plus it went through a lot with me, I'll feel better having mine back.

Tapatalked from my Galaxy S II.
[Acer Iconia Tab A100] pio_masaki:
Another update: the a100 arrived today. Its my old one, same snid on the slot cover, paperwork states motherboard replacement. They didn't send my box though, so now I no longer have the box it came in. Not a big deal, but I like having them around for when I sell it.

Came back on HC, so I cant test the possible new boot loader. Not sure why its on HC but oh well. She's back home where she belongs. Who wants some new jellytime?

In the end it took 10 days back to my doorstep and they didn't charge me a penny for it.

Tapatalked from my Galaxy S II.
[Acer Iconia Tab A100] nim.whit:
Edit: deleted
[Acer Iconia Tab A100] jeremiahburt23:
Possible Brick?

Hi everyone! I was running the latest WDS jellybean build from 8/21 and was having a grand time. There were a few issues with the HDMI out (periodic video and no audio) and decided to go back to stock rom. I installed one of the official ICS roms I found (4.0.3) for the A100 and apparently did something wrong during the install (perhaps I should have done a full system wipe?). Anyways, the new rom won't load (it's stuck on the "Android" logo) and I cannot get into TWRP. When I try to get to it I now get the android icon...the one with the android on his back with is front door open. Not sure where TWRP went. So...I am stuck. I cannot get into TWRP to recover my system, and I cannot load the Rom. Is there an app out there to fix this, or am I screwed?
[Acer Iconia Tab A100] pio_masaki:
hard reset and pray.

Power off the tablet.

Hold volume up, furthest from lock switch.

Holding volume up hold power for 3 seconds.

Once the screen turns on toggle the lock switch back and forth while still holding volume up.

Should initiate a factory reset.

If this fails try an update.zip on root of external SD and power on holding volume down.

Tapatalked from my Galaxy S II.
[Acer Iconia Tab A100] jeremiahburt23:
Worked!

Worked! Thanks very much!:victory:
[Acer Iconia Tab A100] pio_masaki:
Glad it worked but give this a read:

http://xdaforums.com/showthread.php?p=30524194

You almost bricked, you got very lucky.

Tapatalked from my Galaxy S II.
[Acer Iconia Tab A100] jeremiahburt23:
Yes sir

(wiping sweat from my brow)

Thanks for the warning. Let this be a lesson to me. :o

---------- Post added at 04:48 AM ---------- Previous post was at 04:39 AM ----------

One last question:

Now that I have the stock Rom back up and running again, can I re-install TWRP once more to backup the stock and then go back to my jellybean backup? Or, will I need to unlock the bootloader again and re-root, and then re-install TWRP? Sorry for the dumb questions; I am trying to learn as I go along here! :p
[Acer Iconia Tab A100] pio_masaki:
Not sure as I don't know what your tab has on it now. Assume start over from step 1. Root, bootloader, twrp, backup, play.

Tapatalked from my Galaxy S II.
[Acer Iconia Tab A100] linuxsociety:
I'm going to add that once you get TWRP installed back don't flash OTA .zip files from there (that means don't flash your stock update.zip from custom recovery)! If you want to use TWRP with a STOCK rom you need to either backup your stock system/data with TWRP and restore that later, or get a custom stock based rom from here. When you install a regular Acer update.zip from TWRP it is going to fail, but at the same time it is going to also lock back the boot loader. If you reboot out of TWRP without flashing a backup at this point, your system will not boot and will not have a recovery system! Also don't go messing with trying to 'lock' the bootloader after you get it unlocked -unless you have a really good reason to, and if you do you need to ask about it first and make sure that you follow the exact steps needed to do so. Like pio said the things you are doing usually will result in a brick. Sounds like you flashed the OTA ICS or HC from TWRP which caused the bootloader to get locked, if the hard reset wouldn't have worked then you most likely would have been completely locked out of your device. Pio_masaki has wrote some really good information on all of this and I suggest you take a look, and see how close you really came to owning an expensive paper weight!
[Acer Iconia Tab A100] ilyuha1108:
Hey, pio. What was your problem with tablet? Why has it been bricked?

And, if i can't flash the stocks ics to lock bootloader what i should do? May be somebody will write an instruction how to lock one's bootloader?

Frankly speaking my tablet was in service center as well. The trouble was with /cache. This catalog was broken and couldn't be repaired. The same troubles had at least 10 members on russian speaking forum, but every person was running everything stock. ZeroNull, a well-known person, told me that trouble is connected with our flash memory in motherboard, the same troubles have A510/A700 users, but their problem is /data and can be faced only using a custom recovery. So here is a question can i face the flash memory trouble again? I know that facing this trouble on unlocked bootlader will cost me a lot of money, especially in Russia. May be 250$ minimum.
[Acer Iconia Tab A100] linuxsociety:
May I ask why you need your bootloader locked? BTW pio's failure was a random failure with emmc (related to how the chip is designed to handle wear leveling), it wasn't anything that he done to cause it. His partition table lost information needed to be able to see all his partitions, so he was stuck with no way to do anything, and no way to repair the partitions/GPT.

I'm just wondering why your needing to lock the bootloader. *Edit: just seen where you edited your last post, are you just wanting to lock your bootloader because you are in fear that it is going to cause an emmc failure such as what pio_masaki had?
[Acer Iconia Tab A100] ilyuha1108:
Actually, i don't need, but some users on russian speaking forum do want it, so it'll be good to tell them a good instruction. BTW, was this emmc failure the trouble you solved in new recovery?
[Acer Iconia Tab A100] linuxsociety:
Ok, if you are just wanting to know how for the sake of knowing, thats one thing, but just wanting to do it for the sake of doing, thats another :D I don't recommend you messing with it unless you want to get a brick. The more you worry about things like that and start messing with it, the more likely it is to happen to you and cost you that $250 you don't want to spend.

About the new recovery, the kernel and twrp are both build with mmc_cap_erase functions disabled to prevent them from being triggered from userland or the kernel, however with nobody knowing exactly the REAL cause of the random emmc failure on the A100 there is no SURE way of saying yet. The idea was simply to implement it just-in-case the kernel or the recovery was at blame.. If the fault is at the hardware level, there isn't that much we can do from our end to cure the problem completely. With everything being so random, and no way to get logs of exactly WHAT happened, we have no way to put our finger on the exact cause. There are tons of theorys you will find, however the emmc brick protection included in the kernel and in twrp IS NOT proven to prevent it with our device, it is simply there as an added precaution just in case it is coming from the kernel / recovery.
[Acer Iconia Tab A100] ilyuha1108:
After a pio's JB build i can't use any ICS rom, especially official.:laugh: So it is asked for the sake of knowing. I hope after service center i have a motherboard with a good flash memory. Thanks you for full and simple answers.
[Acer Iconia Tab A100] linuxsociety:
Why can you not use any ICS rom or official rom after his JB build? are you meaning that you like JB so good you don't have no reason to use ICS ? Or are you meaning that after you flash JB that you are unable to install ICS back ?
[Acer Iconia Tab A100] icomar:
Yesterday I sent my bricked a100 back to acer. It has got cwm recovery and cm9 installed in it. Previously i completely discharged the battery hoping they cant power on the tablet and see all the custom stuff. I will update you when acer sends the tablet back. See Ya!
[Acer Iconia Tab A100] ygthb:
I bricked mine, with CWM still available and the acer logo unlocked bootloader.

Sent it in

They just sent it back fixed total out time 3 days

No questions at all
[Acer Iconia Tab A100] mmcqueary70:
They didnt say anything about my unlocked bootloader shipping mine back to me fixed no questions asked.
[Acer Iconia Tab A100] IamModeste:
Copy of http://xdaforums.com/showthread.php?t=1953751

E: Can't mount /sdcard/

E: Can't mount /cache/recovery/command

E: Can't mount /cache/recovery/log

E: Can't open /cache/recovery/log

E: Can't mount /cache/recovery/last_log

E: Can't open /cache/recovery/last_log

I'm paniccking a bit here...

i WAS ON ICS ROM RELIX/FLEXREAPER , unlocked rooted, TAB FROZE AFTER A REBOOT FOLLOWING DROIDMOTE APP UNINSTALLATION...

Now CWM is unusable as all options lead to unmountable blablabla...

and I can't pass the acer 4 logos ...

I did my homework... the following link for a different device says

http://www.slatedroid.com/topic/3482.../page__st__460

Have to flash a stock ROM then install cwm and then proceed with rom installation

but my cwm can't access any zip file so i'm kind of stuck here...

If I have to use update.zip, can you point me the the good one ?

if i have to fix my internal sd partitions... can you provide me with instructions for win7 64 please.

if it's really needed i'll setup a ubuntu machine if it cvan help to fix.

I had a nandroid backup on my external sd.

The sd crossix mod was active and build.prop modded to look as a A500 in the market.

HELP ME PLEASE !!! TAB'S WARRANTY ISNT GOOD ANYMORE.

update: TRIED FACTORY RESET.:

--wiping data...

Formatting / data......

Formatting / Cache....

Formatting / sd-ext....

E:format_Volume: make_extf4fs failed on on dev/block/mmcblk0p4 !

Formatting /sdcard/.android_secure....

ERROR MOUNTING sdcard/.android_secure !

Data wipe Complete.

There must be a way... i'll rip it open and DD the damn sd if I have to. I don,t have the $ to repair it.

Can you help ?
[Acer Iconia Tab A100] pio_masaki:
If you had read this thread you'd have your answer. The emmc is gone, no gpt is left. Only repair is motherboard replacement by Acer or yourself. Sorry to say it but Acer uses known faulty parts in the a100 and just replaces motherboards under warranty.
[Acer Iconia Tab A100] IamModeste:
I'm happy to say that I just discovered my tablet was still under warranty in Acer system, So happy. But I can't believe how badly manufactured this tablet is if this happen so often... Is there a way to test the quality of the Internal sd card???
[Acer Iconia Tab A100] pio_masaki:
No need, every single unit will eventually have this failure. Its not the internal SD per say, its the emmc itself getting wiped incorrectly and wiping the gpt so partitions can't mount, the map pointing to them us destroyed.
[Acer Iconia Tab A100] oveja9000:
HELP!!! i have the same problem, I﻿ tryed everything!!! WHAT CAN I DO!!!??? from Argentine.here there are many cases
[Acer Iconia Tab A100] justjackyl:
Wow. Just...wow.

Read the post you quoted.

Sent via G2x on temasek b135.2 w/faux kernel v54
[Acer Iconia Tab A100] das_webos_transformer:
/\/\/\/\/\/\/\/\

Lol
[Acer Iconia Tab A100] IamModeste:
I understand, I just wondered if there is no way of detecting it will happen before the destruction, a end of life detector...

Or maybe a software mecanism equivalent of S.M.A.R.T. for computer hard disk drives ?

I mean if I could detect the problem is about to happen maybe I could have backup a bit more of my data before sending it for repair.
[Acer Iconia Tab A100] pio_masaki:
No, the system triggers it on its own with no input from us, in the background, only warning you get is a freeze. Read up on the emmc brick bug and you'll understand why its impossible to predict, its not the emmc itself failing but the emmc nuking its gpt at seemingly random times. Best we came up with is something of a wear leveling for the emmc, usually trigger due to /cache triggers the bricking. The godmachine kernel has a patch to potentially prevent it from occurring again. It may or may not help but its all we have until Acer fesses up or finds a solution, which they don't care, the a100 is old and most out of warranty anyways. If not they replace the board and next time it bricks its out for sure.
[Acer Iconia Tab A100] IamModeste:
From what I read there; hhttp://xdaforums.com/showthread.php?t=1693704

There is an app designed by CHAINFIRE for samsung that could tell if the chip is brick prone before

Got Brickbug ? v1.2.apk ... Anyone is willing to test ? I can't myself as my device is bricked, from the description

the app is safe just test and doesn,t write.

If i'm able to prove it's a case of planned obsolescence and/or knowingly use of faulty hardware parts i may obtain a complete refund under local laws.

I wonder if the A110 will have the same ****ty emmc ?
[Acer Iconia Tab A100] pio_masaki:
The app works however we use a different revision so it won't say if we do or not. But you do. We've yet to see a revision other then ones that brick in the a100.
[Acer Iconia Tab A100] illego:
Add another one to the bad emmc bricked list. Sending it in for repairs.
[Acer Iconia Tab A100] pio_masaki:
What was your setup? ROM/kernel etc?

Tapatalked from my Nexus 7 - Kuroikaze AOSP
[Acer Iconia Tab A100] illego:
I was running Flexreaper with gm2.0 kernel at the time. Was about to hand it over to my son and pick up the Nexus 7. Luckily I still had two weeks left on the warranty.
[Acer Iconia Tab A100] Romman0:
What recovery, and version?
[Acer Iconia Tab A100] illego:
TWRP2.2.2.1
[Acer Iconia Tab A100] pio_masaki:
Sadly it seems the only safe way is to stay on HC then. If you plan to give it to your son still and it comes back on HC, maybe consider leaving it there.

Tapatalked from my Nexus 7 - Kuroikaze AOSP
[Acer Iconia Tab A100] illego:
I might but chances are its going to be ics stock. Of course it's only going to be a video player in the car for the kids and angry birds so hc might be enough.
[Acer Iconia Tab A100] pio_masaki:
Well I only said hc as there isn't any reports of bricks until ICS, and its kernel sources.

Tapatalked from my Galaxy Nexus - CN(A)
[TouchPad Q&A, Help & Troubleshooting] vitaminwater:
Sort of like the topic states. Share your media player preference. It seems no matter which one I choose I lose functionality of something else. Right now I have zero video playback outside of YouTube or Netflix.
[TouchPad Q&A, Help & Troubleshooting] TedSamaha:
Try MX Player its simply epic! :)
[TouchPad Q&A, Help & Troubleshooting] vitaminwater:
I have tried that. It said "sorry, this video cannot be played"
[TouchPad Q&A, Help & Troubleshooting] nikos5800:
Dice player (perfection)

Bsplayer (very nice)
[TouchPad Q&A, Help & Troubleshooting] chicle_11:
MX player works great for me. You might have to go to settings and set the decoding for either hardware or software. Also make sure you have the mx player codec (ARMv7). You can get it at google play, free.

Meridian is another nice media player, also free in google play.
[TouchPad Q&A, Help & Troubleshooting] BuffMcBigHuge:
If all else fails, try the AVIA player.