yashsingh1/xdaforums huggingface dataset:
[Acer Iconia Tab A100] painter_:
I tried not cracking the bootloader but loading a second init. This proved beyond my skills. I am more a infrastructure and SQL guy then developer.

I would love to have this thing cracked open but I must say with a few tweeks this is a fast stable tablet. I do not know what I would want changed other then the native bluetooth PAN menu.
[Acer Iconia Tab A100] enyce9:
I just received my a100 from best buy, order placed on black friday.

I would love to see the bootloader cracked.

Keep up the good work guys.
[Acer Iconia Tab A100] oneovakindoldys2:
I for one would love to see some development on the a100! If there is anything I can do to help just let me know. Im not a dev but I have been tinkering since ms-dos in 1982, and I am very eager to see some development on this tablet, especially usb host mode. good luck!!
[Acer Iconia Tab A100] crossix:
That's the route Im going as well, so far I've compiled 2nd-init and it runs, but it crashes right after initalizing the memory and reboots the tablet (I dont think I have the correct memory address of init for the hook to work properly so it reboots the device). I've also tried log's kexec hack and I dont think it works. Asks for a kernel to load, which I dont have but, I dont think our current kernel supports kexec, so a module would have to be compiled for it. Im no kernel developer (I understand how they work, and how to mod an existing one, but building onne from scratch not so much). With kexec, it requires a special kernel the starts up where your current kernel resides in memory, so it would be harder to get working than 2nd-init.
[Acer Iconia Tab A100] burn.phreak:
cracking the encryption

I am not sure what type of file this is but I am fairly experienced with cracking and have access to a small render farm with plenty of gpu power and john the ripper installed. I could give it a go at cracking the password. let me know if I can help.
[Acer Iconia Tab A100] Lightsword1942:
You can't really brute force this kind of thing, we need to use some sort of exploit, would take millions of years or something like that.
[Acer Iconia Tab A100] burn.phreak:
I have brute forced a lot before its worth a shot, I wouldn't say its our best shot but it's worth a look and gives me something to occupy my time.
[Acer Iconia Tab A100] Lightsword1942:
First of all here's an overview of how the encryption works in bootloaders. Also as long as they are not stupid everything will be randomized (no simple passwords or anything that you could crack) which means the encryption itself should be theoretically unbreakable. This means exploits are probably the only thing that will get us anywhere. It might be a good idea to get in contact with the people who worked on the a500 as they might know more about how exactly these bootloaders function.
[Acer Iconia Tab A100] burn.phreak:
well what kind of exploit is even possible on this?
[Acer Iconia Tab A100] Lightsword1942:
Well, that's what we don't really know and have to look for.
[Acer Iconia Tab A100] painter_:
Have you looked at the updates and do they offer any clues?
[Acer Iconia Tab A100] crossix:
Looks like some one else will have to work on a custom recovery, my recovery partition is hosed. For now I'm stuck on 3.2 until I figure it out or get someone else's recovery. If someone is running stock Acer_A100_1.018.05_COM_GEN_2 I might be saved if I can get you to export your recovery partition and post it. I was working on getting a 2nd-init recovery running and had exported a backup copy, but apparently my export is lost :-(
[Acer Iconia Tab A100] cardude280:
I think that may be the same build that I'm on, if you let me know how to export my recovery partition I would gladly post it for you.
[Acer Iconia Tab A100] crossix:
Here's how to do a backup of your recovery (Requires Root!!!):

Open Terminal Emulator and copy / paste the following into it:

su

dd of=/mnt/sdcard/recovery1.img if=/dev/block/mmcblk0p2

dd of=/mnt/sdcard/recovery2.img if=/dev/block/mmcblk0p1

This will create two files in your internal memory (/mnt/sdcard):

recovery1.img

recovery2.img

If someone running Acer_A100_1.018.05_COM_GEN_2 could post these I'd greatly appreciate it!

Just a word of caution, if you've attempted to download and run the Acer Recovery Installer from off the market to install CWM, it'll screw up these two partitions and you won't be able to upgrade to ICS when it comes out or any other ota / recovery that has been posted to this forum. You'll need to restore these two partitions as well, I found this out the hard way, but luckily I made a backup. Unfortunately the microsd card I had the backup on was wiped out by something else.
[Acer Iconia Tab A100] enyce9:
Just got my a100 2 weeks ago. I'll check mine. I would be glad to help if i can.
[Acer Iconia Tab A100] enyce9:
I am running the version u need ill post when i have some time
[Acer Iconia Tab A100] enyce9:
Here you go.

http://db.tt/DT4LA03b
[Acer Iconia Tab A100] dms76:
Can I used this method to backup my A100? How would I recover from them?
[Acer Iconia Tab A100] crossix:
Worked great thanks a ton! Now back to trying to figure out a recovery option for 2nd-init :-)
[Acer Iconia Tab A100] enyce9:
No problem, I wish I could be more help. I would love to see this bootloader cracked.
[Acer Iconia Tab A100] crossix:
This only backs up the boot and recovery partitions, this won't work for backing up /system or /data since those are mounted differently. So in short no, its strictly for development or if you've screwed up your recovery partition so that it doesn't recognize a valid update.zip file.
[Acer Iconia Tab A100] niteh@wk:
I think I screwed the recovery partition by installing and running the acer recovery from the market. Provided that if any luck I have the recovery images from the same tablet version, how do I recover my tablet's recovery from these images?
[Acer Iconia Tab A100] crossix:
First of all you have to be running a *COM_GEN_2 build, the boot and recovery partition images in the zip file that Im posting are specifically for those builds. Once you have determined you're running the correct build, download the attached zip file and extract its contents to /mnt/sdcard. After that, you can run the following commands to restore your recovery & boot partitions from terminal emulator:

su

dd if=/mnt/sdcard/recovery1.img of=/dev/block/mmcblk0p2

dd if=/mnt/sdcard/recovery2.img of=/dev/block/mmcblk0p1

You have to be sure both .img files are in the root of the internal memory (/mnt/sdcard) in order for the above commands to work. Also, if you attempt the above and are not running the same build as it was ment for you're likely to brick your tab. I take no responsibility what so ever if you brick! I'm just the guy who supplies the code, not the executioner ;-)
[Acer Iconia Tab A100] niteh@wk:
You're awesome crossix, and thanks enyce9 for the recovery image files. This is the build on my tab: Acer_A100_1.018.05_COM_GEN_2. The recovery image files enyce9 posted are for this build I assume? Now let me go brick my tab :).. Ok, that won't be funny if it does :S.
[Acer Iconia Tab A100] crossix:
Yup you got the right build, so it should work. You won't know for sure though until you reboot and honeycomb comes back up. Also the only way to test it is to try loading up one of the update.zip files in recovery and see if it recognizes the file.
[Acer Iconia Tab A100] niteh@wk:
It rebooted ok after I applied these recovery images, so that's a good sign. I tried to put the 3.2.1 update.zip file in /mnt/sdcard and rebooted into recovery by holding down the Power and Vol button (the one nearest to the lock switch). It found the update.zip. Then the Android with the moving gears appeared with progress bar at the bottom. But the progress bar quickly disappeared, and the Android turned into the Android with the Exclaimation triangle. I waited a while for it to reboot. The Android version is still 3.2 when it rebooted. Does this mean the recovery is still hosed?

The update.zip file I used has Acer_A100_2.001.01_COM_GEN2.txt file in it so I think I have the correct update.zip for my build.
[Acer Iconia Tab A100] crossix:
Try this one:

http://vache-android.com/v1/download.php?fileID=109

The gen2 roms suck..
[Acer Iconia Tab A100] pr0crast1nate:
any more progress on this? :)
[Acer Iconia Tab A100] leclaheur:
hello ,

The clockworkmod method for the a500 don't work with the a100 ? The recovery are differents ?

thk
[Acer Iconia Tab A100] niabi:
I have gen2 should I install this? is this the latest gen1 ?

Thanks
[Acer Iconia Tab A100] enyce9:
From what I understand they are different...
[Acer Iconia Tab A100] ntan97:
Looking forward to recovery, and same here, recoveries from a500 will not work on a100...
[Acer Iconia Tab A100] pr0crast1nate:
Did you donate/sign the petition??
[Acer Iconia Tab A100] lpfan211:
The issue with the locked bootloader would it been possible to maybe run acer's stock rom in perhaps vmware on a win/Linux based machine. Reason I ask is because that would allow alot more resources to be used towards cracking/finding and exploit. I added please keep in mind I'm new to android and it seems like a good idea to me lol. Or borrowing certain things from the A500 boot loader? I have no clue just trying to maybe contribute something
[Acer Iconia Tab A100] crossix:
Unfortunatly its not that easy, first of all android uses something called a kernel which is kinda like an engine in a car. With out the engine the car just sits there and you cant very well put lets say a honda engine into a ford and expect it to work. Thats what you'd be trying to do by trying to load the a100 or any android rom thats built for an arm based processor into vmware or any other virtualization software.

Secondly, the a500 does not use the same encryption methods as the a100 (this has been talked about to death and is flogging the preverbial dead horse). Think of this as a combination lock vs a keybased lock, to open and see whats inside you have two totally diferent types of locks. The a500 had a keybased lock that someone picked :) we're still trying to figure out the combination to ours...
[Acer Iconia Tab A100] BigGunn:
I bet its 1234
[Acer Iconia Tab A100] enyce9:
I have the same combination on my luggage...
[Acer Iconia Tab A100] lpfan211:
Sorry guys it was a random brainstorm from a noob
[Acer Iconia Tab A100] dharr18:
1-2-3-4-5? That's the stupidest combination I've ever heard of in my life! That's the kinda thing an idiot would have on his luggage!
[Acer Iconia Tab A100] ntan97:
Absolutely. I've been playing around with different mods as late and am looking into getting into this. Will be following this closely and doing my own research.
[Acer Iconia Tab A100] californiarailroader:
I love 'Space Balls' ! Well, I love all Mel Brooks movies, the man is a GENIUS!
[Acer Iconia Tab A100] pr0crast1nate:
No worries Ipfan. It wouldn't be such a bad idea if there was a simulator for the A100 or something. That's how the blackberry playbook was originally rooted.

As for the Honda engine in a Ford, that absolutely COULD be done BUT...not without a bit of modification.

A better explanation of what we're up against is this: in order to install any change to the operating system, the tablet looks for an "update.zip" and this zip must have a secret passphrase like, say "Purple Monkey Dishwasher" (more or less) and if this passphrase is not said, the system will know the update.zip is not valid and reject it. Obviously the passphrase is MUCH longer and more complicated and not pronounceable but I'm sure you get the idea now. :D
[Acer Iconia Tab A100] lpfan211:
So this passpharse couldn't be slipstreamed into a update of our own. Idk if it's it the boot loader file or what put with maybe some copying and pasting ie. Stock rom bootloader used in a custom rom? I just trying to get a better understanding of things
[Acer Iconia Tab A100] pr0crast1nate:
Unfortunately it's a bit more complicated than that lol. The passphrase I referred to is more like "sadf987wrq2rasdf0973r*&%ljasdf38&(*&(*&jhlkjbsadf*)&(*^&jdflkjhdf(*(*(*&^" which can't be seen in plain text and would take a super computer years to brute force lol.

Check out this link to get your learn on :D http://www.androidpolice.com/2011/05/27/so-you-want-to-know-about-bootloaders-encryption-signing-and-locking-let-me-explain/

And if you really wanna hurt your brain check this one out http://cvpcs.org/blog/2011-06-14/2nd-init._what_it_is_and_how_it_works
[Acer Iconia Tab A100] lpfan211:
Thank you
[Acer Iconia Tab A100] bjones72751:
So my question is... If the update.zip has the key to decryption, why can't we find anything looking in the decrypted update.zip files that we have? Seems like it should be a partition that we could yank and use in our own update.zip.
[Acer Iconia Tab A100] Netgic:
when i flash a original update.zip then i decryped the file with this http://xdaforums.com/showthread.php?t=1099673

I can adjust the update.zip before?
[Acer Iconia Tab A100] masterpker2:
I found this interesting http://xdaforums.com/showthread.php?t=1079097
[Acer Iconia Tab A100] danifunker:
I have the recovery files for Acer_A100_2.007.04_EMEA_GB, they have been attached to this post. Use the same process to recover your recovery partition.
[Acer Iconia Tab A100] bjones12:
Would it be possible for someone to post the recovery files for Acer_A100_2.008.03_PA_CA ?

Or a link to someplace to download them?

Thanks
[Acer Iconia Tab A100] bjones12:
Anyone?

The instructions to create the files were posted in this thread.

I would really like to restore these so I can upgrade to ICS when it is released.

Thanks
[Acer Iconia Tab A100] crossix:
You only need to flash one of the hc recoverys that was released in the dev section and then upgrade to it through the updater. No need to dd anything.
[Acer Iconia Tab A100] bjones12:
Thanks for the reply but I am not able to flash anything to my tablet as my recovery is broken. When I try to boot into recovery I get the "spin forever" error. I stupidly installed the acer recovery app from the market as it said it was compatible with the a100.

I came across the link to this thread in your signature to fix a broken recovery but the files posted were not for the version I have installed.
[Acer Iconia Tab A100] smokku:
Flash how?

fastboot flash does not work on A100

---------- Post added at 08:37 PM ---------- Previous post was at 08:24 PM ----------

You can use any recovery partition image (p2) as long as you write matching signatures partition (p7).

But there's a caveat - the signatures may be dependent on device serial number, so p7 from one device may not fit another.

I may dump p1,p2 and p7 from my tab for you, but are you willing to take the risk of bricking your device even more? :rolleyes:
[Acer Iconia Tab A100] crossix:
You can use the images that dani posted from above, just follow the instructions that he quoted.

I meant "flashing" as in using recovery to restore a recovery rom (just a technicality). And no, your serials do not have to match as long as you dont touch the aboot partition. You just have to match the GEN model of the current rom your using. So any dd images of p1 and p2 will work as long as they match what current GEN of rom you have installed and dd the images back to the correct partition. Dont dd p7...
[Acer Iconia Tab A100] bjones12:
Thanks a lot, it worked perfectly. Very much appreciated.
[Acer Iconia Tab A100] smokku:
I don't quite understand how can you use a borked recovery partition to fix a borked recovery partition... :confused:

Which partition do you call 'aboot partition'?

If I get it right, p7 stores signatures used to verify p1 and p2.

So it's either:

1. you write p1/p2 with matching version to signatures on p7

2. you write p1/p2 together with writin matching signatures to p7

So you say, that p7 signatures are not device dependent? That is a good news.

If only we had working APX :/
[Acer Iconia Tab A100] Icewyng:
He means /dev/block/mmcblk0p8.

Yes... NvFlash would make it a lot more easier to restore a broken A100. I am sure the aboot partition might have the key to it somehow...
[Acer Iconia Tab A100] smokku:
/dev/block/mmcblk0p8 is user /data partition
[Acer Iconia Tab A100] Icewyng:
recovery filesystem table

=========================

0 /tmp ramdisk (null) (null) 0

1 /system ext4 /dev/block/mmcblk0p3 (null) 0

2 /data ext4 /dev/block/mmcblk0p8 (null) -1048576

3 /cache ext4 /dev/block/mmcblk0p4 (null) 0

4 /misc emmc /dev/block/mmcblk0p5 (null) 0

5 /flex ext4 /dev/block/mmcblk0p6 (null) 0

6 /mnt/sdcard vfat /dev/block/mmcblk1p1 (null) 0

7 /boot emmc /dev/block/mmcblk0p2 (null) 0

8 /aboot emmc /dev/block/mmcblk0p8 (null) 0

9 /recovery emmc /dev/block/mmcblk0p1 (null) 0

It contains both the data & aboot partitions.
[Acer Iconia Tab A100] smokku:
How does one put two partitions on one partition?
[Acer Iconia Tab A100] Icewyng:
Probably the same way you can format a HDD in 2 partitions. One is Ext4 and the aboot is eMMC. They are mounted at different parts of the partition.
[Acer Iconia Tab A100] smokku:
I still don't get it.

Could you please show me example commands how can I make two different filesystems on one partition and mount them to different directories?
[Acer Iconia Tab A100] ptesmoke:
bad analogy man. making two partitions on a hard drive is just that....two partitions. not two partitions within a partition. now there may be two different file systems on a single partition.... /aboot and /data.
[Acer Iconia Tab A100] smokku:
That's also new to me.

How?
[Acer Iconia Tab A100] LoverBoyV:
Don't quote me on this, as I have no clue, but it is prolly a virtual file system. Linux uses those rather often. Like a loopfs on a persistent USB install.
[Acer Iconia Tab A100] ptesmoke:
yea im still confused really...i think its more a linux expert question. as it runs off mount points and not so much like a windows box where u have a primary partition and other logical partitions. i keep getting confused between linux and x86 terminology. so ill wait for a linux guy to straighten me out haha.
[Acer Iconia Tab A100] BrockVegas:
Success!!?!

Success?

http://xdaforums.com/showthread.php?t=1557445
[Acer Iconia Tab A100] peporras:
I suggest that now that we are open and the bootloader installed and working recovery_thor17_403.img recover dmsg.log file in which is the real serial.no our A100 for future contingencies and if I can work with NVFLASH I have it safely hehe
[Acer Iconia Tab A100] peporras:
You can do this for my boot fastboot displays "verified boot failed"
[Desire HD Q&A, Help & Troubleshooting] iPwn_:
It was working fine yesterday, but today in MIUI (same as yesterday), I can tell the phone to mount the SD card but it doesn't show up on my computer. So the phone says it's mounted, but it apparently isn't.

To make sure it wasn't a problem with the ROM, I rebooted into to CWM and mounted there, same thing. CWM says it's mounted but it doesn't show up on my computer.

I can view and edit the files on the SD card through ES File Explorer, but the SD card no longer appears on my computer?

It's not the USB port, I plugged in a flash drive and it worked. And I'm using the stock HTC Cable.

This is on my Inspire.

I'm inclined to say it's the wire, but nothing happened to the wire between today and yesterday. It was just sitting on the floor, and it still charges the device. :confused:

I did reboot my computer and phone...still no luck.

Does USB debugging have anything to do with it? I've been rooted for months and I never disabled and it didn't cause problems :/
[Desire HD Q&A, Help & Troubleshooting] Gizmoe:
Out of the two inspires in my household, one of my cables stopped working only a month after I bought it. It still works for charging but does not work for data. Have you tried a different cable just to be sure.
[Desire HD Q&A, Help & Troubleshooting] qkevinto:
It might not be the phone nor the Rom since you've done some basic trouble shooting. It could possibly be your PC. Have you tried it on another computer? Possible driver problems or drive letter conflict might cause it not to display in Computer.

You can check whether Windows has detected your device by going to Start > Devices and Printers, it will pop up there if it is detected. Otherwise you can also check Disk Management. To do this just right-click on Computer > Manage > Disk Management. If you see the removable disk and sure that it is your SD card then it might be a driver letter conflict which you can easily fix by right-clicking on the removable disk and clicking "Change Driver Letter and Paths" and changing it to an unused driver letter. I've had similar issues with USB drives in the past. Hope this helps!

Cheers
[HTC ChaCha] orbite:
Dear All

I have just gotten the HTC Cha Cha, I need to make a video call to another device such as Nokia through 3G net work using dial pad, but it do not allow me to do that.

I think HTC has blocked this function on Cha Cha, it need some mod or APP to active again this function. So that Can someone help me to active this function, please? I really need it because I must to call to my children every 2 days. I think not only me but also many Cha Cha user need that.

Thanks alot and best regard

Orbite

P/s: Dear Admin, if have any theart about this question, please sent me to there; or this post is wrong topic, please sent me there. Thanks
[HTC ChaCha] ajeevlal:
you have to post this question in 'Chacha general'
[HTC ChaCha] e.japonica:
sorry left out some info. chacha does not come with stock video calling function. it can be done thru 3rd party apps for now.

Quote from some others forum.
[HTC ChaCha] Mr. Clown:
Thread moved to proper forum.
[HTC ChaCha] orbite:
Hi all

I have contacted with HTC help desk, they told to me that: many people asked them about that function, and they are thinking to open it.

Otherwise they also said that this function will be open with some software adjustment. Sothat could anyone adjust that? My thinking very simply: copy the app which support to make video-call from samsung or LG and add to Cha Cha...

All Master of Androi system, Please help to enable this function, I really need to used.

Thanks
[Android Apps and Games] squareparticle:
I created a free mini Christmas game for the Android and I wanted to get peoples opinions on it. Its called Santa's Route and it can be found in the Android Marketplace. I can't post links or images of it yet as I am too new.

Here is a description:

You play as Santa Claus and its your job to drop presents into peoples chimneys to collect cookies. You have to keep up the Chirstmas spirit as long as you can, however you need to be careful of the obstacles that knock presents off your sled.
[Android Apps and Games] squareparticle:
I added an update today.

I made Santa smaller

added more deer

gave them a bobbing motion

made the houses look darker likes its night time
[Samsung Galaxy SL i9003] wwwescape:
Hi,

I searched thorugh the forums but found no similar threads.

The video recording on my Samsung Galaxy SL i9003 has suddenly become very dark. The camera is perfect and the video recording used to be perfect as well and have a number of recorded 720x480 videos which are all bright and clear. I am not sure if this has happened because I upgraded to Gingerbread 2.3.6 or because of an app because I've done a factory reset of the phone a number of times and it's still bad. I noticed that when I increase the resolution from 720x480 to 1280x720 it does get a bit better but it still useless for recording.

Can someone please help me.
[Samsung Galaxy SL i9003] ggclanlord:
Maybe you might have lowerer Exposure Value.

Check and set it to 0.
[Samsung Galaxy SL i9003] SikanderKeynes:
Facing same problem, any solution ????
[Samsung Galaxy SL i9003] sirilpta:
1280*720 use this resolution in bright areas

got new galaxy i9003 on replacement.....

ddkp2/ext4/cwm 5
[Samsung Galaxy SL i9003] bangalorerohan:
With 1280 X 720, I am having the SAME recording. (The good one)

Compared with friend's XXKPE and My XXKPQ, the same quality on 1280 X720 (:
[Samsung Galaxy SL i9003] SikanderKeynes:
Yes, It's better in 1280*720 but still recording was much better in froyo in low light areas as compare to xxkpn/xxkpq. Recording indoor with low light sucks big time in gingerbread.