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[Q] Help: A500 bricked?

I tried to upgrade my A500 to Ice Cream Sandwich and ended up with a non-bootable tablet. I uploaded a recovery partition and can boot into it, but every attempt to flash a new ROM after formatting doesn't correct the problem. The flash completes, but it doesn't get past the Acer prompt on startup. I see many web pages promising solutions, but I'm sort of lost here. Can anyone help?
Evan Jones

scoopjones said:
I tried to upgrade my A500 to Ice Cream Sandwich and ended up with a non-bootable tablet. I uploaded a recovery partition and can boot into it, but every attempt to flash a new ROM after formatting doesn't correct the problem. The flash completes, but it doesn't get past the Acer prompt on startup. I see many web pages promising solutions, but I'm sort of lost here. Can anyone help?
Evan Jones
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Click to collapse
Well Evan, this is going to depend on exactly where you were when you started, and where you are now. So a little more info from you is needed.
1. What OS were you running when you started. HC? Stock?
2. Exactly what did you install? Was it an OTA? Or a rooted ICS build?
3. You said you uploaded a recovery partition. How and what did you do?
4. When you boot, do you see text in the upper lt corner about a mod bootloader version?
Note, that if you have an ICS Bootloader, you can no longer run HC Roms in most cases. And keep in mind there are a couple different versions of custom ICS Roms. 1 for HC bootloader tabs, and 1 for ICS UL bootloader tabs.
At this point, without knowing any other info, I would probably do the NVFlash of the unlocked Ver2 ICS Bootloader & Recovery from this thread. Understand you MUST Have your UID number and follow the link to convert it. If you didn't write it down before, you should be able to get it from your Nandroid Recovery backups on your Ext SD card when you did previous recovery backups before.
http://forum.xda-developers.com/showthread.php?t=1522384
Remember, I didn't say to DO this, it's only a suggestion based on a lack of specific information. When you ask for help in this manner, it is better to provide all the information that is relevant. There are different fixes for different problems, and the more info we have, the better able to help you.

Unable to boot
Ok, I'll try to answer your questions. I'm really more familiar with Linux than Android, so I hope I understand what you're asking.
I had a rooted version of Taboonay 2.0 installed before (3.2, I think). I downloaded the Ice Cream Sandwich and tried to flash it. That's when it would no longer boot. I downloaded a recovery image (RA-ICONIA-3.16-getitnowmarketing), and that simply changes the Android system recovery menu. From there, it's possible to format and flash ROMs, but nothing will boot.
Is that close to what you were asking?

Unable to boot
Incidentally, the adb won't connect to my laptop, but I can use the ext SD card to copy files into it if necessary.

scoopjones said:
Incidentally, the adb won't connect to my laptop, but I can use the ext SD card to copy files into it if necessary.
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Click to collapse
you have to get adb working before you can fix anything, see my guide here start from no.3 - hopefully that will do it. sometimes the drvers get a bit screwy after goin into apx mode and require reinstalling but lets just start with the adb

is ubuntu practical for daily use yet?

i saw this was ubuntus base device and was reailly curious on how it works. seems yo be laot of bugs so is it racical for daily use? can i put it into wugs bootloader or reboot into recovery and restore a backup or something if i want to get android back?
how much space does it leave me?

Android-IA or Windows/Android dual boot tablet

I have spent about a week now trying to figure out if it's possible to boot Android-IA on a 32 bit UEFI system. I have seen threads on the mailing list and other sites that apparently have gotten it working on the T100TA, but the links to their compiled roms are dead. I specifically am looking at doing this on an HP Stream 7 and making a dual boot car install. Has anyone successfully booted Android-IA on 32bit UEFI?
If this is not possible, how do the Chinese tablet manufactures do it with the same Atom chipset? I need a 7" tablet that can dual boot Android and Windows. Is there any quality model I should look for? I have seen the Cube iWork 7 which looks promising, and seems to be perfect for my needs. I will need root in Android for the car install.
I've been a lurker on these forums for a while, but just now got around to making an account. Hopefully someone here can share their experiences or suggestions. Thank you all

May be it's too late to reply, but anyway.
iWork 7 DualOS BIOS has both UEFI64 and UEFI32 booting. If you load Android(i.e. Linux), then 64bit mode is using. If you boot Windows, then 32bit mode is using.

sorg said:
May be it's too late to reply, but anyway.
iWork 7 DualOS BIOS has both UEFI64 and UEFI32 booting. If you load Android(i.e. Linux), then 64bit mode is using. If you boot Windows, then 32bit mode is using.
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Click to collapse
I have intel x86 based device Yoga tab 2 830LC, i used tethred twrp and made the back up of kitkat build, after some time i upgraded my system to official lollipop, but when i tried to restore to kitkat build in twrp, i am uanble to boot, and bios screen pops up, any solution will be much appreciated sir...
P.S. Sorry for posting in wrong forum, I was not able to pm you thats why i dared
Sent from my YOGA Tablet 2-830LC

QuazIqbal said:
I have intel x86 based device Yoga tab 2 830LC, i used tethred twrp and made the back up of kitkat build, after some time i upgraded my system to official lollipop, but when i tried to restore to kitkat build in twrp, i am uanble to boot, and bios screen pops up, any solution will be much appreciated sir...
P.S. Sorry for posting in wrong forum, I was not able to pm you thats why i dared
Sent from my YOGA Tablet 2-830LC
Click to expand...
Click to collapse
Probably, your backup isn't full, i.e., not all partitions are backed up. TWRP sees only standard partitions like boot, data, system. But there are many service partitions. For example, on my iWork7 there are 17(!) partitions used solely by Android.
So, i think, after downgrading you've got mess of old and new versions of partitions and they are not compatible to each other.
So, you need initial Android installer (like my iWork7 has). Contact Lenovo support.

sorg said:
Probably, your backup isn't full, i.e., not all partitions are backed up. TWRP sees only standard partitions like boot, data, system. But there are many service partitions. For example, on my iWork7 there are 17(!) partitions used solely by Android.
So, i think, after downgrading you've got mess of old and new versions of partitions and they are not compatible to each other.
So, you need initial Android installer (like my iWork7 has). Contact Lenovo support.
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Click to collapse
I have recovered from this mayhem, i had to flash official firmware but now I am in another difficult situation.
After updating to lollipop, I am facing a weird 'sim not ready' error, no mobile netrwork appears nor the setting of mobile network is configurable, no data(2g,3g,4g) no voice call support.
When i insert sim card it shows sim added notification, also telecom stk app shows that sim has been read,
but still I am unable to figure it out why the goddamn network doesnot shows up? Btw wifi is working nice.
Is any body also facing same issue? What causes this error?Any help to resolve this will be much appreciated.*
P.S. I am in good network and I have also tried different sim cards but no luck so far....
Sent from my YOGA Tablet 2-830LC

Looking for a group of Ubuntu Touch devs to join

Hi,
I have some free time and would like to join a group of Ubuntu Touch devs. Is this a good place to ask or should I re-post on Canonical?

You can attempt to re-post on Canonical's forums, but the Ubuntu Touch Google+ Community is pretty active with both developers that work on Ubuntu Touch and consumers. I know I've seen Canonical's Michael Hall post in there as well as a couple others at some points.

https://ubports.com
This might be the place for you. They are asking for devs.
Good luck. I hope you start with the shamu (Nexus 6)

kidhudi said:
https://ubports.com
This might be the place for you. They are asking for devs.
Good luck. I hope you start with the shamu (Nexus 6)
Click to expand...
Click to collapse
I have a Nexus 5 and I want to dual boot Ubuntu with Android. There are 2 instructions on ubports.com but the one using MultiROM(to dual boot) has no link! I followed other guides with MultiROM but Ubuntu won't boot. Android's still working fine, though.

Matrixians 14 said:
I have a Nexus 5 and I want to dual boot Ubuntu with Android. There are 2 instructions on ubports.com but the one using MultiROM(to dual boot) has no link! I followed other guides with MultiROM but Ubuntu won't boot. Android's still working fine, though.
Click to expand...
Click to collapse
You will likely need to look into the official Ubuntu Dualboot solution and adapt that for the hammerhead. Ubports ROMs are intended to be installed via the ubuntu-device-flash commands only and are likely not supported under MultiROM easily.
That said, if you have an UBports system image installed via MultiROM, and it appears via multirom, you can always check /proc/last_kmsg after a failed Ubuntu Boot (while in multirom's boot manager) to see where the boot went bad, you could also open the ROM under MultiROM's recovery and hit Patch init and see if that helps.
Other than that, I'm afraid the only supported installation method for the community ports are the instructions listed on the page. You may also have some luck looking for KDE Plasma Mobile tutorials (which use a standard Ubuntu Touch image for their basic installation, not sure if they do the same thing as ubuntu-device-flash though).
One last thought, have you tried MultiROM manager? It may have images for your system (I recommend going no further than rc-proposed, devel does not run many apps from the Store and is based off Xenial, sp there's some library incompatibilities with apps installed from the Ubuntu Store. Devel branches are also not guaranteed to boot, however rc-proposed and stable should at least boot for you unless their builds are fundamentally broken, in which case, you should bring it up with the maintainer)

Thanks, but now Ubuntu Touch worked. I installed the dual boot app and added the channels for hammerhead. But now Everytime I boot into Ubuntu it removes my custom recovery. Instead of booting into the recovery, it boots into Ubuntu Touch, and it only happens if I reboot into Ubuntu Touch, so I basically have to reinstall recovery after using Ubuntu, which is very inconvenient.

Matrixians 14 said:
Thanks, but now Ubuntu Touch worked. I installed the dual boot app and added the channels for hammerhead. But now Everytime I boot into Ubuntu it removes my custom recovery. Instead of booting into the recovery, it boots into Ubuntu Touch, and it only happens if I reboot into Ubuntu Touch, so I basically have to reinstall recovery after using Ubuntu, which is very inconvenient.
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Click to collapse
I replied on the G+ page too, but figured I'd post here as well so others may benefit if I'm right here. -SNIP-
Edit: I just realized how the dualboot utility works.. It is likely the application overwriting your recovery image. If you want to keep MultiROM, I'm afraid you'll need to reinstall Ubuntu with MultiROM manager as the dualboot utility writes Ubuntu's boot.img to the recovery partition to boot Ubuntu.

Yeah, thanks, but it only works with the dual boot utility. I have my issues with MultiROM if you've read the first post on G+. But now I restored my system to a previous state when there was no dual boot utility so I don't want Ubuntu Touch anymore. Linux Deploy would do the trick, but now even IT has problems installing trusty. After the installation, I reconfigured it from the Linux Deploy menu and when I start it, it failed to start the VNC server and I don't know why. Is it the architecture of Trusty that i chose?

I did see your post, my apologies that MultiROM isn't booting for you, I ran into this weird issue myself on the Flo, normally it can be solved from trying other revision numbers in either the stable or rc-proposed channel. Sadly, through the Dualboot installer, there's no way around this (bar writing an /etc/init.d script for Android that automatically flashes the TWRP image when Android boots back up)
It may very well be the architecture of trusty. I would recommend trying vivid, saucy, wily or xenial. (any of the more recent versions, trusty is rather old at this point and you would've been getting Vivid [15.04] via Ubuntu Touch)
That said, you'll get much more performance using XServer XSDL from the Play Store and setting Linux Deploy to use it (X Server -> Use XServer XSDL), it also allows you to use any X application remotely or locally (on a remote machine you'd do export DISPLAY=[Tablet IP]:0)
As for Ubuntu Touch, if you go back through and attempt MultiROM again, start with the latest revision (I recommend staying far away from devel and devel-proposed unless you are purposely wanting to develop applications for Xenial, most applications targeting Vivid here don't work.) and then if the latest fails to boot, try the next one down the line. Another issue here could be a kernel that doesn't properly support KEXEC, have you tried MultiROM with a different KEXEC compatible kernel? I honestly can only recommend two different configurations, the singluar installation (Ubuntu being the only OS, gives you the most storage space) or MultiROM :\ I don't have much experience with the Dualboot app.

Android to Windows Hack or Dual boot Option?

So im thinking of purchasing one of these when the come out here and i was wondering about an android to windows os hack. Will there be one in the immediate future and will dual booting be an option?

The hardware is exactly the same.
There must be a way to dual boot, hopefully others on this forum can figure out how to do this if Lenovo doesn't facilitate dual boot themselves
Best

I believe there's a different BIOS for Win vs Android. Could have sworn I saw the Windows BIOS posted on the Lenovo support site prior to the Oct 17 launch. It seems gone now though, unless I'm missing something or went to the wrong link? Unlikely you can install Win without a different BIOS.

There is some clear hardware differences with the Android and Windows tablets. Specifically, 2 different physical layouts for the halo keyboard, where the windows one has defined left and right mouse click buttons. There doesn't seem to be any way of accessing the BIOS on the Android tablet, and it does have the usual Android power + volume up, power + volume down recovery options, so it looks like it boot directly to the boot loader.

The Bios is still there ... but how would you flash it?
http://support.lenovo.com/de/de/products/Tablets/Yoga-Series/YOGA-Book/downloads/DS119182

ok so there is also android open source code available in their site, any chance of making a custom rom?

I wonder if we could flash the Chuwi 12 roms onto this given that Chuwi12 has dual boot already?
This is reallly really stupid to me, why not provide dual boot in the first place? I would not mind shelling out $100 more for a dual boot version. Now if I want the windows version I will need to spend another $550 to get another OS with the same device. I will end up having 2 same devices, but that is so anti-mobile really. Do I have to carry 2 hardware devices so i can have 2 OSes at the same time?
Lenovo get some grip please and provide a dual OS version.

win 10 driver
Today, the windos 10 drivers are online..
The drivers you get with levono support with input of the serial number
It must now be possible to build a dual system
Tastertur chipset audio and more .

igelelf said:
Today, the windos 10 drivers are online..
The drivers you get with levono support with input of the serial number
It must now be possible to build a dual system
Tastertur chipset audio and more .
Click to expand...
Click to collapse
Could you post the link for the windows 10 drivers? also any idea on how to unlock the bootloader?

Hi,
earthCallingAngela did unlock the bootlader. .
My background knowledge about booting is very low. But I think there are huge differences between Android and Windows. I think If a system can boot via PC-Bios or Android-Boot-Loader is "on the chip". If this is correct you would need a Android-Boot-Loader that does boot into a windows ... IMO this is no "easy to do". May be the guys who did create Remix OS found a way to do that ...?

Can we use Chuwi 12's disk image somehow? It comes with dual boot.

hajkan said:
Can we use Chuwi 12's disk image somehow? It comes with dual boot.
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Click to collapse
Are the two the same hardware? My understanding is that unless the hardware is very similar, you can't use other ROMs without a *TON* of work.

so i was able to install android x86 6.0 on my yoga book, unfortunately i managed to do it over my windows install so now i just need to reinstall windows lol.....
---------- Post added at 06:35 PM ---------- Previous post was at 05:54 PM ----------
decided to install 7.0 over my 6.0 install i just made and messed everything up. now im back to just trying to get gparted to run so i can reformat and start over.

bisharat said:
Could you post the link for the windows 10 drivers? also any idea on how to unlock the bootloader?
Click to expand...
Click to collapse
http://support.lenovo.com/kr/en/pro... and Software|Drivers and Software&beta=false
you can download yogabook win10(64bit) driver here.
edited--
you should change operating system dropdown menu from android to windows10

Hi & Happy New Year
Now it's possible to get root with android version
I have a YogaBook with Windows version ; Someone can make a backup Android version?
Maybe it's possible to create a dual boot with the windows version I cross the fingers :fingers-crossed:

Where and how?
ThomasHardy said:
Hi & Happy New Year
Now it's possible to get root with android version
Click to expand...
Click to collapse

someone can said me, where i found an android image? (original yoga book, of course) i try to install Remix OS and Android-x86 6.0-r1 released from Android-x86.org but, its can't run. graphics issues and reboot.
i install in a MicroSD and boot it booting yogabook hold volume up + power boton and select boot menu, but it fail on boot.
i have yoga book windows. any idea?
thanks
sorry for my english..

I'm exploring this as well.
Since the BIOS and drivers available (just tested with my serial#), it does seem like it would be relatively easy to dual-boot, provided you can get past the loader issue.
I've done many dual-boot setups, just not since the Win7 days, with the Win8 and forward it's gotten quite a bit trickier, the loader does a bunch of "extra" stuff, boot timing and such, to protect itself.
I've also never done an Android/Windows dual-boot, mostly just Win/Win or Win/Unix.
I think you'd have to figure out how to bootstrap these, so the custom loader can take over, and load from there, but this is a bit beyond my Android capabilities.
Has anyone even tried this? I assume the power/volume keys must work, to get at the loader?

Hi there !
I've just unlocked my Yoga Book's android bootloader and made a backup. I'm trying to install Windows 10 and replace Android with it. The problem is that I don't know how to boot the device from the USB drive.
Does anyone know how to do that ? Even if rooting is required ?
P.S. : I can't google it as all results link to "how to boot a PC from android device", which is the reverse...

Totjoss said:
Hi there !
I've just unlocked my Yoga Book's android bootloader and made a backup. I'm trying to install Windows 10 and replace Android with it. The problem is that I don't know how to boot the device from the USB drive.
Does anyone know how to do that ? Even if rooting is required ?
P.S. : I can't google it as all results link to "how to boot a PC from android device", which is the reverse...
Click to expand...
Click to collapse
simple...you can't do that! it's not possible to boot usb from android bootloader or recovery.