yashsingh1/xdaforums huggingface dataset:
[Android General] ichi go:
Hello everyone,

I bought this tablet on ebay and it seems that the ROM preinstalled is a test ROM.

I searched the web to find a custom ROM but I couldn't find much info.

I found the way to root the tablet but that's all.

Is there anyone who can indicate me a link to a stock rom or a good custom one?

Thanks for those who will read and help!
[Android General] mmis:
What do you mean by TEST ROM?!!! this is ridiculous, I have the tablet and it's working like a charm even I received over air update yesterday, the only odd is that I can't use it as a phone because Lenovo has no license yet for that it's available only in the Chinese version, and I think this will be solved later when they start launching their mobile phones all over the world.
[Android General] ichi go:
Hello mmis,

Test rom is not the correct terms but I didn't know how to call that ! ;)

The problem is that every widget I put on the desktop is loading but never display anything.

The information in "About tablet" are the following :

Model number : IdeaTab A2107A-H

Android Version : 4.0.3

Baseband version : MAUI.11AMD.W11.50.SP.V13, 2012/05/25 01:09

Build number : A2107A-H_S307_120605

If I search for system updates, it doesn't find anything. If I click on firmware update, the settings FC.

I made a factory reset but no luck.

That's why I thought it wasn't a stable version.
[Android General] mmis:
As long as you tried the factory reset with no luck, I think in your case its better to get back to Lenovo customer service or your local dealer if it's under warranty, they should be able to help you. it's a new device in the market and it will be difficult to find custom ROM for a while or even someone to give model-specific help. Good Luck :)
[Android General] BloodSyphon:
Would you mind linking to the instructions on how to root this thing?
[Android General] ichi go:
Sure, no problem !

After several hours of search and difficulties to register onto Chinese websites ;)

I managed to find the attached file. I take no credit for the tool because it was developped by someone else (SNARL I guess)

It was missing the superuser apk inside so I put it back and also translate the steps to English.

Here are the steps :

- Connect the tablet in Debug USB mode

- Launch root.bat

- The device will reboot at each of the 3 steps

If you need more info, don't mind to ask!

Here is the link of the original thread :

http://3g.lenovo.com/thread-69003-1-1.html
[Android General] BloodSyphon:
Fantastic, thank you very much.
[Android General] robh41:
LePad Chinese Model A2107A-H

I have a Chinese issue model of the A2107A-H that has the dual sim card cellular feature. I've been trying to get it rooted to get rid of the Chinese apks on it, but normal rooting software has not been successful so far, including the one posted here from SNARL via Ichi go's post. I get a "device not found" error message and in device manager on my PC it indicates that there is no driver installed for the device. I have "debug" turned on and the USB link seems to be working as I can see file folders on the device, but the rooting software will not run. I've tried several of the most well known methods with no luck. Any ideas on this would be appreciated and in particular, if there is a driver I need to have installed to get the rooting software to work??

TIA!!!

Rob
[Android General] mmis:
First of all many thanks to you ichi go it was very easy to root this device as instructed, but as the one I have does not have the phone calling capability, I replaced the phone.apk with different one but now the device does not recognize the sim card at all, I tried to push many versions of phone.apk to system folder with no luck, it seems even if I put the apk in the system folder the device will not launch it at all, could you please help me in that.
[Android General] junooni:
I've had this tablet for a while and love it. I just got the OTA update and its downloading now.

I'm a also keen on rooting it and inns installing a custom ROM. I guess once its a bit more common, we can expect a dedicated Dev community here on XDA
[Android General] junooni:
The update failed to install. I'm not rooted or anything but upon restart it gave a signature verification error.

Any way to fix this?

Edit: got it! was a path error since i had changed the default storage.

but i can't figure out any changes :(
[Android General] ichi go:
How does your device appear in the device manager? For sure, the adb driver isn't installed. If it's not the case, download android sdk and then the Google USB driver in the extra section.
[Android General] ichi go:
I didn't try to make phone calls for now with it but I will test and come back to you if I find something interesting.
[Android General] syserr:
FM Tuner - perfect for in-dash?

The in-dash car tablet people should be happy to hear the A2107 has an FM Tuner. It's one of the few tablets that has a radio tuner, and the only modern 7" that I know of. I just ordered one. I will report back.
[Android General] ichi go:
The Chinese stock rom I installed has the phone ability and that works very well! The problem of this stock rom is that the Google services aren't there. I'm trying to find a way to install the zip file but I need to know the exact path of the recovery partition.

I tried to find it with the cat /proc/emmc command but this partition isn't listed.

If anyone has an idea... :)
[Android General] mmis:
So I understood that you managed to flash the Chinese stock ROM, am I right?!! please tell me how to do as I am facing serious problems with my device, I managed to root and then I changed the phone.apk (what the hell I was thinking of) and now I have the the error message android.process.acore stopped working and sometimes the sittings force closed, I tried to re root, factory reset and deleting cache of almost everything with no use, even I contacted the Lenovo CS to reinstall the original firmware, I think they will charge me for that :crying:

by the way I don't have contacts anymore (I installed it manually) and the most impressive thing that the device doesn't recognize the SIM card (I cleverly deleted the original one phone.apk :silly:) and what ever apk I push into the system/app folder and change the permissions it will not install after reboot.

So...what do you think guys?!! any help?
[Android General] BloodSyphon:
I've confirmed this does work on the A2107-F.

I had some trouble with the ADB driver. I can't post links, so you will have to google it, but I used adb_driver_20110720.zip for the drivers. I forced it to install via Update Driver > Browse my computer > let me pick > have disk > pointed to the android_winusb.inf file > selected the thinkpad option, it was the bottom of the two.

I also had to manually turn the tablet back on after the first reboot, but it went fine after that.
[Android General] valravn:
can someone show me where to get the rom?

in the chinese forum, i cant register, because lenovo login is buggy for me. maybe because of location,,
[Android General] ichi go:
Hi mmis,

I will upload tonight (if i have the time to) all the needed files to install the Chinese ROM (tools and procedure included).

Btw, I managed to install all the Google services and all is working well! The only thing is that the OS can only be put in English. All other languages are Chinese variants.
[Android General] pemergency:
Hi I just flash tablet with a chinesse rom A2107A_H_S121_120525 and right now the device don't turning on anymore. The flashing is still possible. So I need a stock rom please
[Android General] mazell:
Still the same Problem :/ What if the battery is too low?
[Android General] mazell:
I flashed now the chinese Firmware. Everything is fine now, but where is the Play Store?
[Android General] pemergency:
This is the tricky part. Read this thread from begin please
[Android General] valravn:
of course i'll support you. you deserve that much allresy for helping me install angelas rom :)
[Android General] pemergency:
https://www.dropbox.com/sh/yc7z5904i0e1ua6/6FSVniszMM#/
[Android General] lieutenant132:
Need ur help

I just installed the Chinese firmware on my Lenovo A2107a-H and the calling feature is running well but it is with Chinese language. All applications expressed with the Chinese language. Is there any way to change the tablet language to English?

I hope u reply me quickly.

Thanks in advance
[Android General] cognus:
i think the language switch is already been addressed above
[Android General] pemergency:
In a chinese firmware is a lots of bugs including the problem with swiching language (when you trying to swich language te phone is showing a message "this app has been closed" and it is a nothing you can do with it) all of this problem are fixed in my custom. Good luck
[Android General] csns:
Can someone please upload the original files (from pemergency) to another host?

Non of the links I found here seem to be working and the torrent is "dead".

Many thanks.
[Android General] AbduL_PT:
I found this in another forum, maybe someone can use it. It´s a TWRP for a2107.

http://4pda.ru/forum/index.php?s=&showtopic=286687&view=findpost&p=17680931

and

http://bbs.lenovomobile.com/forum.php?mod=viewthread&tid=99763

http://bbs.lenovomobile.com/forum.php?mod=viewthread&tid=99763&fromuid=408727
[Android General] pemergency:
Is just a replacement of CWM and the funniest thing is as you need to have CWM installed to install this one ;)
[Android General] AbduL_PT:
u can use this with SP like u flashing CWM. And it´s free, as backup funcionallity and is touch.
[Android General] pemergency:
Not this version, this is not a img file but zip for updating from CWM ;)
[Android General] phyoewai:
hi... .. i just need cwm recovey. i already downloaded the original stock rom for a2107a-h (it's chinese). dropbox is showing me 404 not found!!!! :(so.. pls guide me for install cwm recovery to A2107A-H. Help!!!!!! ... I'm so noob on xda. pls help me!.... thx million in advanced! :D
[Android General] Cristian.Ene:
I am using the custom of Pemergency, but the data connection is not working for me. Anyone else has the same problem? any fixes?
[Android General] pemergency:
In some networks like for example VODAFONE you must clear the username and password

Go to Wireless & Network/ More/ Mobile Networks/Access Point Names/

and edit your internet connection:

- remove anything from username and password

from this:

Username

web

Password

***

to this

Username

Password

---------- Post added at 12:53 PM ---------- Previous post was at 12:36 PM ----------

Go to this thread http://xdaforums.com/show....php?t=2013156. There is a manual how to install cwm
[Android General] manwithmanypiercings:
Have a working link?
[Android General] pemergency:
Sorry

http://xdaforums.com/showthread.php?t=2013156
[Android General] manwithmanypiercings:
Thanks for that. Now know anywhere I can get custom ROM's for an A2107A-F?
[Android General] pemergency:
Tell me something more about your dvice

Ram, capacity, dual sim?
[Android General] syserr:
Sometimes it's hard to keep track of who is who and who has what model.

If you would like to experiment with getting your NVRAM stuff back all the way to stock.. and you are familiar with SP Flash Tool, and if you have nvram.bin or a nvram.img, then try what I came up with last night:

http://xdaforums.com/showpost.php?p=46460264&postcount=35

I'm doing a bunch of testing right now on what makes /data/nvram and the NVRAM block work.
[Android General] InfernoChz:
Im going to try it ,im gonna tell you if it worked or not ,and im going to try it on different roms.
[Android General] syserr:
The MEID and NVRAM issue bug me. I can walk you through about anything if you need help. I suspect it's a disconnect between /data/nvram and the NVRAM block that causes all these problems, but I can't prove it yet.

FYI.... (found this last night and a few other PDFs)

http://read.pudn.com/downloads110/ebook/457724/UEM_NVRAM_Customizable.pdf

Page 13. This is old, but I think it's similar to what is on their Android devices today.

---------- Post added at 10:27 PM ---------- Previous post was at 09:58 PM ----------

Make sure after you push the nvram.img with SPFT, that you don't allow a normal boot after. Go Directly into Recovery and do a Wipe Data. With the NVRAM block populated and the /data/nvram directory non-existant... I believe the NVRAM block info is copied down into the /data/nvram by the booting the kernel's init-ramdisk. But /data/nvram has to not exist for this to happen.
[Android General] porga:
Hello, please tell me which custom ROM for lenovo a2107-h (dual sim) has Croatian language selectable during initial setup (like AOSP has)

Thank you in advance.
[Android General] NEO130:
Try the foxtrot rom. Maybe slowenia is in it.
[Android General] porga:
Hello, that is not the same, Sernian might pass, but slovenian is not even close.
[Android General] masood-ma:
Not coming up after unbrick

I could format the file to unbrick the tablet sp flash tool'm planning on starting logo is displayed on the screen does not turn on with the power button, but it can not do nothing. I reset the device by holding down the power button and the vol cwm but I do not know what to do when they come up tablet

The legendary rom you put on your external memory option is installed, I installed the files on the external memory
[Android General] syserr:
I suspected not many people would be able to tell you, so I'm testing:

Foxtrot has a whole pile of languages, including "hrvatsk"

LeWa only has 3 - English, Russian, Chinese

I'll check a few more....

Update:

Euro Stock - Deutch, English, Spanish, French, Italian, Russian, Chinese

Chinese Mod - English, Chinese (both)

BTW, this might come in handy... a mirror of makbro's collection with names of the files in addition to the links. See the rom-descriptions.txt

https://drive.google.com/folderview?id=0B8PcIZoLeGNuSmVBNGFzcW4zTjg#list
[Android General] porga:
Croatian=Hrvatski

Maybe ROM doesn't need to be hacked, maybe it can be added if Tablet is rooted?

So you say Foxtrot has "Hrvatski" in it? Can you confirm?
[Android General] NEO130:
Hrvatski is in foxtrot from. I don`t know that croatia is hrvatski. :fingers-crossed:
[Android General] InfernoChz:
Sorry i wasn't on all this time but i had some urgent tasks to do cause somebody from my family died.How to make out of nvram an img?

Should i make it an img with iso or is something totaly different ,and how to put the nvram.img into spft as i can only put in the program the scatter file.Im sorry again but i couldn't do it as my mind is clouded with what i need to do now for my family ,work ,i cant to figure it out ,sorry again .
[Android General] porga:
OK, can someone give me exact instructions for flash procedure?

Also, please give me exact instruction how to flash bask ROM whisch was extracted from device using this procedure:

http://xdaforums.com/showpost.php?p=46544197&postcount=41

I will try with Foxtrot, but I would like to have possibility to flash old one in case something goes wrong.

Does Foxtrot works with two SIM model?
[Android General] syserr:
I will work up instructions on my FAQ from pieces that I've already scattered... it's long overdue.

Definitely you want the ability to back out. In the past, not enough people worried about backing out.

I believe all the -H ROMs that makbro collected were meant for the Dual SIM model.
[Android General] syserr:
Hold off on doing anything drastic with your tablet.

To my disbelief, it has a PMT block (and equivalent scatter file) that is exactly like the A2107A-F. I'm not able to run it on my -H yet, although I know it works on your -H. In sort it has an additional "FAC" partition which has frustrated me quite a bit on my -F.

Update:

I'm still not sure why a complete write of your contiguous ROM won't work for me. But at least doing the "download" works... so you could proceed with caution.
[Android General] syserr:
http://xdaforums.com/showpost.php?p=37404137&postcount=6

May help people with MEID problems. Similar to what I have been saying.
[Android General] toncheee:
porga,

1. root your device

2. backup /data/nvram folder (if you don't do that you will lose your IMEI's after flash)

3. you have to install CWM recovery version 5.5.0.4 (not 6.0.1.5, because makbros ROM's are for 5.5.0.4. version of recovery)

4. make full backup with CWM so you can revert to what you allready have

after that put Foxtrot rom on sd card and flash it through CWM.

detailed instructions you can find here in this thread.

Good luck!
[Android General] syserr:
In your #3, I believe backups made with CWM5 won't work in CWM6. But I think ROM installs are fine in both - at least in all my experience.

Edit;

For people following this thread, I posted instructions for portga here:

http://xdaforums.com/showpost.php?p=46694891&postcount=69

---------- Post added at 10:13 AM ---------- Previous post was at 09:54 AM ----------

I desperately want a SPFT ROM Dump of a Vodafone Lenovo Smart Tab II.

Does anyone out there have a stock Vodafone Smart Tab II?
[Android General] bakuLaw:
automatic brightness bug

im using Lewa ROM,

A2107A-H,

when automatic brightness is enabled and when the unit locks,

it can't be re unlock again by the lock button/power switch,

you have to press the reset button to start again.

but if the setting is set to manual,

there is no problem,

any fix on these bugs?

or anybody experience this also?..
[Android General] syserr:
I think I forgot to reply to you.

".img" or ".bin" would just be a binary blob of data in this case, nothing like a CD iso or anything. There are two ways to make a backup of nvram. You can take a snapshot of the NVRAM block by reading the flash directly -- this is just a chunk of data. Or, you can backup a different copy of NVRAM that is on the filesystem at /data/nvram and this usually becomes a .tar or .zip.

I can't remember if you have original backups, but if you do.... look for nvram.tar or nvram.img.

Update/EDIT:

Also you could try this in an adb shell or terminal shell:

su

echo 'AT +EGMR=1,7,"IMEI_1"'> /dev/pttycmd1

(where IMEI_1 is replaced with your IMEI)

http://chinagizmos.blogspot.com/2012/10/imei-problems-backup-restore-no-service.html
[Android General] masood-ma:
dear makbro

I chose the wrong option when the tablet format

File was lit by UNBRICK tablet

Usb cable to charge the battery when the tablet is shown

Power button and volume to keep the cwm zip file that I choose restart only after Lnva logo is displayed on the screen

And does not have any place else

I tried all the files that were legendary, but nothing

Please help me

I put this link to download the file but I can not open http://xdaforums.com/show...&postcount=868

.001 And .002 file extension when renaming the zip file is not opening error game

Please help
[Android General] syserr:
Hello masood-ma,

makbro has not logged on to xda for a few months and said good-bye to us in a post -- has other things in his life to tend to.

Which model did you have? -F? -H? Single SIM or Dual SIM?

What are you trying to accomplish? Foxtrot ROM works well on dual SIM.

There is no way to brick this tablet.... you are in luck. But you do need some technical-know-how.
[Android General] syserr:
I'm going to try adjusting the sizes of partitions this weekend. Mostly as an exercise so I can fix people's problems, as these things all over the world are partitioned differently it seems. I think I know what I'm doing now. The short of it is modifying MBR, EBR1, EBR2. Then you have to resize images that are going on if they are static size or pushed on with SPFT. Of course if you are installing a ROM with CWM the SYSTEM (/system) is created at install time, so it will be the proper size of the partition automatically.
[Android General] kinta44:
That will be great! I've been trying to use some app to resize but it's no working. I'm waiting and big thanks in advance.

One question. I want to use ROM which I have now, will I be able?

Wysłane z: / Sent from: ZTE v970 przy użyciu: / using: Tapatalk, Swype, Aero2
[Android General] syserr:
You'll be able to install any CWM-style ROM, but it will definitely take repartitioning with SPFT first. I'll look at the sizes you mentioned again.
[Android General] masood-ma:
Not coming up after unbrick

Hi my tablet 2 SIM and 16GB-H
[Android General] syserr:
It appears like you've been using SP Flash Tool. If so, this might be easy.

The most basic -H SPFT ROM is ClearSky.

https://drive.google.com/file/d/0B8PcIZoLeGNuemZfMkpmeXpxS1U

It will usually get you back to a working system.

The notes from this video might be helpful:

http://www.youtube.com/watch?v=9V7m9UCM4-c
[Android General] kinta44:
The best solutions will be backup my Rom with CWM. Then repartition, and restore from backup... but I think it is impossible.

Maybe advanced restore? Only system?

Wysłane z: / Send from: Lenovo IdeaTab A2107A-H 3G (mod) przy użyciu: / using: Swype, Tapatalk, Aero2.
[Android General] pickled-onion:
I had the same problem, after wiping everything and installing correct zip I still get the same error, could you please tell me exactly what you did?
[Android General] syserr:
One thing that we need to understand right off. IMEI is stored in nvram. MTK implements this as TWO synchronized physical storage locations. The synchronization isn't straight-forward and difficult to manage if you are doing the things we are doing on this site.

Location #1 ----> /data/nvram

Your calibration data is stored on the USERDATA filesystem. The information is stored in files in this directory tree. These are easy to manipulate. This is what MKDRT does.

Location #2 -----> NVRAM block

This is a raw block on the flash/emmc memory that seems to always be 3MB long and at a starting address of 0xA60000. This is harder to get at.

I suspect the synchronization flow is influenced by /data/nvram/BackupFlag and /data/nvram/RestoreFlag. Also, I believe each ROM can affect it differently.

This is why it's SOOO hard to fix IMEI and NVRAM issues. If you Wipe Data / Cache you wipe location #1. If you do an SPFT Format you wipe location #2.
[Android General] pickled-onion:
I'm not sure I understand, how do I get my tablet to boot normally?
[Android General] pickled-onion:
Sorry, I quoted the wrong bit. I'm getting the same error he got - my tablet boots to a screen that says "press and set the country code!" and gives me a few options to press, but whatever I press i get a "TIMEOUT FAILED" error message and the tablet reboots to the same screen.
[Android General] syserr:
Ahhh... OK. A much different story.

I know that screen and I've had that problem too. The boot loader on all (that I know of) -F models and some (at least one that I know of) -H has a partition called FAC. This is short for FACtory and seems to only be on Lenovo. It's what MTK says is a custom partition. It uses your choice of country to customize your rom/firmware a little before even asking what language and time zone.

The short of it, it's on partition #6 and Android is on partition #7. But most -H models don't have this partition and android is on partition #6 in that case. Normally it appears that the bootloader jumps to that partition for the pre configuration I mentioned, and then goes to Android. For all this to work right, the bootloader, FAC, and Android have to be right and be in the right partitions.

What did you do to get in this state?
[Android General] pickled-onion:
I'm fairly sure the last time it booted normally was when I flashed CWM (which I can get into fine). I've also tried to flash one of makbro's .zip files, and also the modpermergency files that are flashed through backup and recovery.