yashsingh1/xdaforums huggingface dataset:
[Lenovo A3500 Questions & Answers] mr.koloss:
A3500F, FL - Mediatek MT8121

A3500H, HV - Mediatek MT8382

MT8382 has a 3G module, MT8121 doesn't.

There is Italian language in the ROM.

Yes I did flash it on my A3500FL 8Gb and everything working fine.
[Lenovo A3500 Questions & Answers] androidandroid2:
Can I restore a Nandroid backup from another tablet? Would it work?
[Lenovo A3500 Questions & Answers] mr.koloss:
You can restore your device from another nandroid backup, but make sure that you only restore system and data.

If you restore nvram partition from different tablet you will lose your wi-fi mac and other sensitive info about your device.

And don't forget to wipe cache and dalvik cache after restoration process.
[Lenovo A3500 Questions & Answers] androidandroid2:
I don't know how that could happen but yesterday I turned the tablet on (without doing anything) and it showed me the screen of the configuration wizard. Now it seems that everything works! Thanks to who offered to help me!
[Lenovo A3500 Questions & Answers] vanessaem:
Ok thread cleaned.

Please stay on topic, watch the language, and try to be respectful of one another.
[Lenovo A3500 Questions & Answers] androidandroid2:
I want to change the size of the navigation bar. Does Xposed + GravityBox work on Lenovo A7-40 ?

Edit: I tried it and it seems to work well.
[Lenovo A3500 Questions & Answers] bastel20:
hello,

for me, unfortunately the same.

it is determined !? on non-existent or incorrect drivers

A3500-FL

Android 4.4.2

Kernel version 4.3.67

Build Number A3500FL_A442_01_27_141127_DE

In the Device Manager is:

[Android Phone]

Android ADB Interface

and under Portable Devices

[A3500-FL]

But nothing with MTKxxxx usb vcom driver?

Can someone help me please? I want to get cwm recovery installed on the tablet.

Everything is so far failed :(
[Lenovo A3500 Questions & Answers] leripe:
Did you install the unsigned drivers from the first post?

Also I haven't tested this guide on the current latest kitkat update, which you have.

You might also need newer supersu and newer flashtool.

You also might need to unistall your current adb driver and the driver which recognises the device as a3500-fl.
[Lenovo A3500 Questions & Answers] bastel20:
hello,

Thanks for the answer.

I uninstalled all the adb driver and the driver Which recognises the device as A3500-fl.

But when I connect the tablet to the usb, then the pc the standard "Lenovo A3500-FL" tries each time to install drivers. When I try manually in the driver to change it from your package, then I always get a yellow exclamation mark and a device error no. 10th

How do I install the correct - unsigned - driver right?

I'm not a PC beginners ... :D
[Lenovo A3500 Questions & Answers] leripe:
There are guides in the first post on how to install the unsigned drivers to pc, for both win7 and win8(.1).
[Lenovo A3500 Questions & Answers] bastel20:
wow, I did it.

Thanks for the offense.

I have removed all drivers.

then I have the driver signing disabled. restart.

I got the driver from the archive (A7_40_driver.zip) all! installed manually.

Then I started the SP_Flash_Tool_v3.1336.0.198 and the scatter file is loaded. Then the download starts and the tablet via usb connected to the PC. 0% to 100% and he was done.

The CWM starts with (+) + (-) + power button.

I frightened just because it starts with a graphical glitches, but that's normal. This makes it every time. It all works perfectly.

I had the CWM mount the external memory card (new). This was gone. It all works fine and I have full root access!

Perfect.

Thx
[Lenovo A3500 Questions & Answers] bastel20:
it runs so far, but something is wrong with the sd card / reader?

at reboot each time it is removed.

I have every time the map manually re-insert it to be recognized.

It is formatted with fat32 sd formatter.

Can hang with the flash together?

Or do you have another idea?
[Lenovo A3500 Questions & Answers] leripe:
Format it with the android system.

Then use this app https://play.google.com/store/apps/details?id=nextapp.sdfix&hl=en

And reboot when you have applied the fix with it.
[Lenovo A3500 Questions & Answers] microme:
After visiting this forum for month anonymous, I registered to give some hints for those who weren't able to get CWM and SU working on A3500-FL.

I spent hours to flash the new recovery and get root access without success. I still got stock recovery and abortion by flashing SU. Finally it worked by

changing incorrect COM port set by Win7 --> Driver MediaTek PreLoader USB VCOM Port. Flash Tool uses COM11, Win7 set it up to COM7; go to System/Device Manager/COM&LPT/Connection Settings*/Expand*/ and set it to the right COM; *I don't know if these terms fit to the english language of Win7, cause I'm from good old Germany :p

using newest SP Flash Tool (v5.1352.01) with scatter.txt and recovery from above v3.1336.0.198.

Hope this will help you guys who had the same trouble like me.
[Lenovo A3500 Questions & Answers] bastel20:
[MENTION=4551463]leripe[/MENTION]

hello,

thank you for your effort.

It was the new Sandisk memory card. The old card is working properly.

It has nothing to do with the recovery.

Another question.

The Lenovo splash screen is just a graphic errors when going into CWM. Is this ok? Is that you, too?

Is not bad. Recovery and Android now work correctly.

Have Thanks
[Lenovo A3500 Questions & Answers] leripe:
Haven't booted to recovery for awhile, but when doing basic reboot the lenovo logo thingy looks normal.
[Lenovo A3500 Questions & Answers] bastel20:
hello,

yes the standard lenovo screen looks when booting from normal.

Just when I start to CWM is the Lenovo screen at the bottom of a little distorted. Then, the image changes to the CWM. Here the picture is perfect. Everything works.

I am very pleased. Thank you for your help.

Do you already have a good custom rom found for the A3500-FL?

In my past, I wat HTC very satisfied with the Leedroid off Rome.

In the Russian forum I found a lollipop rom for the IdeaTab A7-50 ...
[Lenovo A3500 Questions & Answers] leripe:
Well the recovery isn't even for our device and the recovery is usually the first thing that any device gets when it gets some developers working for it.

But yeah, no roms for this device, not even modified stock rom.
[Lenovo A3500 Questions & Answers] bastel20:
Something else:

The unit works great. The root was truly worth it.

A small problem has yet opened.

The audio profile: If I put on silent or vibration the tab ... after a reboot, the profile is always changed to "general". I suspect there is any app that is causing.

After restarting the negated horn appears briefly at the top right ... then load programs ... and hey presto the negated horn is gone and the profile of "general" is enabled.

A schedule software I do not think I installed; also no profile Changer or so.

Does anyone have ne idea what this is? normally this is not, right?

is there ne patch or something similar?

#Thx
[Lenovo A3500 Questions & Answers] NeBouse:
Just FIY, TWRP is available and fully functional on A7-40 3500-FL

(your device must be rooted first...)

You can grab it here (it's for A7-50 but it works on A7-40 too) :

http://lenovo-forums.ru/topic/9468-lenovo-a7-a3500-recovery-twrp-и-root/

(click on the link where it says : update_TWRP_281_A7-50.zip )

Unzip it and get the recovery.img

Install flashify on your tablet (free on the playstore).

Flash the recovery.img with flashify and voilà !!

Combined with this theme, it's really neat :

http://xdaforums.com/android/themes/theme-twrp-materialised-dark-light-play-t2915584

(get the 2.8.1.x V2 theme for 1280x800 resolution, rename to ui.zip, and place it in TWRP/theme on your internal storage)

Enjoy full touch recovery !! (tested backup and restore, and flash, everything is ok)
[Lenovo A3500 Questions & Answers] boulete:
Thank you this is a good news! (merci à toi de faire remonter l'info).

Do you try to install latest OTA (O27) update manually with TWRP?

It's failed with CWM...

Best regards
[Lenovo A3500 Questions & Answers] NeBouse:
You're welcome ;)

Nope i didn't try to install OTA with TWRP.

My tablet is 1 week old, it came preinstalled with 4.4.2

I did the 027 OTA but it was prior to root it and install CWM.

Regards.
[Lenovo A3500 Questions & Answers] Balthasar85:
I want to buy lenovo "LENOVO A70-40 59410286" but I do not understand that the root works. I'm not sure that the name of the tablet is correct.

The specs are:

MediaTek MT8121 Quad-Core 1.3 GHz

PowerVR SGX544

1Gb RAM

IPS 7" - 1280x800

anyone knows this tablet?

Regards.
[Lenovo A3500 Questions & Answers] leripe:
Yeah, it's same device or at least those stats are the same.

Manufacturer's code: 59410275

EAN-code: 888440626574
[Lenovo A3500 Questions & Answers] ilsup:
Hi all!

I tried to root my lenovo a7-40 without success :(

I have the same device of bastel20 and windows 7 on laptop mini 311c

A3500-FL

Android 4.4.2

Kernel version 4.3.67

Build Number A3500FL_A442_01_27_141127_DE

I could not put CWM into my device but then I followed this procedure :

1. turn on a7-40

2. connected via USB to my laptop ; windows 7 immediately install the driver

3. uninstall this driver (Control Panel > Device Manager . . .) ;

4. I have the driver signing disabled (as administrator)

5. turn off a7-40 (It is still connected by USB) (IMP!) unplug USB from laptop

6. restart laptop

7. I got the driver from the archive (A7_40_driver.zip) all and installed manually; for all of them appear a yellow icon (Error 10), but this is not a problem.

At this point (IMP!) I changed an incorrect COM port set by Win7 for Driver MediaTek PreLoader USB VCOM Port. Flash to value COM11 (Win7 set it up to another COM? value).

Then same procedure from first post.

(IMP!) After pushing on Download button in SP_Flash_Tool_v3.1336.0.198 I plugged my a7-40 by USB cable to the laptop and that's all!

CWM installed!

[MENTION=4551463]leripe[/MENTION], [MENTION=3091236]bastel20[/MENTION], [MENTION=6289331]microme[/MENTION]

Thanks a lot guys!!
[Lenovo A3500 Questions & Answers] Nolatar:
Work perfect on my A3500-FL updated to A3500FL_A442_01_27_141127_DE build. thank you very much.
[Lenovo A3500 Questions & Answers] Balthasar85:
I can not do that, can you help me? :eek:
[Lenovo A3500 Questions & Answers] ilsup:
For point 4. in my guide please have a look at below text from post #1

"If the above doesn't work, you might also need the drivers installed, download the a7_40_drivers.zip attachment. Check method below on how to install unsigned drivers.

To install unsigned/uncertified drivers on Windows 7: see post #1 for the link!

To install unsigned/uncertified drivers on Windows 8: see post #1 for the link!

After you have disabled the driver signature verification, you can install the drivers like this: Right click My computer, Manage, Device Manager, right click your computer at the top, Add Legacy hardware, next, Install plapla manually, next, Show all Devices, Have a Disk.., Browse to the driver folder where you unzip them, choose example windows7 and the 64 version (win7 drivers work for win8.x too), install every device. Then follow the guide."

:fingers-crossed:
[Lenovo A3500 Questions & Answers] Balthasar85:
Perfect!! :victory:
[Lenovo A3500 Questions & Answers] tifao:
Upgrade to 4.4.2 from 4.2.2 impossible...

Hello everyone.

I succesfully rooted my A7-40 (A3500FL) using this guide (Thanks to the authors !)

But now that i want to upgrade to 4.4.2 from OTA, it seems it's impossible, i always have an error...

I first had signature verification problems & now it seems i'm not allowed to upgrade my tablet with the update.zip, it looks like CWM RECOVERY detect my tablet as a "3500H" & not a "3500FL"

:confused:

Can you please help ?
[Lenovo A3500 Questions & Answers] leripe:
People have asked the same thing here already, no solution yet. You would need stock recovery for the update, but it's not available from anywhere.
[Lenovo A3500 Questions & Answers] maswali:
[SOLVED] Little changes in the order finallay did it!

Hey,

first of all: Thanks a lot for this instruction! I finally rooted the Lenovo tablet successfully!

BUT I would suggest some changes in the order of installation steps... at least it worked with my Tablet in the End. And I really tried and failed for hours!

Finally I did the steps like this:

1. Download attachment recovery.zip.

2. Manually install the Drivers for the LenovoTablet before plugin.

Otherwise Windows only installs the normal automatic drivers and its more difficult to install the other drivers.

2.1. Plug your device to PC.

3. Download the latest supersu zip file, which is now 2.45: http://download.chainfire.eu/695/SuperSU/UPDATE-SuperSU-v2.45.zip

3.1. Move the zip.-file to the Sdcard.

4. Turn off your device.

5. Unpack Recovery.zip

6. Run Flash_tool.exe with Admin Rights

7. Chose Scatter-Loading and choose MT6582_Android_scatter.txt (in Recovery folder)

7.1. Now you will see checekd only one checkbox - recovery, if not click on it and choose recovery.img

7.2.. Press Download

7.3. Connect your device

7.4. Wait few seconds.

8. Have CWM on your device :)

9. Unplug your device.

10. . Boot to cmw recovery by turning off your device. Then press and hold VOL DOWN + VOL UP and then also press and hold POWER for about 7 seconds.

10.1. Choose " Install zip from sdcard." (To confrim always use the Power Button)

10.2. Choose "zip from sdcard".

10.3. Select SuperSU-v2.45.zip from sdcard and apply.

10.4. Have a rooted tablet :)

I found out that it was necessary (at least with my device) to always flash the CWM with the Flashtool directly before you startup the device. Otherwise it will start the original AndroidRecovery again.

And maybe its good to activate USB-Debugging. At least I did.

Good Luck!
[Lenovo A3500 Questions & Answers] leripe:
Added link to your post to the first post. I would guess your guide is more up to date.
[Lenovo A3500 Questions & Answers] capslo:
I have problem when doing step 5 and 6 . I installed all drivers. What i must do now ?

screen http: //bitly.pl/734398 - remove spacebar

SOLVED

I must download other drivers

h ttp://thebroodle.com/android/install-mediatek-mt65xx-usb-vcom-drivers-windows-8-8-1/
[Lenovo A3500 Questions & Answers] leripe:
Updated to first post. It now has the fixed guide from [MENTION=6381725]maswali[/MENTION] and link for the latest SP Flash Tool download (the file is too large to upload here). Also added other drivers which seemed to work for at least [MENTION=6438894]capslo[/MENTION]
[Lenovo A3500 Questions & Answers] tenuis:
Hi, I have to remove CWM on my A7-40, and I'm absolutely lost. I have to send back my tablet and with CWM on it there could really be a problem :(

Any help ?

Thank you very much !
[Lenovo A3500 Questions & Answers] leripe:
There's no official firmware or recovery available, so you currently you can't undo rooting/cwm.

Edit:

The first post kind of mentioned this already, but added one more sentence to clarify it better. The same note also below:

SIDE-NOTE: IF YOU USE THIS GUIDE TO ROOT YOUR PHONE, YOU WILL LOSE THE ABILITY TO UPDATE YOUR PHONE FROM OTA UPDATES! AFTER ROOTING YOU CAN NOT GO BACK TO STOCK! (no workaround as of yet 17.03.2015)
[Lenovo A3500 Questions & Answers] tenuis:
Holy s*** !

I have managed to download a complete firmware (correct version), although not DE but ROW from a russian website, could I use it to do the trick ?

I have the recovery.img and the MT6582_Android_scatter.txt (and the rest, but I guess it could be it no ?)

EDIT : success ! I have used recovery.img from my A3500FL_A442_01_27_141127_ROW firmware, everything is perfectly fine. I'm happy, I can send back my tablet without fear.
[Lenovo A3500 Questions & Answers] leripe:
Will link your post to the first post, but if they look closely they will notice the wrong firmware.
[Lenovo A3500 Questions & Answers] tenuis:
Are you sure ? I have checked in tablet informations (in settings), and the firmware version is the right one ("DE" at the end). In recovery mode, no trace of russian language or wrong firmware number, so maybe deeply hidden in recovery.img is the firmware version mentionned ?

Also, I could upload the recovery.img file, if it could be useful to someone, but don't know if I can post it here ?
[Lenovo A3500 Questions & Answers] leripe:
Oh, I read wrong/understood wrong in haste. So you extracted the recovery.img from the firmware and flashed it?

Can you write a few step guide for the procedure for us others? :)

Edit:

Found the firmware file by googling: A3500FL_A442_01_27_141127_ROW
[Lenovo A3500 Questions & Answers] tenuis:
Yes, I have extracted recovery.img only, and followed exactly the same steps as the first post guide to replace the one on the tablet.

So, it's pretty simple, you take the recovery.zip from the first post, extract it, and replace recovery.img in the recovery folder by the stock one.

Then :

And that's it !

On a side note, if it seems stuck on a black screen with a loading circle after factory reset, you have to put the tablet in landscape mode and restart (the shutdown menu appears without any problem) - this issue doesn't seem related to recovery, but a bug within lenovo firmware and the first configuration screen.

EDIT : I have attached the stock recovery.img, if it's a problem, I'll remove it of course.
[Lenovo A3500 Questions & Answers] leripe:
Thanks, tested the guide and it works just fine. Updating my android to the latest OTA now.

Edit: Success, flashing cwm back.
[Lenovo A3500 Questions & Answers] cocous:
Hi all

One question please?

Where can i found stock firmwares kitkat and jelly Beam for Lenovo TAB A7-40 A3500-FL?
[Lenovo A3500 Questions & Answers] leripe:
Nowhere. Or maybe from lenovo russian forums, but wouldn't count on it.
[Lenovo A3500 Questions & Answers] cocous:
I can't there. It's very difficult to understand the language. :)
[Lenovo A3500 Questions & Answers] leripe:
Download google chrome browser and use google translate option to translate pages. ;)
[Lenovo A3500 Questions & Answers] cocous:
Thanks i try it.
[Lenovo A3500 Questions & Answers] Grobie13:
Bricked Device

Hello everybody,

I think I bricked my doughters device :(

She forgot her pin and I factory reseted her tablet.

First I made a backup in recovery. After resetting I tried to root the device.

After setting up the tab I booted into cwm to flash supersu, but there was

original recovery again, not cwm... I switched off the tab and hold down some

keys, maybe the wrong combination, and restart.

I landed in something looked like the bootloader, but language was chinese.

From there I tried to reboot again, but the device stays off. That´s the situation

till now :(

I hope someone can help.
[Lenovo A3500 Questions & Answers] cocous:
Look here to hard reset

https://youtu.be/ro6gmiCJvWw
[Lenovo A3500 Questions & Answers] Grobie13:
Thank you for your answer, but I can't start the tab anymore...
[Lenovo A3500 Questions & Answers] leripe:
So no power? And charging it doesn't help? Have you tried pluggin it to pc?
[Lenovo A3500 Questions & Answers] Grobie13:
When the tab turned off, battery was around 30%. This morning, German time, I tried again every possible combination of buttons. Hours later I plugged in the charger and the screen awoke. I can't explain, may be the battery stats where wrong. But I tried the charger yesterday and nothing happens. What so ever, everything is fine again, my daughter is happy again. Thanks for your answers.
[Lenovo A3500 Questions & Answers] walterego221:
New firmware version!

"Lenovo_A3500-FL_A442_01_S027_TO_Lenovo_A3500-FL_A442_01_S029"

the root works with this firmware?

I have this update from 2 weeks.

thanks a lot :fingers-crossed:
[Lenovo A3500 Questions & Answers] leripe:
It should work with all firmwares of Android 4.4.x
[Lenovo A3500 Questions & Answers] walterego221:
download, restart the tablet, error! :(

Screenshot -> oi60.tinypic.com/24m7w3n.jpg

the update is not installed, any ideas?
[Lenovo A3500 Questions & Answers] leripe:
You mean to update to the next OTA update and you have already rooted the device?

Then follow this guide: http://xdaforums.com/showpost.php?p=59513310&postcount=105

Everything that is needed is on the first post.
[Lenovo A3500 Questions & Answers] conduisant:
i've the same problem, my tab a3500fl seem bricked with no CWM...i try to flash CMW with the thread tutorial but flashtool dont see the tab :

- lenovo tab is still recognise as MTP device under windows, i install manually all the mtk drivers but when i plug the tab, windows installs automaticly MTP drivers (i think usb debugging on the tab is OFF)

someone can help me ?
[Lenovo A3500 Questions & Answers] leripe:
After it installs the drivers got management and unistall those drivers which it installs automatically. And after that, install those unsigned ones.
[Lenovo A3500 Questions & Answers] conduisant:
hello

i want to to a factory reset : i've got root + custom recovery installed on my lenovo a3500fl...

before select factory reset under android, do i flash the stock recovery before ?

is there someting else to do?

thanks
[Lenovo A3500 Questions & Answers] leripe:
Yes flash the stock recovery back if you want to remove root and custom recovery.
[Lenovo A3500 Questions & Answers] kotsosre:
What roms are compatible with this device?
[Lenovo A3500 Questions & Answers] leripe:
There are only stock rom as far as I know, although haven't checked lenovo russian forums in awhile.
[Lenovo A3500 Questions & Answers] walterego221:
I want to upgrade to Lenovo_A3500-FL_A442_01_S027_TO_Lenovo_A3500-FL_A442_01_S029 this tablet but I can not because I have the root.

How I can remove the root to update?

A question: when the battery is at 10% a service does not work anymore. it's normal?
[Lenovo A3500 Questions & Answers] leripe:
1. Read the second post.

2. What service doesn't work?
[Lenovo A3500 Questions & Answers] BChris71:
Hi, first of all, thank you for this guide.

I installed cwm and rooted my tablet months ago but now, I want to sell it so I try to flash the stock recovery using the guide of your second post but there is no scatter file in the archive of the stock recovery. If I use the scatter file from the CWM archive, I have a error message "PMT different from the ROM, it must be downloaded".

Can you help me please ?

Infos :

Android version : 4.4.2

Build version : A3500FL_A442_01_29_150326_DE
[Lenovo A3500 Questions & Answers] leripe:
Uploaded scatter file to the first post from this: http://lenovo-forums.ru/files/file/728-lenovo-a7-50-прошивка-a3500-fl-a3500fl-a442-01-27-141127-row/
[Lenovo A3500 Questions & Answers] BChris71:
Thank you but I don't understand, is this for A7-40 or A7-50 ? both are Lenovo A3500-FL ? Won't I brick my tablet if I use the scatter file you uploaded ?
[Lenovo A3500 Questions & Answers] leripe:
There has been some miss naming on this tablet on some vendors. I bought mine as A7-50 Lite, which just is the a7-40 if i have understood right or at least the vendor now sells it as a7-40 lite.. Anyhow Lenovo A3500-FL is the right model.

Edit: To be sure of what model you have, just check from the tablet settings about page.
[Lenovo A3500 Questions & Answers] BChris71:
Thank you, It worked ! I'm now fully stock. Maybe you can add the scatter file to your stock_recovery.rar archive, it will help people :).
[Lenovo A3500 Questions & Answers] storn206:
With my Lenovo I couldn't get recovery installed. I followed the instructions, but after rebooting it was always the android recovery that showed up.

But I found a different solution. Kingroot worked fine and its very easy, since it's just a app.

Since I am newly registered I can't post a link but google will help you ;)

My Tablet:

Model number Lenovo A3500-FL

Android version 4.4.2

Kernel version 3.4.67

Build number A3500FL_A442_01_29_150326_DE
[Lenovo A3500 Questions & Answers] walterego221:
sorry, but there is this tablet for a lollipop rom?

I have not found any rom for this tablet and no discussion, there are none?
[Lenovo A3500 Questions & Answers] leripe:
I highly doubt that there will be an lollipop update rom lenovo and I also highly doubt that anyone will provide custom roms for this.

Best place to search for stuff is the russian lenovo forums, with google translate.