yashsingh1/xdaforums huggingface dataset:
[Lenovo A3500 Guides, News, & Discussion] Sam Nakamura:
RAM management is definitely nothing to worry on 6.0.1, it's lag free for the most part, only minor delays sometimes, considering the age and hardware of this tablet it's pretty amazing, I tried Cyanogenmod13 and RR 5.7.4, both are definitely daily driver material, with Cyanogenmod13 even a little bit better as Bluetooth worked out of the box for me, on RR I had to play a little bit with the build.prop before I got it working.. So yeah, they are stable as much as I can tell and for my usage pattern, browsing with chrome, youtube, and every day stuff, never tried gaming though... Definitely worth a try, in my opinion, just backup all partition of your current setup and try yourself, this way you can revert anytime you feel like...

Edit: and no, Nova Launcher Prime isn't included, just the standard stock launcher... The rom size is fine, remember you need to separately have to flash Google Apps (gapps), in case you like to use them and have a Playstore available (opengapps.org, arm, android 6, pico)
[Lenovo A3500 Guides, News, & Discussion] jimmy19742:
One additional question:

Are these ROMS compatible with LENOVO A3500-H?:)

---------- Post added at 06:39 AM ---------- Previous post was at 06:20 AM ----------

I forgot to tell You that I speak Russian!

Since I currently use Kinguser SU should I first replace it with SUPER SU by CHAINFIRE?

Don't forget that I'm a newbie.Well not completely but definitely not a developer!:)
[Lenovo A3500 Guides, News, & Discussion] Sam Nakamura:
Yeah, as written above, it's working for the whole Lenovo a7 40 a3500-(F/FL/H/HV) family, as I personally only have the Wi-Fi variant I cannot tell much about telephone service being reliable but it's definitely integrated into the rom and is supposed to work fine... Maybe you can give feedback in case you try it
[Lenovo A3500 Guides, News, & Discussion] Sam Nakamura:
You speak Russian? Interesting... :good:

No need to replace your superuser, as long as you're able to gain root privileges it should be easy to use flashy or rashr from Playstore to flash TWRP...

Once TWRP is up and running backup everything and then wipe everything except internal storage, now flash rom, gapps, and the audio fix from my previous post (otherwise the sound output will be incredibly loud), the rom is prerooted (Settings, about phone, tap 7 times build number to unlock "developer options", go to settings, developer options, and enable root) if you prefer supersu you'll have to force the installation to system (not systemless) otherwise it won't boot up...

Do it like this, before flashing supersu zip go to twrp, advanced, terminal emulator and type

echo SYSTEMLESS=false>> /data/.supersu

this will create no output in terminal emulator but after this flashing of supersu will be successful...
[Lenovo A3500 Guides, News, & Discussion] jimmy19742:
Internal storage should not be wiped?

Is that correct?

I used to wipe internal storage on my LG Optimus 2x!

Also I created second ext4 partition on my SD card to link Dex.files, library folders,etc

And though my internal storage is with 2GB free space now

when downloading from Google play I got the message "Insufficient storage"

I have given it to a mobile service shop and I still haven't inspected what their technicians have done!

Anyway, Thank You so much!:)
[Lenovo A3500 Guides, News, & Discussion] Sam Nakamura:
OK, I don't really have a idea about changing partitions on internal storage, mine is partitioned as it was from factory, what I meant to say is that it's not necessary / mandatory to wipe internal storage, it's up to your preferences, exept it would probably make sense in your case as 2GB storage left is just not enough, if you can backup your files from internal storage it's probably good to wipe it to, especially with this specific partitioning as you won't need it for the new setup...
[Lenovo A3500 Guides, News, & Discussion] jimmy19742:
Just tried to flash TWRP for A3500 via Rashr and got the message"The recovery size of 5 MB is more than your recovery partition which is 0MB!

Should I try to edit the recovery.cf file?

That's important!

Thank You in advance!:(
[Lenovo A3500 Guides, News, & Discussion] Sam Nakamura:
Try flashify first, another option also is flashfire but I'd recommend flashify as this worked for me, never had this issue or error output...
[Lenovo A3500 Guides, News, & Discussion] jimmy19742:
Worked just excellent:svetius:

Arigato!

Thank You!

Just checked the Russian forum: to go in a recovery mode ,all three buttons should be pressed!

Once again thank You so much!::victory:
[Lenovo A3500 Guides, News, & Discussion] jimmy19742:
Hello,Sir! Just flashed the RR package but not from TWRP butt from Flashify and it said it could not find MD5 !

Now I'm stuck on start up screen unable to get into recovery!

What am supposed to do?

To wait to full discharge of battery and 15 minutes more?

Or what?

Please,help!:(

Backed up all partitions successfully!
[Lenovo A3500 Guides, News, & Discussion] jimmy19742:
Help!Bootlooo!

Partition back up done right but flashed the RR zip via Flashify and it said it could not find MD5!

Now I'm stuck on start up screen unable to get into recovery!:crying:
[Lenovo A3500 Guides, News, & Discussion] Sam Nakamura:
That's not to cleaver when twrp is available and does it flawlessly :) not a big issue, there is a little pin hole next to the SIM slot, press it with a a little paperclip or similar, this forces the device to reboot, then button combo right after it and "voila", you're supposed to be back in TWRP.... Good luck
[Lenovo A3500 Guides, News, & Discussion] jimmy19742:
Yup,I was exhausted AF. And acted like a dummy.I know about the hole.i have tried it with a needle but nothing ever happens..THATS WHY I HATE IT.I had also A3000H.It has a button for reset!

If this doesn't work I'll leave it to fully discharge and after plugin the charger ,will use the combo?

is there any other solutions?

Thank You In Advance!:)
[Lenovo A3500 Guides, News, & Discussion] Sam Nakamura:
Yeah, we're all here to make mistakes, don't worry too much, things like this happen...

I had it too that it wouldn't respond and only rebooted after several attempts, I'd keep trying also pressing the power button for 10 to 15 seconds could work, last option is to let it drain over night... It's annoying but actually should be just a matter of time :)

___________________

Edit:

Yeah, the roms do not provide a md5 checksum, so you should always check settings TWRP / Flashify to disable the md5 check, but even if you forgot it shouldn't hang up like that, bad luck I'd say...
[Lenovo A3500 Guides, News, & Discussion] jimmy19742:
Bisperas,Sam!

It went well but RR UI was not responding (thank God for my knowledge in Russian language)!

I switched to CM 13 but though it's not a nightly build, it's buggy! sent the bug/crash report to the webmaster of this site!

Sorry for not responding but had a lot of obligations!

Best regards!

Also bought 32GB SD card class 10- UHS -I.The previous was SDXC class 6

My main problem is the limited internal storage.

Should I make a second partition on my SD card or try to use it as an adoptable storage!

Thank You in Advance !:cowboy:

Have a smooth Monday!

P.S.Do You speak Japanese? Just curious!
[Lenovo A3500 Guides, News, & Discussion] Sam Nakamura:
I use the storage as it was from factory, one 8GB partition for internal and a 32GB external storage SD card and for me all is great, no freezes, no crashes, pretty smooth actually relativ to the aging hardware...

Recently lineageOS was added but I had no chance to try it yet, also I'm actually pretty happy with cm13...

Edit: unfortunately I don't speak Japanese, that would be totally awesome...
[Lenovo A3500 Guides, News, & Discussion] jimmy19742:
I partioned my SD card to fat 32, ext 4 and swap.

Runs smoothly now!

Best regards and thank You so much for Your help!

Without it ,I would be lost!

Downloading lineage OS!:victory:

---------- Post added at 12:38 AM ---------- Previous post was at 12:33 AM ----------

Just one problem in CM 13 : ANR so often but I can live with it!

Do You want to send You the bug report and bug.png?
[Lenovo A3500 Guides, News, & Discussion] Sam Nakamura:
ANR? :confused: what's this?

I guess bug reports are useless, there isn't any active development, for my usage pattern everything works flawlessly, it's comparable fast, video and music works, Bluetooth too, no crashes, nothing...

I'm pretty satisfied with it :good:
[Lenovo A3500 Guides, News, & Discussion] jimmy19742:
ANR=Application Not Responding.:)
[Lenovo A3500 Guides, News, & Discussion] jimmy19742:
Hi ,Sam!I did a factory reset and reinstalled CM 13 !It runs smoothly now!

Do you know which gapps should I use for Lineage OS or I should look up in the Russian forum?

I read that since CM is discontinued,Lineage OS is its heir and I think to switch to it some day!

Thank You in Advance!

Best regards!
[Lenovo A3500 Guides, News, & Discussion] Sam Nakamura:
Sure, I always use open gapps:

http://opengapps.org/

Just choose the correct package corresponding to the device architecture, for our beloved device its

ARM

ANDROID 6

-> best to use pico variant and download additional apps from store as bigger packages tend to create issues but don't worry for me the mentioned package worked always fine..

Edit: switched to lineageOS today and WOW it's absolutely fast... Absolutely recommended :)

Edit2: it's also no issue to dirty flash lineageOS on top of cm13 to keep all settings and data, usually its not recommended to avoid problems but being on cm13 and just finished my setup, installed and restored everything I didn't wanted to start all over again, so I wiped system, cache and dalvik to flash lineageOS and gapps and super su, all fine :) OS switched and all apps and settings survived... Security Patch is from March '17 by the way, newest I have seen so far... Except RR 5.8.4 has even September' 17 (ahead of my 3t on official RR) but it's still unstable... [MENTION=8543336]jimmy19742[/MENTION]
[Lenovo A3500 Guides, News, & Discussion] mihael zzzzz:
RR5.7.4
[Lenovo A3500 Guides, News, & Discussion] jimmy19742:
Hi Sam!

I want to do a clean flash because I still get the same bug report but when I was linking my applications to the SD card,I noticed that they all had no Dex files.They have odex but none of them has a dex file.Do you have any idea how it has happened so?

Btw I decided to buy Lenovo Tab 4 (8" , ARM 53 quad core Snapdragon,2GB RAM,HD display,4.180mAh,4G) this week.It costs $118 on Amazon.

Would love to hear Your opinion on Snapdragon!

Best regards!

Edit 1. Suddenly I lost root privileges and I downloaded Kinguser again.I don't why! it happened so.
[Lenovo A3500 Guides, News, & Discussion] Sam Nakamura:
Well, performance-wise it's expected to be much, much better than our old lenovo a3500, Snapdragon is good because they release sources for their chipsets in a timely manner (other than mediatek) and with this sources developers can build nice stuff like custom recoveries, kernels and ROMs...

As I saw on a quick search this device is pretty new, therfore getting a working TWRP, ROMs, etc. will take a while, haven't even looked for working rooting methods, unlockable bootloader, community support - that's the things I personally check out before buying anything, as having this possibilities is more important to me than the price alone...

I personally never used the link2sd solutions, lots of people have trouble with it and to me it wasn't necessary yet, I always was able to manage it somehow and the lenovo a3500 is a spare device only, just watching youtube and browsing with Chrome and this few things are working fine for me..
[Lenovo A3500 Guides, News, & Discussion] jimmy19742:
I'm done with Chrome. I use Puffin browser- it has a track pad and a mouse pointer!

Thank You once again!:victory:

Edit: Since You love YouTube, check AT player in Google Play. I've been in a constant touch with the developer for months who actually lives in FL.
[Lenovo A3500 Guides, News, & Discussion] Sam Nakamura:
I'm using the adfree and background playback enabled youtube version from (Google for iYTBP) ZaneZam which is more than satisfactory but I give your suggestion a go...

By the way, first nougat rom (RR 5.8.4) for a3500 devices is out and it's amazingly good, if there just wasn't the Bluetooth bug, as soon as a Bluetooth device is paired the media plays 4 times to fast, disconnect Bluetooth device and all is well - really strange.. But I guess you're enjoying your new device :)
[Lenovo A3500 Guides, News, & Discussion] Sam Nakamura:
Please:confused:
[Lenovo A3500 Guides, News, & Discussion] jimmy19742:
Hi,Sam!I decided to switch to lineageos and make a clean flash using Titanium backup and root to save the applications and their settings.But first I flashed SuperSU.zip and after that when I selected to boot in recovery,my beloved A3500H (which now is A3500HV) got stuck in a black screen! It just discharged and I'm bacj with CM 13 but yesterday I ordered Lenovo Tab 4 because of its Snapdragon 425! I would definitely use Nougat on this one!

Could You post either a link to the ROM or the thread?Thank You In Advance!

You say you ve been using YouTube Red? For $2 I bought a premium feature in AT player and enjoy its floating screen cause I love to multitask ( I use social media for business)!

LENOVO Tab 4 was out of stock!I difficulty found one local retailer where it was available.

I don't use Bluetooth but a10 yard RCA to 3.5mm jack cable.It connects the tablet to 35W amplifier.

Best regards!:)
[Lenovo A3500 Guides, News, & Discussion] Sam Nakamura:
Well then I'd should be just fine, i already posted a link - check this :) have a nice day!

https://xdaforums.com/android/development/guide-lenovo-a3500-h-t2879208/post73473559 and remember to use 7.x gapps for i9305...
[Lenovo A3500 Guides, News, & Discussion] Sam Nakamura:
Regarding Root Options:

Did you fallow my previous instructions regarding supersu? Somehow the installer script decides for a systemless installation which fails, you have to force it to install to system by using TWRP's terminal emulator with this line:

echo SYSTEMLESS=false>> /data/.supersu

Then flash supersu again and it should work, it did for me :)

Also new magisk (magisk 14.0 / magisk manager 5.3.0) works, it has a new option when installing you can use "patch boot image" (just get the current boot image before from the rom zip) now direct it to the stored boot image and let it patch, if done the boot image can be flashed in TWRP (install, image), install magisk manager 5.3.0 and done...
[Lenovo A3500 Guides, News, & Discussion] jimmy19742:
Thank You so much,Sam!I would definitely couldn't go through the whole process without Your help!

Just executed the string from the shell!but first #su

Have to check what magisk is! I'm bit worn our!Owe you a couple of ?!
[Lenovo A3500 Guides, News, & Discussion] Sam Nakamura:
No, you don't :) it's a pleasure for me to provide a little help :highfive:

Edit: yeah, magisk is a different story... Basically rooting with the possibility to apply different mods in module Form, reminds a little of xposed but is a different concept with different possibilities, I decided to use supersu too because it's absolutely reliable, magisk only works 90% flawless, titanium backup won't find root permissions when every other app does, little weird...
[Lenovo A3500 Guides, News, & Discussion] jimmy19742:
Got my new devise!Just one disadvantage: because it's 8" and with a metal back cover,t's heavy!

Now I'm drawing the battery to make two cycles of fully charging and fully discharging.

Will install RR on A3500HV in a couple of days!

This device runs Nougat-7.1.1!Not bad but it's $200 here!

Recommending!:cool:
[Lenovo A3500 Guides, News, & Discussion] Sam Nakamura:
Well, thanks for letting me know :highfive: there's nothing better than a new (digital) toy to play with... Nice :D
[Lenovo A3500 Guides, News, & Discussion] jimmy19742:
Hi ,Sam!Got the irony!

Please, accept my sincere apologies!:(
[Lenovo A3500 Guides, News, & Discussion] Sam Nakamura:
LOL :laugh: no, not at all... Just remembered the last time I unboxed a new device, that's just gorgeous!
[Lenovo A3500 Guides, News, & Discussion] mihael zzzzz:
How to Port mtk6582 roms for lenovo a3500

Sorry my bed english.

We need AndImgTool, notepad +, winrar or similar programs.

1. We unpack the firmware

2Pack the kernel with andimgtool

3 We change the folder portkernel to the stok folder kernel (if the firmware does not reach the boot animation in the ramdisk we change port uevented.rc to the stock uevented.rc

4 We pack boot.img (do not forget to rename new_boot.img in boot.img)

5 We are looking for the updater script and changing the lines with notepad +

format ("ext4", "EMMC", "/ dev / block / mmcblk0p5", "0", "/ system");

mount ("ext4", "EMMC", "/ dev / block / mmcblk0p5", "/ system",

mount ("ext4", "EMMC", "/ dev / block / mmcblk0p8", "/ data", "");

6If the firmware does not want to be installed (some symplinks falled) then we take updater binary and updater script from cyanogen mod13 from Kit-kat

7system-lib replace libmali.so from cyanogenmod 13 in port firmware

8system-lib-hw replace

hwcomposer.mt6582.so and graphlock6582 with replacement.

9Pack the firmware.

If the firmware hangs on the bootloop, then we drop the graphlock8xxx and hardwarecomposer 8xxx files into the system-lib-hw folder (these are in the official firmware 4.4.2)

Files for port rom take from cyanogenmod 13 from the cicadata.

To turn off the tablet when bootloop it is necessary to clamp the buttons power + keyplus + keyminus and press into the round hole for about 4 seconds (I use a needle).

This works when porting from the kernel 3.467 to 3.467

it can be ported from any mtk6582 device theoretically possible and with mtk6737,6735 just x32bit system except (sprout).

Do it at your own peril and risk.
[Lenovo A3500 Guides, News, & Discussion] mihael zzzzz:
How to Port roms7.1.2android from mtk6572 for lenovo a3500

1 unzip boot.img

2 Move stok to to boot.img (sometimes

stok uevenced.rc if the firmware does not start.

3Pack boot.img

4Change the updater script values

mount, format (look at cyanogenmod13) if you see an error in recovery (some symplinks falled), then move with the replacement updater script and update binary from cyanogenmod13.

4 Copy with the replacement libmali

5 (Very important) Copy grallock.default, gralloc.mt6582, hwcomposer.mtk6582,

Open gralloc6582 and hwcomposer6582 with notepad +.

Find all the values ​​of 6582 and replace them with 6572.

Then rename gralloc6582 and hwcomposer6582 to gralloc6572 and hwcomposer6572.

5 Copy to the lib-hw folder gralloc8xxx and hwcomposer8xxx (they can be found in the official firmware).

6Pack the firmware.

The author of the instruction does not bear responsibility for broken devices.
[Lenovo A3500 Guides, News, & Discussion] jimmy19742:
Hi Sam!

How many 12 hour charging cycles do you do when you buy a new device ?

Some say 3 , but I usually do 2!

Best regards!
[Lenovo A3500 Guides, News, & Discussion] Sam Nakamura:
LOL :laugh: non as all devices nowadays usually use Lithium-Ion or Lithium-Polymer based batteries where no memory effects can be observed - the practice you do was true for the 1st generation accumulators (NiCd - Accumulators) but with the modern ones the only real danger is to regularly drain the battery completely to zero or to not use it and having it just laying around for months, that's things which shouldn't happen on a regular basis but otherwise fear not - a battery should easily last 2 years and more depending on your usage, I own a Samsung Galaxy Tab 2 10.1 (which has official lineageOS support) from 2013 and it's battery is still great, despite I never changed it in about 5 years and my doughter uses it daily...
[Lenovo A3500 Guides, News, & Discussion] jimmy19742:
Muchas Gracias,Sam!:)

Yup,Nickel Cadmium batteries are gone but I have Lenovo A3000H besides my Lenovo A3500H!Their batteries last two hours despite all calibrations I made!

But thank you!

Have a nice Sunday!

Hat off!
[Lenovo A3500 Guides, News, & Discussion] Sam Nakamura:
What? Are you on mobile network all the time?

Cause I usually get around 4 to 5 hours screen on time on my a3500-fl, of course on WiFi only as it has no SIM available...
[Lenovo A3500 Guides, News, & Discussion] jimmy19742:
Nope!I just use them 24/7? !

Just switched to Lineage OS without a factory reset!

I like it!

Thanks for your help once again!:)
[Lenovo A3500 Guides, News, & Discussion] jimmy19742:
Hi ,Sam!Since after the dirty flash of Lineage OS my device got unstable,i had decided to flash RR5.8.4 and I saw you are the developer! Good job!

But because it was in in a beta 3 version,I did a clean installation of Lineage OS.

It's much, much better!

One thing I don't understand: my internal storage is 16 GB but the system files take 12GB of it while on my new Lenovo which runs 7.1.1 ,the system files are 5,5GB.

Should I flash the ROM again with wiping the system partition too?

By the way,it was not a problem to recover all applications of mine because they were synchronisated with my Google account.

Thank You in advance and looking forward to a stable RR5.8.4

Best regards!:)
[Lenovo A3500 Guides, News, & Discussion] Sam Nakamura:
lol :laugh: no I'm not the developer of this, the guy who ported this is lolpro100 from 4pda.ru, he ported this rom from a team called "liquid porting", they actually developed it and built it from source for acer Z500 and he ported it to the a3500s, I honestly got nothing to do with it, just shared my findings as I was myself searching month for usable custom software for this device, all credits to those guys, definitely...

That's not normal and should be more like on your other device, system should be around 4GB, I usually wipe system before flashing but it should get wiped anyways by the installer script, maybe from your strange partitioning for link2SD?
[Lenovo A3500 Guides, News, & Discussion] jimmy19742:
It's a bit off topic but which file manager do you use?

I use TOTAL COMMANDER and will remove the built-in ES file manager!

It's sluggish AF!

Have a nice afternoon!

Best regards: Jimmy
[Lenovo A3500 Guides, News, & Discussion] Sam Nakamura:
I use mixplorer, definitely the best I ever have tried...

https://xdaforums.com/showthread.php?t=1523691
[Lenovo A3500 Guides, News, & Discussion] Sam Nakamura:
[MENTION=8543336]jimmy19742[/MENTION]

A TWRP update is available :) you can flash it by your already installed TWRP (INSTALL, press install image, choose TWRP 3.1.1, SWIPE, choose recovery partition, swipe and use TWRP reboot option and reboot to recovery, done :)

https://xdaforums.com/android/development/recovery-twrp-3-11-lenovo-a3500-t3684225
[Lenovo A3500 Guides, News, & Discussion] jimmy19742:
Sam,You have a heart of gold!

Muchas Gracias!

Hat off!
[Lenovo A3500 Guides, News, & Discussion] jimmy19742:
Installed it yesterday,Sam!The reboot function really doesn't work but in general it's better!

Also downloaded & installed the file explorer You recommended me!

I like it!

You are my tutor in Android although I enrolled in a course at Google.

Best regards: Jimmy?
[Lenovo A3500 Guides, News, & Discussion] Sam Nakamura:
I have flashed the new TWRP image but haven't used it yet, so I didn't know about reboot function, maybe it's going to be fixed, Idk, remember you can revert to the other version the same way you updated to the newest...

You're absolutely welcome :highfive:
[Lenovo A3500 Guides, News, & Discussion] Sam Nakamura:
Here's another android 7.1.2 port, I'll check it out tonight...

Just thought I share this info!

Regards Sam

ViperOS