yashsingh1/xdaforums huggingface dataset:
[Android Software/Hacking General [Developers Only]] Teleferic:
The old hot-plug for the cpu was configured to be very strict. So when you played a video only one cpu was every used. I disabled it (cpuquiet), and added another more modern hot-plugging driver. It keeps some cpus online to handle videos. A soft limit was also set on the cpu max frequency, as it rarely needs to to hit max speed now.
[Android Software/Hacking General [Developers Only]] Goldenmeadow:
Hi!

Thanks for the link to the source :)

What is the proper way to revert Kobo back to stock? I.e. flashing ROM and then recovery? Should I do it from TWRP?

I put CM on both my kids Kobo, but one gives me grief periodically so I want to try to reinstall CM.

Thanks again!
[Android Software/Hacking General [Developers Only]] tomlemange:
Haha I have no idea, I just shared the link with the recoveries and Roms.
[Android Software/Hacking General [Developers Only]] Goldenmeadow:
No problem, I'll ask OP

---------- Post added at 11:38 PM ---------- Previous post was at 11:37 PM ----------

Teleferic, thanks a lot for your hard work on Kobo!!!

Just quick question: what is the proper way to revert back to stock? I.e. flash ROM from TWRP and then stock recovery with adb?

Sorry for noob question :)

All the best!
[Android Software/Hacking General [Developers Only]] Teleferic:
Someone inbox messaged me a while back about this;

Install or boot old recovery, it's on the first page of this thread, or in the original rom folder for downloads

Make sure recovery works!!

Wipe or backup everything, system, data, etc

Flash the macallan-ota.zip

Reboot a few times for bootloader update to kick in.

Check out this post as well for more background info.

You can try that procedure in TWRP, but it probably won't work, I never checked to see if the zip checks for system compatibility or recovery compatibility.

Aside: Still pretty busy, gotta now move all the sources from CyanogenMod to LineageOS, don't know when I'll work on that.

Kobo Arc 10HD Wiki & Downloads

Kobo Arc 10HD 12.1.1 Device Tree

Kobo Arc 10HD CM Kernel

Kobo Arc 10HD CM 12.1.1 Boot Ramdisk

Kobo Arc 10HD TWRP Recovery Ramdisk
[Android Software/Hacking General [Developers Only]] Goldenmeadow:
Thanks a lot!

I flashed recovery from Original ROM folder on Google drive and... it is CWM. Is it stock recovery? Just want to confirm :) Now I'm on full stock and can start from scratch.

All the best!
[Android Software/Hacking General [Developers Only]] Teleferic:
Nope that's not the stock recovery, it's an older custom recovery. Stock recovery is completely useless, except if the manufacturer was updating lol
[Android Software/Hacking General [Developers Only]] Goldenmeadow:
Thanks for quick reply, really appreciate it!

---------- Post added at 02:57 PM ---------- Previous post was at 02:03 PM ----------

Teleferic, sorry to bug you one more time :)

What's the latest method of putting root on 10HD? Is it still through fastboot?

Because once I issue command adb reboot bootloader, my tablet reboots with the screen with REALLY small font:

[bootloader] (built on Feb 10 2014, 03:58:41)

Device - Unlocked

Serial Number ...

Press <Home> to select...

And then I have choices:

Continue

Fastboot protocol

Recovery Kernel

Reboot

Poweroff

If I choose Continue it gives message Linux cold reboot and tablet reboots...

What am I doing wrong? :(

Thanks
[Android Software/Hacking General [Developers Only]] Teleferic:
For the stock os, you can root it using tools on the first page of this thread, or you can flash root to the system through the custom recovery, using a supersu zip flash file if you know how to do that.

Added: CWM Supersu zip flash
[Android Software/Hacking General [Developers Only]] Goldenmeadow:
supersu zip... Of course, I have CWM already... LOUD SLAP - SLAP - SLAP !!!! I feel SHTUUUUPID :(

Thanks again man!
[Android Software/Hacking General [Developers Only]] handyflo:
Hi all,

I have the Kobo Arc 7HD device with root access.

I just wanted to know if there are any custom rom out there, for exmaple cm-12.1?

Is the Kobo Arc 10HD current revision: cm-12.1-20160624-UNOFFICIAL-macallan

from Post:

https://xdaforums.com/showpost.php?p=67460822&postcount=180

compatible also with the 7HD or is it only valid for 10HD?

Is there any chance to get a proper working Custom Rom for 7HD device with WIFI, bluetooth and other features working?
[Android Software/Hacking General [Developers Only]] hipocrazy:
Can everyone else connect USB storage and access it? I cannot. Is there a fix?

---------- Post added at 02:29 AM ---------- Previous post was at 02:28 AM ----------

I think you would brick your device. This Rom is only for the 10HD I believe.
[Android Software/Hacking General [Developers Only]] carlosgardel:
VPN

Hello. Looks that developmemt have stopped. I like the rom but I have a problem trying to connect to a VPN provider. I have a subscription and tried connecting with a provided app and directly in settings options and show connected but chequing My Ip shows the original IP so im not protected. Tried also free apps to other providers ans the same happens. Looks like some file is missing in system for VPN functionality. Thanks a lot for your attention.
[Android Software/Hacking General [Developers Only]] andrew942:
Just picked up my arc 10hd and flashed this cm rom. Thank you for all your work!

I only have 1 issue with this tab/rom. I used my old nook hd+ for web browsing and managing my server through TeamViewer. Unfortunately TeamViewer seems to need opengl 2.0 which the arc 10hd on this rom doesn't seem to support. not sure if this is a noob question, but is this a rom issue or can I add opengl 2.0 without building a rom with support.

Thanks for any help you may be able to give?
[Android Software/Hacking General [Developers Only]] carlosgardel:
Hi. There is anyway to unroot cm12.1 rom apart for turning off in Developer Options? Im trying to install Magisk and is not working and that may be the culprit. Thanks!!
[Android Software/Hacking General [Developers Only]] GenghisKhan67:
Anyone have a working build.prop configuration that will fake another tablet? Market Helper doesn't work anymore, many apps are now considered "incompatible" with the device. Thanks in advance.
[Android Software/Hacking General [Developers Only]] UBA Tutorials:
Kobo Arc 7 Rom And recovery + Links

https://xdaforums.com/android/development/rom-kobo-arc-7-t3670309/post73724570#post73724570

:good:
[Android Software/Hacking General [Developers Only]] johnisme:
I reset my kobo arc 10 hd but it froze in the hard resest after doing nothing for 15 minutes so i powered it off and now it just boots into the white screen and does nothing else,i'm trying to get into the recovery so i can do a sideload of the original rom but can't get to recovery,the volume up is nearest to the power button or the other side?I've tried both ways and it either does nothing or brings up the white screen with logo and resets to power off when holding the volume button furthest away from power plus power.
[Android Software/Hacking General [Developers Only]] koontzy65:
Is there are still development for this one?
[Android Software/Hacking General [Developers Only]] virtos4:
I'm quite pessimistic about the possibility of such a chance for one simple reason: play store works with the current build.prop contents on the stock ROM. The problem is with the port of Cyanogen itself. There is a person who is trying to fix market helper:

https://xdaforums.com/showthread.php?t=2146216

If he is not successful, then there is no hope for us.
[Android Software/Hacking General [Developers Only]] GenghisKhan67:
Yeah, I had already reached out to the dev working on it, let's wait and see...
[Android Software/Hacking General [Developers Only]] Misterlamed:
Lets have a reboot of the kobo arc! :d
[Android Software/Hacking General [Developers Only]] robotfoodisgood:
I was stuck and this worked for me. If anyone is coming here from seeing the Arc10HD on RFD, definitely try this.
[Android Software/Hacking General [Developers Only]] anonymous1:
Hi guys,

Wondering if anyone can help me out with a small but serious mistake I made changing system fonts on my kids Kobo Arc?

I forgot to change permissions on the new files and now am stuck in a bootloop.

I only have the stock recovery and can boot into this and have tried 'apply update from ADB' using a flashable zip file with stock font files but get an error message: 'installation aborted' after 'verifying update package' messgae.

Is this because the zip file is not appropriately signed or another error? Even if the zip file is signed with SignAPK, it still doesn't work. I can't use ADB to push the font files to the system folder as the only ADB connection I can use from the stock recovery is to 'update from ADB' only.

dazza9075, anyone? Would appreciate any help in trying to recover my kids tablet. I don't particularly want to wipe it and start again as my kids have got lots of games that they haven't backed up and would be in tears if they lost their progress.

Thanks, in advance, for any help.

:fingers-crossed:
[Android Software/Hacking General [Developers Only]] Chaos Storm:
For those wondering about the Kobo Arc 7HD, I have some good news. :D I'm no developer, but I did manage to hack together a customized ROM that will kill the stupid requirement to use a Kobo Account. You still have to root the device and install the recovery listed at the beginning of this thread, but the upshot is that the tablet experience is better, less junk apps (I left Kobo apps in case folks actually want to use those) and you get root. Instead of running the Kobo Setup Wizard, it now runs the Google Setup Wizard. It also runs a more lean launcher, not that bloated Kobo one.

I am uploading the CWM backup (you have to restore it, detailed directions included with download) to both NeedRom and OneDrive. The OneDrive will be active first. I've attached the directions in zip format, it wouldn't let me upload the RTF version.

https://1drv.ms/u/s!AkYr1ddI8vEhgYQRTe60ZlwEab0Y-g is the link for those who want to try. Remember, flashing, rooting etc can all lead to bricked devices so proceed with caution and follow directions. If you have an issue, ask!

If I need to move this to a separate thread I can, it's just that most users hit this thread first.
[Android Software/Hacking General [Developers Only]] salty72:
I am not a Android ROM developer.

Please proceed at your own risk.

Arc 10HD only

I've mocked up a build.prop file that seems to remove the restrictions on the Play store.

Its a combination of the factory ROM and CM12.1.1

Please be careful...I killed my ROM numerous times and needed to re-install the fresh copy of the ROM through TWRP while trying to find the magic build.prop parameter.

There were no hang-ups installing the build.prop into a fresh CM12.1.1 install (or partially stale install).

To install (worked for me, you may not require all the steps):

1. Disable Wifi

2. Clear all data from the Play app (through settings->Apps->google Play Store->Clear Data/Cache)

3. Clear all data from the Play Services App (through settings->Apps->Google Play Services->Manage Space->Clear All Data)

4. Copy the build.prop file to /system (using file manager and root enabled)

5. Change the permissions of the file to 0600 (just in case it got modified)

6. Reboot

7. Enable Wifi

8. Enjoy Play Store compatibility (Chrome, Facebook, etc...)

File:

https://drive.google.com/open?id=0B7BozY_RIGSzM3ctN0dIUnJ0bjA

Sorry for the repeated warning. Just want to ensure there are no misconceptions.
[Android Software/Hacking General [Developers Only]] he191254:
Thanks! The build.prop works.

I followed the instructions and got no problems.
[Android Software/Hacking General [Developers Only]] rail205:
Thanks dude,

build prop worked like a charm.
[Android Software/Hacking General [Developers Only]] dhomas:
To anyone finding their way here after buying a refurbished Kobo on eBay in September 2017, here is my recommendation for a quick and easy root: towelroot v1. Since Kobo stopped updating this tab, the exploit used for towelroot was never patched (the Kobo kernel, dated Feb 12th, 2014, pre-dates the exploit being patched on June 3rd, 2014). You can find towelroot v1 here: https://xdaforums.com/showpost.php?p=54043232&postcount=5

Towelroot v3 does not seem to work with this device, so use v1 from the link.

---------- Post added at 15:03 ---------- Previous post was at 15:01 ----------

I got the Arc 7HD (from RFD), and I was able to use towelroot. I don't know if the Arc 10HD has a newer kernel, but if it does not, this is the way to go. See my above post.
[Android Software/Hacking General [Developers Only]] theshowman:
Hi

Thanks for the tip.

I also got a 7HD - upon rooting, did you make any tweaks for performance?

I find the 7HD to be quite sluggish - and this is with a fresh setup.

Did you remove any apks?

Any changes to any kernel scheduling parameters?

Any tweaks for performance?

TIA
[Android Software/Hacking General [Developers Only]] Wilsonb:
Bought this cheap tablet for Ebook reading. Not extremely important, BUT are there

any custom Roms

for this tablet? Old Android on devices is a peeve of mine..

2TF0801 - Kobo Arc 10HD 16 GB Tablet
[Android Software/Hacking General [Developers Only]] Chaos Storm:
I used KingRoot to root the tablet and then create my hacked ROM. No real custom ROMS for the 7HD with the exception of my Google Wizard version which gives root and no requirement to have a Kobo Account once it's flashed. Plus I got rid of the damn Kobo launcher that thing was krusty.
[Android Software/Hacking General [Developers Only]] dhomas:
Thanks for the build.prop. It works quite well. Apps that were previously "Not compatible with your device", no longer get this message.

However, I can't even locate the Netflix app in the Play Store. Anyone else having this issue?
[Android Software/Hacking General [Developers Only]] scottdanpor:
It's because you're rooted. Netflix won't display for anyone who's rooted. You can side load it, like I did, but the videos won't play.
[Android Software/Hacking General [Developers Only]] scottdanpor:
To transfer backups to PC, I am unable to mount the SD card in TWRP. I see the backups are created in a 'clockworksmod' folder, but I can't see that folder using root browser in cm12. Anybody been able to transfer their backup to their PC?

Edit: Found em in Data/media/clockworkmod
[Android Software/Hacking General [Developers Only]] Glancealot:
Can someone please build a KitKat or Lollipop for Arc 7 HD? amazing resolution but stuck with Jelly Bean!!!
[Android Software/Hacking General [Developers Only]] Buiatti:
I have a Kobo arc 7HD, with Android 4.2.2, and when I try to run Impactor, I'm receiving an error message:

adb.cpp:535

"INSTALL_FAILED_INVALID_APK"

After this message, the root stops and it's not rooting my device. Does anybody know what should I do to have my device rooted?

Thanks
[Android Software/Hacking General [Developers Only]] GenghisKhan67:
Go to previous pages in this thread or head to Github: https://github.com/tdro/android_device_kobo_macallan/wiki/Kobo-Arc-10HD-Tablet-Wiki
[Android Software/Hacking General [Developers Only]] dhomas:
I couldn't get Impactor to work, either. I think this method may now be obsolete. Please see my previous comment:

https://xdaforums.com/showpost.php?p=74000980&postcount=422
[Android Software/Hacking General [Developers Only]] johnisme:
Anyone else notice that cast screen no longer works on Cyanogenmod 12.1?Not a big issue but wondering if there's way to fix that?
[Android Software/Hacking General [Developers Only]] handyflo:
Is there also am cyanogen mod Version for:

Kobo Arc 7HD?

Gesendet von meinem C2 mit Tapatalk
[Android Software/Hacking General [Developers Only]] handyflo:
Is there any technical difference between. Arc 7hd & 10hd?

I tried to flash the cyanogenmod Version for the arc10hd on my arc7hd without success, any other experiences?

Gesendet von meinem C2 mit Tapatalk
[Android Software/Hacking General [Developers Only]] UBA Tutorials:
Hi, could any one backup his preloader.bin for Kobo Arc 7 , i flashed a wrong preloader, and now IAM stuck, please upload for me, ??????
[Android Software/Hacking General [Developers Only]] el_pablo:
Hey guys, my mom owns this tablet to read some magazines. Unfortunately the app she uses to read her issues is no more supported. I tried towelroot v1 from a previous link, but it does not seem to work. After rebooting, I’ve check with rootchecker but it wasn’t rooted. Also play protect is an annoyance...
[Android Software/Hacking General [Developers Only]] he191254:
Use Cydia Impactor v0.9.14 to root. It worked for me.
[Android Software/Hacking General [Developers Only]] dw33b:
Mad props to everyone contributing to the development of the Kobo arc 10! Please be advised that I am closer to a n00b than dev, so be gentle! I was able to get Cyanogenmod on the tablet, install GAPPS, but when I try to add the build.prop, the tablet won't boot. It just hangs on the kobo arc HD 10 startup screen and doesn't proceed. I have to reinstall the rom..

I think I'm following the instructions correctly. Maybe I'm dropping the file in the wrong place? /system is the right folder? There is a build.prop in that folder, and it wants to overwrite, so I say 'Yes'. :confused:

Honestly, the main reason I'm fiddling with the tablet is to get it to run the game Township for the wife (it was on the tablet with stock, but it would sometimes freeze so I thought cyanogenmod was the answer. With the new rom, Google Playstore will not let me DL - 'incompatible device', sideloading doesn't work, the game will start, but will go to black screen. So, build.prop is my last hope.. thoughts?

Thanks! :D
[Android Software/Hacking General [Developers Only]] DrBeaker:
I'll show some love as I revive these devices to use in Smart Home Automation.

Towelroot V1 APK is linked. (My Google Drive, its not going anywhere): Here

You have to flash the files, boot into the OS and then stop the services in play store Then Copy build.prop over and you should be ok. Here is the link to original post:

https://xdaforums.com/showpost.php?p=73880475&postcount=419
[Android Software/Hacking General [Developers Only]] madman604:
my arc was reset and now its stuck at the setup screen where it keeps downloading updates and rebooting back to the same setup screen and fails to update again.

tried hard resets, clearing cache. nothing

any ideas?

EDIT NOV 17 2018

i fogot my arc was borked and booted it up, went through the download update again and it was a 400+ mb file. it actually finished setup this time. reason. unknown. possibly new firmware that was corrected?
[Android Software/Hacking General [Developers Only]] zimmie:
Same here let me know if you find a solution.
[Android Software/Hacking General [Developers Only]] theflyingsquirrel:
I installed Netflix version 3.14.3 build 5200 and it works. I can watch the videos normally.

The only problem is the subtitle won't work.

Did you try boot into recovery and reflash the rom?
[Android Software/Hacking General [Developers Only]] theflyingsquirrel:
I just installed cm 12.1.1. But I çannot install the latest version of Netflix. Would this prop fix it?
[Android Software/Hacking General [Developers Only]] zimmie:
Which room? I don't have any sources for any ROMs or even stock rom for the arc.

Do you have any links for a stock rom?

Thanks
[Android Software/Hacking General [Developers Only]] theflyingsquirrel:
https://www.google.ca/amp/s/amp.red...genmod_121android_511_now_available_to_flash/

I remember in the download the latest rom link, there is a stock rom folder. Check it out.

You probably didn't root the device. But may be you can fastboot the device with volume down and power button when turn on and do a fastboot flash? I never did a fast boot flash with this device before. But it may work.
[Android Software/Hacking General [Developers Only]] funnypanks:
Anyone install the new arc 10hd update? 455mb. Wonder if it messes with rootability.

It says:

We’re releasing a mandatory software update for all kobo arc tablets in order to stay aligned with global internet security standards
[Android Software/Hacking General [Developers Only]] zimmie:
That looks like a 10D.

I'm after the original arc.
[Android Software/Hacking General [Developers Only]] blindhai:
Is this device powerful enough to play 1080p Netflix? Mine gets very hot, when i try this, but i am not sure if i use a version of CM. Anyone else with these problem?
[Android Software/Hacking General [Developers Only]] EveryCoolNameWasTaken:
So, my Arc is already rooted (it's an original Arc) and I know there's a custom recovery. Any chance of a custom ROM? Anything more lightweight? The default ROM started getting awfully slow on the device.
[Android Software/Hacking General [Developers Only]] he191254:
Did anyone get magisk working with this tablet? I flashed the lastest magisk and it didn't work.

Which version would work with this tablet? I'm using CyanogenMod with Android 5.1
[Android Software/Hacking General [Developers Only]] madman604:
Update. My arc 7 updated yesterday and fixed the boot/setup loop.
[Android Software/Hacking General [Developers Only]] levi47:
Can anyone confirm the ability to retain or regain root access after the most recent update? I've been using root and the Xposed framework in my arc10hd, works as a decent media pad but don't want to risk losing root for the update.
[Android Software/Hacking General [Developers Only]] funnypanks:
Towelroot still works after update. I didn't have it rooted initially so I can't comment on retaining root.
[Android Software/Hacking General [Developers Only]] samidos:
fgf
[Android Software/Hacking General [Developers Only]] jasius:
Arc 10HD

My Kobo Arc 10 HD was doing ok when I first installed the newest ROM, I had screen flicker, but I installed another kernel and it came around, but the day after the screen went, well half processed, then on reboots I could barely start any apps. Now when I try to do a full clean install(full wipe) it'll load into android but stop on 12 out of 86(?) and the screen will flicker like crazy and lockup as the flicker will continue but the install progress won't. I tried using the newest kernel but that doesn't work either.

People with flickering screen issue, how did you resolve it?

Also Kernel R9 is actually R8, at least it reports R8 when it's installing.

I'd appreciate any help at all, maybe theres real heat damage to the tablet now, when it was going down the drain before I had to format it, it got REALLY hot near the power button.

TWRP is still working perfectly, so I can push any files that will make this tablet work and be stable, I just need ot know what combination people are finding stable enough for surfing with a little bit of youtube.
[Android Software/Hacking General [Developers Only]] jfp555:
Hey guys! I'm very happy to see that there are still some incredibly talented and awesome devs still working on these devices. I'm using my Arc 10hd as a comic book and article reader, and still love it. However, it is an old device now.

I wanted to know the model/serial number of the battery of the device as I want to replace the old one whose battery life is really low now. I would greatly appreciate any help in this regard. I can also buy from China as I travel there often.

Once again, much thanks for everything guys.

(Also, i'm running stock firmware, although rooted. Is there any way this tablet can handle youtube videos at 1080p? It stutters and drops frames on mine)
[Android Software/Hacking General [Developers Only]] Hobotrader:
Thanks! For anyone still tinkering in 2019 lol:

ro.com.google.gmsversion=4.2_r3

needs to be changed to

ro.com.google.gmsversion=5.1.1

Do a soft reboot (reboot options can access this through the developer module). Thanks, Salty72 for the script! Took me awhile to figure out as I'm not a developer either. Had to research what 0600 was (root read-write only).