yashsingh1/xdaforums huggingface dataset:
[Nexus 7 Android Development] Flounderist:
Some time ago I built a custom kernel that booted on Lineage ROM. It has been packed as boot.img.

Feel free to try. The fantastic XDA app cannot upload the file today. You will find on LOS 14.1 thread, page 71.
[Nexus 7 Android Development] AndDiSa:
Version with February 2020 security fixes is out

Hi guys, I would like to keep you flashing your Nexus device :)

I've just updated the repositories and I have already updated the OP with the links to the latest builds.

Grouper OTA-Package (Build 20200208) (md5: 118bbb65c0751e57cbb8ba40ff609742)

Tilapia OTA-Package (Build 20200208)(md5: 2dda2e76deb4c6b73177c966165afa59)

... and as always, the builds are not tested yet, so please report issues / findings.
[Nexus 7 Android Development] btsam:
Many Thanks! forgive my innocence as 'm relatively new to custom roms - how do I update? just flash via recovery?

Also 've just dug out an old 16gb grouper and installe the rom without gapps currently its amazng how fast it runs compared to even having a pico gapps package installed and am tempted to keep away from google and use another method for apps...
[Nexus 7 Android Development] AndDiSa:
[MENTION=10466411]btsam[/MENTION] probably you would like to have a look at the OP. If your device matches the preconditions (unlocked bootloader, latest TWRP custom recovery, ...) it's sufficient to flash the rom via recovery. Coming from a different ROM a full wipe is recommended as otherwise issues might occur (even later after some time of usage).
[Nexus 7 Android Development] btsam:
Thanks very much for clarifying - just wanted to check, will need to reinstall my kernel afterwards - i'm using DC?
[Nexus 7 Android Development] AndDiSa:
[MENTION=10466411]btsam[/MENTION] not sure whether the DC-kernel will work with the ROM but you can try. Just flash your kernel and try to start the device ... at most re-flash the ROM if the DC kernel is not working at all.
[Nexus 7 Android Development] SGH-i200:
NanoDroid (microG) instead of GApps

You should look up NanoDroid (microG)! I use it with LOS14.1 on my Axon 7 Mini, and my battery lasts so much longer! :)

NanoDroid (microG, pseudo-debloat, F-Droid + apps):

https://xdaforums.com/apps/magisk/module-nanomod-5-0-20170405-microg-t3584928/amp/

I download APKs via "Aurora Store - A Google Playstore Client":

https://f-droid.org/en/packages/com.aurora.store/

If someone didn't know yet what's the noble motivation behind this: https://xdaforums.com/showpost.php?p=77354175

Thank you very much for still supporting this device. It's a shame that you don't use/support all my other devices as well. I would pay for this kind of support. I'm sure a lot of others would, too. But the companies want to sell new hardware instead of selling updates.
[Nexus 7 Android Development] spark001uk:
Is anyone else getting huge amounts of nlpcollectorwakelock / nlpwakelock ? I'm getting near on 1000 an hour in standby (drains batt by 2-3%/hr).

It has been like it the last few builds, so it's perhaps not related to this firmware, rather a general android issue? After a quick google on it this seems a fairly common problem on numerous devices.
[Nexus 7 Android Development] xheadx:
touch controls problem

hey, i apreciate your work and love this rom as well. im having one only issue,2 of the 3 touch controls (the one to go home and , the one to open the multitask dont seem to work for me) the back on the other hand works. any idea what this could be?

thank you
[Nexus 7 Android Development] Sam Nakamura:
To further add to the 'noble reasons'...

I'm really convinced that the whole custom ROM scene makes quite a difference here!
[Nexus 7 Android Development] CamoGeko:
Ain't that the truth of 2020.

I'm so over most Android manufacturers now, all they want to do is sell you expensive new tech with a year's worth of updates. If that!

Unless you fork out for a Pixel.

Sent from my mata using Thebear Blue XDA Labs
[Nexus 7 Android Development] SGH-i200:
You describe very well why I buy last generation Pixel smartphones for my whole family. The Pixel 2 and 3a are real cheap on eBay nowadays.
[Nexus 7 Android Development] AndDiSa:
The 3a is really a very good device for it's price ... ;)
[Nexus 7 Android Development] CamoGeko:
You made a good move there!

Same reason I bought an Essential Phone in 2018, its a perfect example of a nicely balanced Android device for not much money at all... and with updates until 2022 at least I'm happy for another couple of years. This is how Android should be, relatively cheap and with long updates! :good:

It is a good one, although personally I would go for a nice condition used Pixel 2XL 128GB. It has a better SoC, screen, storage, speakers... just about everything and for about the same price or cheaper.
[Nexus 7 Android Development] evo4ger:
Wow this rom restored my Nexus 7! If you can't pass the initial screen and it crashes go select a language to force it to next step worked for me
[Nexus 7 Android Development] Sir Charles82:
Just flashed the two N7 Grouper in our family with the latest ROM and they work flawless-

Thanks for still providing these devices with updates :)
[Nexus 7 Android Development] kozmo2k4:
R.I.P,. my grouper.

Bought is (barely) used in 2014.

Last month started to freeze randomly.

Flash it back to factory, then back to this AOSP.

Week later, random freezing again.

Went ahead and formatted the three basic partitions in fastboot. Flashed AOSP again; worked for a few days, until I started to add more apps.

Now I can only boot it in to fastboot and or TWRP. Can't format system nor userdata.

Thank you, [MENTION=2188693]AndDiSa[/MENTION], for keeping this ancient tablet alive for this long.
[Nexus 7 Android Development] laugeek57:
Mine also begins to age I have to press regularly on the back so that the sound comes back on the left and the right ... bought in November 2012

Thanks AndiSa:D
[Nexus 7 Android Development] SGH-i200:
Bad news for you: "Essential shuts down: No more PH-1 updates, No GEM phone" https://www.xda-developers.com/essential-shut-down-no-more-updates/

This shows that a company which only updates the old phones and does not sell new ones won't stay long in this market. Too bad.

Will you switch to a Pixel now? Maybe someone will build a custom ROM for the Essential Phone l, with the help of the tools mentioned in the XDA news article.
[Nexus 7 Android Development] chinchulin01:
Thank you so much for your reply!
[Nexus 7 Android Development] NikoNik7:
The system goes into reboot after connecting to the Internet through the Hot Spot

After installing the pre-Christmas update, problems with working via Wi-Fi mobile phone on Tilapia disappeared. If the author has not corrected anything, then Google spoils the communication module from time to time. I 'm afraid to install further versions with their security updates.
[Nexus 7 Android Development] :
Dirty flashed (grouper) and whilst it all worked, my Nexus was rather laggy. As I'd dirty flashed last month's update, I figured maybe it was time for a spring clean. So I wiped, clean flashed and re-installed everything from scratch. All okay (touch wood). Thanks again [MENTION=2188693]AndDiSa[/MENTION] :good:

Wiping and clean flashing does make the update process longer but I do think it's worth the extra effort.
[Nexus 7 Android Development] CamoGeko:
Clean flashing is always preferred and always worth it on any Android device. ;)

Just gotta remember to back-up first. :laugh:
[Nexus 7 Android Development] NikoNik7:
Quite often I update completely, but several versions in a row this did not eliminate the problem of spontaneous reboot when working through Hot Spot
[Nexus 7 Android Development] AndDiSa:
Version with March 2020 security fixes is out

... new month new fixes :)

I've just updated the repositories and I have already updated the OP with the links to the latest builds.

Grouper OTA-Package (Build 20200303) (md5: 8ddde21862486f1b29bc22aab66071de)

Tilapia OTA-Package (Build 20200303)(md5: 300899bcf2c02b64770d54a563ed74b1)

... and as always, the builds are not tested yet, so please report issues / findings. If there are no issues I'll update the OP within the next days.
[Nexus 7 Android Development] :
Grouper clean flashed, rooted, gapps installed. All up and running cleanly and smoothly. No obvious faults or problems. :good:
[Nexus 7 Android Development] dark0shark:
Dirty flashed, no problem so far. Great work, as always.
[Nexus 7 Android Development] mdncb:
Was previously using LineageOS 14.1. Did a factory reset, wiped dalvik/cache, installed the current build (20200303), wiped dalvik/cache again and booted up. No Gapps. Takes a while to boot the first time as usual but eventually booted up with no problems. It's worth noting that there's no file manager with this method, so I installed the FDroid APK via adb install. After that, booted into recovery and installed Magisk v20.1, and again wiped dalvik/cache. No bootloops, no crashes, so far all is well.

So far it's a night & day difference between LineageOS 14.1 (laggy, unstable, battery vampire) and this (silky smooth). Will test more over the next week, but I'm already very impressed with what I see.
[Nexus 7 Android Development] Sylar:
Hi,Nexus 7 could sopport Netflix HD, why I can't see Netflix in HD but only in SD? There is a method to see?

It says me drm lvl 3..

[MENTION=2188693]AndDiSa[/MENTION]
[Nexus 7 Android Development] NeoMatrixJR:
So, question for you guys. I have my wife's old 2012 7, I'm pretty sure the USB port in it is dead...again. It was slow as hell on the 5.x ROM I had it on. Not sure if that was stock...can't remember what I flashed last. Has unlocked bootloader and TWRP. Failed to transfer this via ADB sideload and now it won't boot. Not sure if it's worth trying to get ANOTHER USB port for this to resurrect it or is it time to e-waste it? Does this ROM run with any speed or is my device just getting old?
[Nexus 7 Android Development] mdncb:
Fixing the USB port could not be cheaper or easier to do.

https://www.aliexpress.com/item/32848137018.html

https://www.ifixit.com/Guide/Nexus+7+I-O+Assembly+Cable+Replacement/9925

You don't even really need the plastic spudger to open the case (although it's easier and you risk scratching the plastic if you use anything metal), but you will need some very fine screwdrivers for the screws inside. No suction caps or special glues needed. If there's nothing else wrong with your tablet you should absolutely go ahead and buy the part for a couple of dollars to fix it. I bought that USB assembly from that exact seller and I can vouch that it works fine.

And this ROM so far is smooth as silk. Battery usage is normal, bluetooth works, everything is all good as far as I can see.
[Nexus 7 Android Development] AndDiSa:
Unfortunately I don't have the device any more so I cannot do any test on it, but I have a question / suggestion:

- do you have installed Magisk? If not, I suggest you to install it. The Nexus 7 is quite old and most likely not in the list of supported devices. As Magisk fakes the device identification string it's more likely that the device is beeing identified as an eligible device.
[Nexus 7 Android Development] Schwamml:
Issue with not booting roms

Hi there,

after a while using CM10 on my Grouper i found this rom and went on to update my Nexus but ...

I'm facing 2 main issues and maybe someone can help me to solve one of them. First i went on updating my twrp to the latest 3.3.1 for my grouper. Then i flashed the latest aosp_20200303. After a while of the boot screen, Google Logo, it went back to twrp. So i went on and tried the following images

aosp_grouper-7.1-ota-eng-20161127.ds.zip ... booting ok

aosp_grouper-7.1.1-ota-eng-20170105.ds.zip ... booting ok

aosp_grouper-7.1.1-ota-eng-20170308.ds.zip ... booting ok

aosp_grouper-7.1.2-ota-eng-20170407.ds.zip ... booting ok

aosp_grouper-7.1.2-ota-eng-20180112.ds.zip ... booting ok

aosp_grouper-7.1.2-ota-eng-20190209.ds.zip ... NO boot

aosp_grouper-7.1.2-ota-20200112eng.ds.zip ... NO boot

aosp_grouper-7.1.2-ota-20200303.eng.ds.zip ... NO boot

So i went on flashing the last stock image, to maybe solve something. Re flashed twrp and aosp_20200303 but no booting. Does someone have an idea what i'm doing wrong? Otherwise i have to go back on my god old cm10 :D

With all the images above i did a clean flash. Even formatting data. Tried to do a sideload but always same result.

2 Things i wanna mention. Once, a long time ago, i had to change my file system to ext4. Can that cause issues?

A other thing is, my Nexus runs without battery. My battery died and i connected the nexus directly to an usb cable. But by doing so the system wont get any battery status maybe this is an issue?

I have dmesg.log and recovery.log if needed of an boot returning to recovery but can't post it because of it's size

I'm sorry about the long post but i love this device and i love that someone is still doing the work of providing images! THANK YOU!
[Nexus 7 Android Development] AndDiSa:
[MENTION=9566004]Schwamml[/MENTION] are you installing the ota only or are you installing Gapps package, too? If yes, what Gapps package do you use?

It's a bit difficult to give you a hint ... but probably running the device without battery could be the reason for your bootloops. Together with [MENTION=8559165]OlliWi[/MENTION] I changed something in the kernel regarding charging, so I would not completely exclude this for the reason of your bootloops.
[Nexus 7 Android Development] OlliWi:
Hi

Haven´t been here for a while and my battery is about to die. Don´t know which ROM i´m running right now. Maybe september or october release of last year.

Will try the latest ROM.
[Nexus 7 Android Development] rori1977:
Flawless upgrade Grouper March 2020

Hi,

grouper update to March built went perfectly fine., comming from previous February built.

I also had to re-flash GApps pico to latest build, otherwise Google Play would crash.

One flaw I noticed is that the automatic NTP timeserver sync returns a wrong time. Clock is showing 15:00 when it should show 16:00. German wintertime here.

But this can be easily corrected using the manual setting. Nevertheless I wanted to mention it as it is the only thing I noticed in this great and reliably updated ROM.

Thanks for keeping Grouper alive and secure in 2020.
[Nexus 7 Android Development] Schwamml:
Hi [MENTION=2188693]AndDiSa[/MENTION], i tried with gapps and without gapps. Always taking care of wiping cache, system ...

I tried the newest gapps (open_gapps-arm-7.1-pico-20200307) and a gapps package i used before on lineageos (open_gapps-arm-7.1-pico-20190504). The older aosp images are fine with and without gapps. So i think gapps is not the issue.

Is there any check like on stock image for the battery state?

Thank you

Edit:

I found the last working image: 20190110 (AOSP 7.1.2)

Not booting from: 20190209 (AOSP 7.1.2)

Change Log:

Security fixes for February 2019 applied

huge amount of changes in the kernel (for details have a look at Github)

bugfixes and optimizations cherry picked from nvidia 3.1 kernel

further optimized charging behaviour

So i think i will stay on the 20190110 one.
[Nexus 7 Android Development] TureX:
Hi! I noticed a funny bug, if wifi password contain numbers and letters in wpa2 , that have problems to connect. It Is not present if password contains only letters or only numbers. There Is any fix? Thanks in Advance and sorry for my english
[Nexus 7 Android Development] AndDiSa:
[MENTION=3777227]TureX[/MENTION] sounds strange to me. I always used letters and numbers in my wifi passwords and did not notice connection issues. Probably you are facing a different issue here not directly related to the password.
[Nexus 7 Android Development] TureX:
Hi ,sounds strange to me too, bug i tried ti change password ti only letters or only numbers and It woks. If i take a mixed password , he try to connect but Just say "save". I Will provide a log if you want. Thanks for you fantastic work!

P.s. i'm using your latest rom ,clean flash without gapps and without magisk
[Nexus 7 Android Development] Vlad9ck:
Grouper + the latest build: no issues with WiFi password.
[Nexus 7 Android Development] TureX:
Hi ! this is logcat related to wifi issue, maybe is releted to protected management frame(pmf), i tried to set it to 0 but i can't provide it correctly permission. Thanks in advance

EDIT: SOLVED by putting pmf = 0 on data/misc/wifi/wpa_supplicant.conf , get chmod 777 wpa_supplicant.conf , chown wifi:wifi wpa_supplicant.conf , restorecon -Rv wpa_supplicant.conf.
[Nexus 7 Android Development] xoses1973:
Instalada última versión de marzo.. Nada de problemas, muy fluído todo... Gracias... Gracias.. Me alegro que sigas poniendo al día esta rom.. Fantastico.

Enviado desde mi Redmi 5 Plus mediante Tapatalk
[Nexus 7 Android Development] RamiBot:
I tried to install this ROM after wiping stock rom using twrp.

After installing the ROM and gapps (according to the instructions in post1) and booting to system, the device stuck on android logo (changing colors all the time), for more than 24 hours.

What can I do?

B.T.W: Wasn't able to flash twrp (MD5 error), had to use fastboot every time to boot twrp for flashing.
[Nexus 7 Android Development] AndDiSa:
[MENTION=4089599]RamiBot[/MENTION] ... but the android logo is black and white

Are you sure the ROM is installed correctly? I suppose the best way is to start over.
[Nexus 7 Android Development] RamiBot:
Yes, its black and white...

I tried to to it many many times...

Maybe my issue is related to the problem flashing twrp?
[Nexus 7 Android Development] AndDiSa:
[MENTION=4089599]RamiBot[/MENTION] depends on the error messages / issues you are getting when trying to flash twrp, without additional information nowbody can tell you.
[Nexus 7 Android Development] RamiBot:
I have successfully flashed twrp as instucted in the first post.

I have also installed the rom zip and the gapps (after reboot to recovery).

Now I'm waiting for the system to boot, I'm on the android logo again (switching colors black/white shades).

It's been more than 15min now...

Attached SS from my fastboot mode.

[IMG="fastboot mode ss"]https://i.imgur.com/V5LD1q1.png[/IMG]
[Nexus 7 Android Development] AndDiSa:
[MENTION=4089599]RamiBot[/MENTION] on a fresh install it might stay on that screen up to 20/25 minutes ...
[Nexus 7 Android Development] RamiBot:
Its over an hour...
[Nexus 7 Android Development] AndDiSa:
[MENTION=4089599]RamiBot[/MENTION] that's much too much

you can try to connect with your PC and try go get a logcat while booting ... but this might not work as adb connection probably is not allowed on a newly installed device
[Nexus 7 Android Development] AndDiSa:
edited (double post)
[Nexus 7 Android Development] RamiBot:
Few hours passed, and it's still on the logo /:
[Nexus 7 Android Development] RamiBot:
Its still on the logo after 24 hours
[Nexus 7 Android Development] xoses1973:
AndDisa, que cambios o mejoras tiene la rom de marzo Gracias

Enviado desde mi Redmi 5 Plus mediante Tapatalk
[Nexus 7 Android Development] Polarisfff:
Hello,

which custom Kernel can I flash? Wifi is laggy...

With Slimrom was it much better wifi.

Greetings
[Nexus 7 Android Development] Polarisfff:
And battery loading is slow.

Thanks for the second life of my tilapia.

Greetings
[Nexus 7 Android Development] RamiBot:
Do you have any other idea?

Do you recommend a full wipe of some kind before flashing the ROM? (using TWRP)?
[Nexus 7 Android Development] santi1993:
u are installing a 3g tilapia rom on a wifi grouper device, maybe thats the cause.

thanks the engineer that builds the bootloader ur device isnt bricked hah
[Nexus 7 Android Development] RamiBot:
No, im installing the following zip:

aosp_grouper-7.1.2-ota-20200303.eng.ds.zip

---------- Post added at 12:50 PM ---------- Previous post was at 12:40 PM ----------

Maybe the problem is related to the failure I see during factory reset?
[Nexus 7 Android Development] mikeataol:
Since the beginning of your posts, everything has pointed in my opinion to corrupted/incorrect partitions

If you cant get TWRP to work correctly from the recovery partition, then you need to get to the point where you can.

then TWRP "might" help you get the /cache /system /data partitions where they need to be

https://xdaforums.com/nexus-7/help/nexus-7-grouper-corrupted-partitions-t3298140
[Nexus 7 Android Development] xoses1973:
AndDisa, what changes or improvements does the March rom have? Thanks

Enviado desde mi Redmi 5 Plus mediante Tapatalk
[Nexus 7 Android Development] AndDiSa:
As written in the OP: security patches for March 2020
[Nexus 7 Android Development] tbmmbt:
Just wanted to thank you [MENTION=2188693]AndDiSa[/MENTION] for a fantastic ROM. I tried to revive an old Nexus 7 Grouper about a year ago (can't remember which ROM I tried back then) and it was OK but still sluggish and not really usable. Then by complete chance a couple of days ago I saw mention of your ROM and gave it a try today. So far it seems amazing and seems to have made it completely usable again so I've given my 7 year old daughter a tablet that's a year older than her and she loves it!
[Nexus 7 Android Development] supertiger1234:
It seems like the ROM stopped working after 2 days of usage. One day I woke up and pressed the power button and nothing happened. I tried turning it on, it turns on to the android logo and after few seconds it turns off again. Reflashing fixed it ?
[Nexus 7 Android Development] AndDiSa:
Battery power too low?
[Nexus 7 Android Development] supertiger1234:
Battery was 90%. I even plugged it in charger to see if it would fix but nop :( reflashing fixed it.

Thanks for the fast reply :)
[Nexus 7 Android Development] Sam Nakamura:
Just out of interest...

-what exactly did you flash, only ROM & GAPPs?

-battery is fine, no strange behavior like sudden lost of charge (like after reboot it goes from 80% to 59% in a instance?

-ever happened before on this device with another ROM?

it's rather interesting because that's not an issue you typically find here, I actually can't remember even a single report the last 2 years I'm around here in this device specific forum because of getting a N7 in my hands...

I only can confirm that [MENTION=2188693]AndDiSa[/MENTION] does a very good job stability- and performance-wise, even though he doesn't actually own the device anymore as it broke half a year ago, I honesty start to doubt him being human, providing new builds like clockwork every month... he must be artificial intelligence disguised as XDA contributor, something weird is going on, I believe...

anyways, without having seen any logs or extended reports/tests my guts scream 'hardware issue', my guts aren't always accurately analysing thing's, depending on how much beer they had, hunger is also an issue :angel::silly::cool:
[Nexus 7 Android Development] supertiger1234:
I am very thankful for this rom, I think it's the smoothest I ever used. :)

I flashed the rom and then rebooted to recovery again and then flashed gapps. Nothing else.

The battery seems to be fine, I never noticed any jumps. I could go to twrp fine and even flashed the rom again without it being connected to the charger.

I havnt been using this tablet much after all the lag and issues so im not quiet sure.

If this happens again, how could i get the logcat?

Thanks :)
[Nexus 7 Android Development] Sam Nakamura:
That's for a running system:

https://developer.android.com/studio/command-line/logcat.html

In your case it's shutting down, so typical logcat won't be of much use, what could you log then, nothing probably...

This one makes probably more sense, executed right after you recognize it was crashing:

cat /proc/last_kmsg

However reading post 1 & 2 will also be helpful, Andi has probably written what to do when something goes wrong or he might tell soon...

Good luck!
[Nexus 7 Android Development] tbmmbt:
Still really pleased with the performance of this ROM but it seems to have a strange charging issue, mainly that it charges extremely slowly and even sometimes seems to lose power if used while charging. A quick search of the post seems to show other people mentioning this - has there ever been a fix or workaround?