yashsingh1/xdaforums huggingface dataset:
[Nexus 7 General] zeigan:
This is a major bummer for me. I was hoping 4.2.1 would address this problem but it didn't. I'm having to compromise due to the fact that since 4.2 I was finally able to use the pogo pins from my custom dash dock to charge my N7. Bluetooth audio needs to be fixed soon. For now I suppose I'll have to download my music and play locally. I can't stream since having Wi-Fi on is what causes audio to stutter during data transfers.
[Nexus 7 General] Jazd71:
Had update and battery status says 98% after 9hr57mins though mostly on standby. Better that's for sure. Less lag and still Bluetooth issues.
[Nexus 7 General] DrEzkimo:
Just got the update, all went smooth. No issues since removing HD widgets and update is no change.
[Nexus 7 General] phillip1953:
Unplugged mine at 5 am. Been tethered with my evo3d since 6 am. I'm at 87%.

Life with 4.2.1 has been good.
[Nexus 7 General] platodd:
Just got it in Virginia, so far so good.
[Nexus 7 General] SkaterOllie795:
Just got it in the UK. The status bar seems much smoother for me. Before the update when I flicked the status bar at the top down it would sometimes fall down a bit and then return back to the top. Seems perfect now :D
[Nexus 7 General] thehetfield:
Indeed

Inviato dal mio Nexus 7 con Tapatalk 2
[Nexus 7 General] razorj:
Wow 4.2.1 seems a whole lot smoother and the lag when transitioning thru screens is gone on my tablet!
[Nexus 7 General] tbubba:
I'm having random reboots more frequently with this update 100% stock and not rooted
[Nexus 7 General] AgentBEATS:
I just got the update earlier and I've noticed some weird behaviour since. Specifically with texts, I've started receiving duplicates of messages people send to me at random intervals. 3 seems to be the limit and they come anywhere between 2 and 20 minutes apart, very odd and the only thing that has changed is the update to 4.2.1. Anyone else getting something similar?

Edit:

Opps meant this for the Nexus 4 forum.
[Nexus 7 General] VA3DBJ:
4.2.1 has been great so far. The battery life has been great. Only 1 FC, but I think it was app related.
[Nexus 7 General] kepapas:
Seems more stable
[Nexus 7 General] muralicoolsam:
bug in 4.2.1

Hey guys found a bug! Go to storage in the settings and clear the cached data! and go to pictures and videos option (under the the total space column) and u will get error saying "No external storage available" and u cant access ur galley..the same error shows up ..u have to reboot the tab !to access gallery !
[Nexus 7 General] WasherUK:
Doesn't sound like much fun, I'll have a beer instead.
[Nexus 7 General] miki67:
Two days in on 4.2.1 with no more reboots or other issues. Now battery life strong at 3 days against one day before. Better fluidity, very good update...:)
[Nexus 7 General] szymon247:
Still didn't fix the autobrightness problem :(

---------- Post added at 05:58 PM ---------- Previous post was at 05:54 PM ----------

After the 4.2.1 update I still have it. My friends has it as well on his new 32gb Nexus 7. On 4.1.2 it wasn't an issue - autobrightness wasn't perfect but didn't flicker.

Maybe you have different lighting conditions (for example rarely use it in complete darkness).
[Nexus 7 General] Ketzal:
Try an app named Lux. It gets rid of the screen flicker. Still does a bit in YouTube videos, but generally solves it.
[Nexus 7 General] phonic:
On my 16GB unit, it was barely noticeable. On my 32GB unit, it was severely noticeable (flickering when it adjusted the brightness automatically or if I had it on the lowest setting manually. On my 3G unit, I don't have any brightness flickering whatsoever. All three units, with different results, were tested under the exact same environmental conditions. And the issue was noticeable (or not, respectively), across different versions of Android. In fact, I noticed no differences after upgrading (good or bad). The only changes that did help in the 32GB case was a custom kernel.

My understanding, based on other comments, is that it has more to do with the Wi-Fi hardware causing interference with the backlight, especially in weak wi-fi areas. This definitely sounds plausible, but would also more support the issue being hit or miss based on hardware. While I haven't taken the back of my new 3G unit (yet), other people have and put comparison pictures up. There were some major changes in the layout of the internal components, so that might explain why the 3G units, at least in my case, don't suffer from this issue.

Additionally, my 3G unit is -perfect- in all other regards. No screen lift. No flickering. No dead/stuck pixels. No issues.
[Nexus 7 General] yogi2010:
my 3G model has been great as well. it got the JOP40C update right out of the box, and that seemed fine, and now 4.2.1 is running fine. i did notice the pulldown menus were a bit finicky and would slide all the way back closed if i didn't do it right, but even that seems better on 4.2.1. really glad i purchased my first Nexus device!
[Nexus 7 General] phonic:
Yeah, I really don't like those bounce back menus. They are very finicky.
[Nexus 7 General] yogi2010:
yeah, seems like maybe they improved that on 4.2.1? not sure, but i just tried and couldn't even get them to misbehave, lol.
[Nexus 7 General] hayabusa1300cc:
Stock Rom and kernel, my nexus 7 has lots of lag since 4.2. I don't even use it anymore because of it, useless.

.:Sent from my Sprint Galaxy Note II:.
[Nexus 7 General] adamhlj:
I got the flickering on mine :(
[Nexus 7 General] cub0ne:
got my 4.2.1 update. im in the philippines.havent noticed any problem yet. im using a 32g wifi version
[Nexus 7 General] Explore3:
After updating to 4.2.1 on my 3g N4, I am having problems pulling in weak wifi signals. Anyone else have the same problem?
[Nexus 7 General] phonic:
This is a Nexus7 forum. Are you talking about your tablet or your N4 phone? If the latter, that belongs in the proper forum.
[Nexus 7 General] nikeman513:
He was just saying he's having similar problems on n4 and probably saying indirectly that its a software issue in 4.2.1...

Also he's asking if anyone is having this issue on this software with another device.
[Nexus 7 General] Scythe024:
I hated 4.2 but it had been a lot better with the 4.2.1 update
[Nexus 7 General] bstosnbata:
I get flickering when i watch netflix, and i randomly shutdowns :( you think its a problem with the update?
[Nexus 7 General] tytung2020:
Whoever designed the layout is damn stupid. Can't they see the flicker and correct it before pushing out the device?!
[Nexus 7 General] joefrog1996:
The update just fixes December in the people app.
[Nexus 7 General] phonic:
Wrong.
[Nexus 7 General] tbonezx11:
OK... second time my N7 wouldn't take the ota update'''first time, my bad. Build. Prop edit to LCD 160

Today I got it and switched LCD back to 213 and rebooted my 16gb unlocked and rooted (stock ROM) C6 model... And it failed because of a file called ... "Android.policy.odex" in the system/framework folder... Wth?

How do I find the original file? I don't know what program edited this file... Grrr and there is no .back of it.

I tried renaming but that didn't work annex n7 doesn't boot without it... Thoughts anyone?

Anybody want to post their file for me to copy?
[Nexus 7 General] Omar04:
I will try to grab it for you. At work now, off by 5:30AM (GMT - 4)
[Nexus 7 General] Binaryian:
4.2 update fails

I bought my N7 32Gb last night and its running 4.1.2. I have done nothing to the unit but getting it out of the box, setting up wifi and my google-account. I cleared the data on the framework, searched for update and it found 4.2 (~80Mb). The update is downloaded and verified and I got a box saying it want to reboot and install the update. I let it do just that and the updateprocess begins, but after a couple of seconds I got the Androidfellow laying down with the red triangle over. No other information. After a half a min or so the system reboots and I'm still on 4.1.2. I have tried factory reset, and dowloaded the update several times with no addded luck. I havent rooted it or changed DPI or anything. Suggestions?
[Nexus 7 General] GallStones:
I had a similar issue with some .apk and .odex filex belonging to apps I integrated in the ROM with Titanium Backup. To solve follow this guide.

PS: I had to download the 4.2 factory image from goo.im because Google pulled it from their servers.
[Nexus 7 General] jersonf:
Sorry to here that, I posted the similar thing but not a solution, my bad..... what you needed to do was to return to stock recovery, now I don't know how to do this manually so I used wugfresh dev toolkit, applied the update which worked.

(Please people don't have a go at me because of a toolkit, a quick search to do anything comes back to a toolkit, in fact to root a nexus 7 XDA has the 2nd Google entry.....to use a toolkit, manual instructions should be stickied in every forum. IMO ....although I do adb sideload manually)
[Nexus 7 General] rmagruder:
My honest recommendation is that if you haven't upgraded to 4.2 yet and you don't HAVE to have multiple user profiles, stay on 4.1. I have done EVERYTHING anyone has recommended to get back to a smooth consistent experience on 4.2/4.2.1 and just when I think it is there I am let down again. I don't even want to call it lag. A lag is a stutter. We are talking freezes that last from 2 seconds to a complete freeze necessitating a hard reboot. The Nexus 7 has now embarrassed me publicly several times when using it in the presence of someone else. I am tired of not being able to count on the tablet working from one minute to the next. And again, this is stock unrooted Android.

Stay on 4.1. Avoid 4.2 and 4.2.1 as well. Wait for Google to fix this mess of an update.
[Nexus 7 General] donb1:
I have gone back to 4.1.2 after updating to the crap they call 4.2.1. How can android os

use 65% of my battery even with every thing turned off or disabled that could affect it.
[Nexus 7 General] lscotte:
My experience has been no issues whatsoever on either 4.2 or 4.21. I use my n7 a ton and haven't seen any of the issues some folks report. Maybe you have some apps installed that are causing the problem, or interact with 4.2 in some weird way?
[Nexus 7 General] WasherUK:
I couldn't tell if I still had a custom recovery or not, don't think I did. There wasn't any fancy options in my recovery.

Anyway I used the Andriod SDK and ADB thingi to put it back to complete stock, at least now I know everything is stock :silly:
[Nexus 7 General] rmagruder:
I'd love to know how to diagnose that, then. I would also love to show you a youtube or something so you can see how bad it is.
[Nexus 7 General] khaytsus:
Tell us exactly what else was fixed, function - wise, and your source.

Not a change log from google, it's not clear exactly what is different between 4.2 and 4.2.1.
[Nexus 7 General] Cor-master:
I truly believe apps are the problem more than the rom itself
[Nexus 7 General] x3SNSDx3Tiffany:
hi new.andriod N7(4.2.1) user here.just to ask i installed flash and using dolphin browser but i dont seems to work.anyone got this problem?
[Nexus 7 General] jeetS:
Same here. Zero issues
[Nexus 7 General] just lou:
Flash doesn't work on Dolphin with Android 4.1 and higher.

---------- Post added at 12:17 AM ---------- Previous post was at 12:15 AM ----------

Considering the tiny size of the update file and the timing of its release, I doubt it fixed anything other than the December bug.
[Nexus 7 General] Push3r:
I think it too. It s louder!
[Nexus 7 General] veryjiggy:
For people reporting battery drain due to 'Google Services', etc, I would strongly recommend a factory reset. I was experiencing this issue after I updated to 4.2.1. 'Google Services' was consuming more than 20% of the battery. Tried various tweaks, but nothing worked. Finally had to factory reset, and it wasn't as painful as I had expected. All my apps downloaded automatically. And the battery drain sorted itself out.

I know one shouldn't have to resort to factory resets to get things working properly, but if it solves the battery drain for the time being, you might want to give it a shot.
[Nexus 7 General] wizgnome:
yes it does. works fine on 4.1.2 as long as you use Dolphin version 8.5.1, after that the dolphin developers decided to remove support for flash - complain to them to put it back.

As for 4.2.1, I have no intention of upgrading until all the issues are fixed. I see no reason to upgrade my Nexus 7 to loose features it already has. I have totally no use for multiple users support or fancy lock screens, and the updated Gmail works fine with 4.1
[Nexus 7 General] just lou:
Yes. It does work if you use an old version.
[Nexus 7 General] jonny68:
I'll just wait it out until all the issues are resolved in future updates not in any rush
[Nexus 7 General] robyr:
You guys are so blinded sometimes. There are VERY real Bluetooth stack issues, and that is unacceptable for a media device. We aren't making it up, and you apologists just look like tools.
[Nexus 7 General] fljoe:
Sorry guys .. tried to use the search function .. but did not come up with anything meaningful.

How do I disable the nag screen that asks me to update?

Okay searched again and found this in another thread;

Solution:

Step 1. Delete the update located in /cache/fota/ and then click the update notification prompt to install it, it will instantly fail and the notification will disappear.

Step 2. Disable Otacerts.zip located in /etc/security by renaming it to otacerts.zip.bak

Step 3. Disable FotaClient.apk and FWUpgrade.apk by renaming with .bak extensions located in /system/app/

Step 4. Reboot
[Nexus 7 General] PhillyCheez:
Not sure why people are so against factory resets... It's what fixes the majority of all electronic problems. Hell... Even Apple says to factory reset before going to the genius.

Factory Reset please.
[Nexus 7 General] rmagruder:
Maybe because so much is still not backed up (saved games, passwords and settings of applications, etc...) And if you downloaded a game like Bard's Tale you get to download that gigantic data file again. It's painful to reset. It shouldn't be necessary.

But regrettably it may be a necessary thing to do.
[Nexus 7 General] PhillyCheez:
Titanium backup. Easy as pie. You can factory reset all day long and that app will get you back where you were within 15 minutes.

Backing up your ROM to the last time it was stable and working perfectly...

Just root. You can solve so many issues by having root access. In the end it saves you time AND money if you had to return one to get a replacement.

Solutions can be so simple and rooting is so easy on the Nexus. It used to be kinda complicated but now it's just a click of a button....

Oh... And it's electronics... Factory Resets are always necessary.
[Nexus 7 General] rmagruder:
Well, the tablet is now unlocked, like my phone. Now, I've heard that 4.2 doesn't play well with superuser.....
[Nexus 7 General] khaytsus:
The only 'tool' here is the one assuming everyone uses Bluetooth music and everyone else must be an idiot or an "apologist" (blindly apologizing for something).

Clue up. Venting your frustration in this thread over and over isn't going to help.
[Nexus 7 General] robyr:
Like yours has? Stop poo-pooing peoples ACTUAL documented issues like it isn't a feature, that we PAID for by the way, that adds value to our device.
[Nexus 7 General] xips:
I can't use BT with lossless music due to it's inability to handle the bandwidth. So I don't use BT, I adjust and move on. It does not make my device useless.
[Nexus 7 General] chesterr:
Bluetooth issue is still there. and I don't know why people tell that it's fixed.

and I see lotta article's saying the same thing that it's fixed which is not
[Nexus 7 General] tytung2020:
not everyone rooted their device
[Nexus 7 General] GMF80:
Only issue for me is that Google Services uses too much battery. Is anything i can do about that?

Στάλθηκε από το Nexus 7 μου χρησιμοποιώντας Tapatalk 2
[Nexus 7 General] veryjiggy:
Yes, factory reset.
[Nexus 7 General] hija31:
+1
[Nexus 7 General] GMF80:
I read about that but i dont want to lose my data and game saves. Is there a way for a decent back up without having the device rooted?

Στάλθηκε από το Nexus 7 μου χρησιμοποιώντας Tapatalk 2
[Nexus 7 General] kennylovesyou:
Dead android guy after trying to update, rooted unlocked with wug.

Do I need to install cwm?
[Nexus 7 General] robyr:
Wow, way to deflect. You can't even use it for Skype at this point. Its a big farking issue, people. You can't stream video at ALL and expect to use a Bluetooth speaker, for instance.

Jesus Christ, guys, we bought a Nexus because there is supposed to be a long standing standard of this sort of thing NOT happening, as it does frequently when dealing with the OEM modified packages. THATS WHY WE USE THIS DEVICE.

To see Google basically say "deal with it *sunglasses*", and then to watch XDA (IE: power users) lap it up and act like if they don't personally use something that its just A-OK that documented problems are ignored, is something that is beyond comprehension.

You morons are the reason nothing gets done in the Android community. Look at my born-on date for my account. I have been here since the WinMo days, and even then I have never witnessed a crowd so eager to bury a very real and essentially service-crippling issue. You all are aware that Bluetooth Serial is also broken right? And that the standard relies on interoperability for the profiles to mean a goddamn thing?
[Nexus 7 General] PhillyCheez:
I'm sorry. But you do realize its the holiday season right? I imagine a lot of Google employees are on vacation....

I'm honestly surprised they even made a small patch in such short notice. And its highly likely the holiday season is the reason it was such a small patch. Having no December is just unacceptable on so many levels.

As such a long standing member of XDA you would know updates can go wrong. And out of ALL people here I assume you have rooted your device which means you have flashed ROMs which means you do know that its a COMMON issue when flashing (aka updating) a new ROM things don't roll over correctly which means you are aware a factory reset (aka wiping cache, dalvic cache, and data) can solve many issues people are having.

Out of all the device forums I've been a part of I found this Nexus forum feels way too entitled. I would feel bad if you guys didn't have a solution like an OTA was forced and root was impossible on your device... but you really don't have that issue. Just roll back... so you lose some settings. So what, its not the end of the world. Lesson learned and I guarantee when you get your next Nexus you will gain root minutes after opening the box so you NEVER have this issue ever again.
[Nexus 7 General] xips:
Welcome to the bleeding edge. Hostile insults are not helping your cause.
[Nexus 7 General] PMOttawa:
I've been looking here for a guide on properly doing the factory reset - what and in what order - but haven't found one.

Do you know of one? (Or can you lay out the steps) :fingers-crossed:
[Nexus 7 General] WasherUK:
This is to reset your nexus to complete stock like the day you bought it, so yes you will loose all data!

First follow the YouTube guide to install android sdk, adb, fastboot on computer.

https://www.youtube.com/watch?v=oaNM-lt_aHw&feature=youtube_gdata_player

Then follow this guide to reset your nexus.

Note the bootloader needs to be unlocked which once adb is set up as in guide below the first comand needs to be

Fastboot oem unlock

The guide doesn't mention this.

http://forums.androidcentral.com/ne...1477-guide-nexus-7-factory-image-restore.html

When you have finished

Fastboot oem lock. Will lock your bootloader again.

Nexus 7 Tapatalk 2
[Nexus 7 General] PMOttawa:
Thank you. This is what I was looking for.
[Nexus 7 General] PhillyCheez:
Or you can just use WUGs root tool kit.
[Nexus 7 General] PMOttawa:
That's true. Thanks.

But one of the reasons I bought into Android was to muck around with the equipment, so I might do it the other way.
[Nexus 7 General] PhillyCheez:
Respect!

Glad to hear it. :) it is too easy these days.
[Nexus 7 General] phillip1953:
For most people, that's what it fixed. For a small hand full there were two other 'fixes' per the change log.
[Nexus 7 General] ranzzit:
Got my update two days ago. Not sure what's changed apart from the fact that December is back. Let's see how it does in the long run.
[Nexus 7 General] phonic:
The "December" fix was simply the most public issue. However, as I indicated to the person who said that was the only fix, that's far from accurate. The 4.2.1 update patched about 200 files across the entire /system partition. If all they needed to do was fix a minor typo (as this is the likely cause of the December issue in the first place), it wouldn't have taken more then maybe the Contacts APK and a couple of supplemental ones that interact with it. But this update touched things across the board. A lot of bluetooth related files were modified for example. As I mentioned, ~200 all in all.

Is everything running perfectly? No, there are clearly some BT issues. But when you get people coming in here giving very differing and subjective points of view and claiming them as fact, all that does is confuse others. And when you have people make blatantly inaccurate statements, that just compounds the issue. Anyone who spent two minutes actually looking at the update would realize that it, while being small in size, had a much larger impact to the OS as a whole.
[Nexus 7 General] GMF80:
I think i fixed the google services issue without reset. I just closed all the running google services fro the app menu. That forced them to restart. Since then - about 15 hours - the power usage for google services is 3°/°...

Στάλθηκε από το Nexus 7 μου χρησιμοποιώντας Tapatalk 2
[Nexus 7 General] Notarzt23:
I have the battery drain problem with 4.2.1 do you guys think i should downgrade back to 4.1.2 or should i wait for a possible 4.2.2? Are there any clues that google is working on a fast solution for the still buggy 4.2.1?

Gesendet von meinem Nexus 7 mit Tapatalk 2
[Nexus 7 General] cub0ne:
got the update same day it was announced. 4.2.1 still works like a charm..
[Nexus 7 General] issak42:
I don't know what's all the fuss about bad battery life, I'm getting up to 44 hrs with 50% screen and Bluetooth always on and playing music trough it most of the day (its stuttering every now and then, but only when WiFi is active). I think battery is fantastic, since I'm used to charging my arc s every night. I really don't have an issue with plugging in my N7 too. And I think what was laggy with 4.2, 4.2.1 fixed.
[Nexus 7 General] jocke_lulle:
Do you think the n7 became sluggish with 4.2&4.2.1 when updating/installing apps? For me scrolling through home screens and opening apps lag a lot during updating/installing-phase. I can't remember that this happened before 4.2. Am I wrong?

From my n7
[Nexus 7 General] Cor-master:
I get buttery smoothness and lag at times too. Overall I'd say 4.2 is a beta at best and needs more work
[Nexus 7 General] Ayradyss:
I have this issue too.

I've been finding very mixed responses about this sort of thing, but have been wondering the same myself ever since the initial 4.2 update.

When I updated to 4.2, my Nexus 7 suddenly went from 'buttery smooth' to slow and sluggish -- particularly when scrolling through home screens and opening apps, as you describe. I wasn't able to find any real solution, but since I have no need for multi-user switching, I just reverted back to 4.1.2. Everything went right back to being fast and smooth again.

Sounds like I'll skip 4.2.1 as well. Just going to wait it out 'til it sounds like they've got a better release, I guess. (Or they add some feature I really want.)
[Nexus 7 General] BurnRubber90:
I have the same issue. Flashing 4.1.2 tomorrow , I can't stand a quad core device being sluggish ._.
[Nexus 7 General] jhford:
I have the 32gb/WiFi/hspa+ version. Apparently, I can't use any old update. Am I right?
[Nexus 7 General] ryanmfraser:
Correct. Has to be the 3G version. There are separate wifi only and 3G/wifi versions.
[Nexus 7 General] jocke_lulle:
No update in Sweden yet.

Sent from my Nexus 7