Lollipop 5.1.1 stock image is up !

fortissimo

Senior Member
Jun 10, 2007
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I found 5.1 official stock quite laggy on mine, coming from 4.4.4 official stock. So I wonder if there is a silver lining on this 5.1.1 or not. I won't hold my breath, but surprised that Google is willing to upgrade it despite it doesn't perform very well (similar to my iPad 1st gen taking 5.1.1, ironically, now same version number).
 
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iBolski

Senior Member
Nov 30, 2010
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Columbus, OH
I found 5.1 official stock quite laggy on mine, coming from 4.4.4 official stock. So I wonder if there is a silver lining on this 5.1.1 or not. I won't hold my breath, but surprised that Google is willing to upgrade it despite it doesn't perform very well (similar to my iPad 1st gen taking 5.1.1, ironically, now same version number).
I believe this was to fix the memory leak that was still present.

Installed via fastboot and rebooting now. Will update when I know more.

I do know that removing Facebook appears to help with performance, but there was still a performance issue on 5.1 that required a reboot at times.

I just think that this Nexus 7 (2012) is too old for LP.
 

gsmyth

Senior Member
Dec 16, 2010
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I believe this was to fix the memory leak that was still present.

Installed via fastboot and rebooting now. Will update when I know more.

I do know that removing Facebook appears to help with performance, but there was still a performance issue on 5.1 that required a reboot at times.

I just think that this Nexus 7 (2012) is too old for LP.
I think the memory leak still hasn't been fixed yet, or it seems Google have found a fix but it STILL hasn't been released so it won't be in the 5.1.1 update.

https://code.google.com/p/android/issues/detail?id=170151&colspec=ID%20Type%20Status%20Owner%20Summary%20Stars
 

brandub

Senior Member
Jul 21, 2012
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I think the memory leak still hasn't been fixed yet, or it seems Google have found a fix but it STILL hasn't been released so it won't be in the 5.1.1 update.

https://code.google.com/p/android/issues/detail?id=170151&colspec=ID%20Type%20Status%20Owner%20Summary%20Stars
thats for the Nexus 5 though, I havent seen anything for the N7 yet.

2 of mine are bricked (one APX mode, the other corrupted emmc but seems to "work" - sort of - with all F2FS rom), I bought a board for $40 to replace one of them but the digitizer clamp and pins flaked off on contact when trying to reassemble it so Im reluctant to do anything with it without touch capability. its just going to sit there with my blutooth mouse for kitchen-netflix for now. Im thinking of selling them all "as is" but Im curious if this update pans out, I might keep the touchless one.
 

JerryPi

Senior Member
Aug 28, 2010
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How can i check wich partition are f2fs? i used a zip from this thread to convert http://forum.xda-developers.com/showthread.php?t=2678140
With the newer versions of twrp that zip is really not necessary to convert your partitions to a different file system.

To check and change format of your partitions go in your twrp recovery under wipe -advanced wipe - choose your partition - then repair or change your file system - there it says wich file system you are using and you can change it accordingly.
 

C0derbear

Senior Member
Nov 6, 2012
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Two days in, 5.1.1 clearly better than 5.1 on my 32gb n7 2012 wifi.

Stock load/kernel/ext4 filesystems maintained, factory reset, full device restore/reinstall from cloud backup, rooted via TWRP, updated with SuperSU.

Nova Launcher, I just prefer it, no functional reason over stock Launcher.

Kindle app runs noticeably better, heck the Zinio reader app seems to work well too.

Google sheets/docs/presentation seems good.

TapaTalk Pro works well, as does Feedly. Notably less latency on network i/o and page transitions.

Facebook app doesn't seem to bring it down, even without any services disabled.

Haven't tried Chrome yet, and need to reload my music/video content to see how Rocket Player does.

disclaimer: I've taken to running "Trimmer (fstrim)" on an automatic schedule, daily, to keep nand free block lists healthy. That probably helps. I was doing that on 5.1 though.

If this keeps up I'd consider it a completely reasonable upgrade from KK.
 
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