Success!
I hadn't installed Lollipop on my 2012 Nexus 7 (Grouper) because of all the problems I read about but I decided to try it through using Multiboot and keeping KK 4.4.4 too. I now have Lollipop running, including most of the apps I have running in KK, without any apparent problems. I initially installed Lollipop as the secondary ROM. After Lollipop is installed as the secondary ROM, it takes a while for the boot process to complete the first time, it seems to take forever. In order to unlock and root Lollipop I had to make it the primary ROM and used Nexus Root Toolkit running on Windows 8.1 to unlock and root Lollipop just as I had with KK. Now I can alternate from KK to Lollipop and vice-versa.
This is for Nexus 4 but works the same for Nexus 7 if the correct Lollipop version is used:
http://forum.xda-developers.com/nexus-4/general/multiboot-android-lollipop-lrx21t-t2945890
This is from the Nexus 7 forum at XDA Developers:
http://forum.xda-developers.com/showthread.php?t=2011403
Zipped Stock ROMs to use for Lollipop (Use lrx21p_grouper.zip for the 2012 Nexus 7 (Grouper):
https://s.basketbuild.com/devs/Tassadar/stock_zips/
Hi
Did yolu installed also kernel for lollipop? Or are you using KitKat kernel? I tried to install as you described but lollipop always directs me to recovery.
asking same qeustions as hugo_bjk , before i updated to LOL' from 4.4.4 i tried to multirom various 5.0 roms but none worked all went to recovery as hugo_bjk says, im now 5.0 and performance for me is better then 4.4.4 anyways and now i do have kali nethunter installed via multirom ontop of paranoid saber remix:laugh:
I also installed 5.0 kernel but no go. Still directs me to recovery.
success
Âfter swapping internal and lollipop roms lollipop boots with success.
I've been away for a few days and just read the postings since I did the OP. I installed a Lollipop kernel with the kexec-hardboot patch and made Lollipop primary. Lollipop is working well, so far.
http://forum.xda-developers.com/showthread.php?t=2011403
Related
Android 5.0 (Lollipop) Bootloader and KitKat Compatibility
Everyone wants Lollipop, however it is worth considering some of the possible consequences of upgrading via OTA update.
Bootloader:
A new Bootloader (BL) will almost certainly be included in the OTA update. It is also very likely no KitKat Kernel, stock or custom will be able to boot properly with the 5.0 BL. Perhaps the Kernel DEVs can find a workaround.
Root: (ETA: Unknown)
It may take some time to gain root access on Lolipop as on other devices this has required a custom Kernel. A custom kernel itself may require kernel sources to be released - something that has taken weeks / months in the past.
Xposed Framework:
Developer has said he will wait for CyanogenMod based on Lollipop before properly starting development of an ART version of Xposed. CM12 may take a few weeks to release. Expect to do without Xposed for at least a month, probably longer since root is also required (see above.)
Custom Recovery:
This has not been an issue before, but it is always possible a new Bootloader could break compatibility with existing Custom Recoveries. Obviously, you would not be able to restore a CWM / TWRP backup without a functional custom recovery; but even then, it is unlikely you will be able to boot your KitKat backup.
Custom ROMs:
This is another area that could be affected by a new Bootloader. It is unknown if existing custom ROMs will require new Kernels / system changes in order to work with the new BL - something that could take days, weeks or months.
Performance:
Currently the performance difference between KitKat and Lollipop is unknown. If the first release of Lollipop for Android One has performance issues, you may be unable to revert back to stock KitKat.Possible solution:
Wait for a flashable zip [NOT OTA Update zip] of Stock Android One Lollipop ROM - this would mean your Bootloader remains at it's current version and potentially allowing you to change 'back and forth' between Stock KitKat and Stock Lollipop. However, it is currently unknown if the newer BL is a requirement for Android 5.0 Kernels.
This is taken from the Moto G thread and all credits goes to @lost101.The sole motive of this is to create awareness about the new bootloader included in 5.0
Thanks For The Info @DC07 :highfive:
Thanks For The Information Bruda !!
This thing is only for device like motorola, samsung etc.. As I never saw same thing for nexus.. Motorola does not allow to downgrade so they update bootloader in every android version update.. I dont think it will be same for sprout
Let it arrive ,no point in discussions on thongs that are not confirmed
Sent from my A1 using XDA Free mobile app
coolkoushik07 said:
This thing is only for device like motorola, samsung etc.. As I never saw same thing for nexus.. Motorola does not allow to downgrade so they update bootloader in every android version update.. I dont think it will be same for sprout
Click to expand...
Click to collapse
Nope. The bootloader was updated on my nexus 7 flo for the 4.4.2 OTA. Since this update is much bigger I think we'll have a bootloader update too.
littleromeo said:
Nope. The bootloader was updated on my nexus 7 flo for the 4.4.2 OTA. Since this update is much bigger I think we'll have a bootloader update too.
Click to expand...
Click to collapse
Does it stop u from downgrading to any previous version?
Sent from my Xperia Z1 Compact
yes..
coolkoushik07 said:
Does it stop u from downgrading to any previous version?
Sent from my Xperia Z1 Compact
Click to expand...
Click to collapse
yes... once u update boot loader , you can never even think of downgrading ..
experience :/
startracker said:
Is varun working with lollipop
Sent from my A1 using XDA Free mobile app
Click to expand...
Click to collapse
Yes,according to the ss posted in the fb group.But this doesn't mean everyone starts spamming his pm.
Let him take his time.This will make our lollipops taste more sweet
doubts about lollipop arise
After installing Xposed on my Cm 12.1 ( 5.1.1 ) whenever i do an normal reboot it showing ( Optimising App xxx of 122 ) It takes about half and hour to boot up the device. please tell any method to fix this , I'm very pissed .
I have the same problem, any solutions?
I got sick of it and downgraded to a Custom ROM based off of CM12. The ROM I'm using on my Galaxy Note 4 is Pac-ROM, I'm not here to advertise ROMs but I'm suggesting downgrading to CM12 again or perhaps finding other ROMs that are based off of Lollipop 5.0.x.
Try a pure AOSP or any other non-CM 5.1.1 ROM (but not MIUI). CM is too far from official Android to be fully compatible.
Getting the same problem with temasek cm 12.1 on my Oneplus One. It doesn't do it all the time but I'll say about 70% of the time it does it.
Sent from my Oneplus One
Try vanir ROM, a strip down version of cm12.1. It takes so long because it has to do with the ROM not able to pick up the mobile signal. I think install a log cat animation script by chainfire from the okay store will speed up the boot process, plus it looks cool.
Sent from my LG-E980 with Tapatalk.
Try to install the latest unofficial Xposed for 5.1 by GravityBox's author. He shared it yday.
Try to install the latest unofficial Xposed for 5.1 by GravityBox's author. He shared it yday.
Click to expand...
Click to collapse
Where?
Would it be possible to try out Marshmallow using Multirom? My current ROM (Resurrection Remix) runs flawlessly so I just want to try M before I run it exclusively.
enginuity2 said:
Would it be possible to try out Marshmallow using Multirom? My current ROM (Resurrection Remix) runs flawlessly so I just want to try M before I run it exclusively.
Click to expand...
Click to collapse
I think it should work. Always make a backup first as usual though.
Would flashing M with Multirom force the encryption I currently have disabled?
tried to flash beta marshmallow (AOSParadox-BETA-20151020-bacon.zip) on my oneplus using multirom as secondary rom.. not working..... it says incomplete rom
Tried another build (aosp_bacon-ota-eng.hamster-20151015.zip) as secondary rom using multirom n get same result (incomplete rom).... is there any way to flash marshmallow as secondary?
BrokenOs for ls990 is the only MM rom I have gotten to boot as secondary. Running XenonHd 5.1 as primary.
Hi,
I have posted a "fixed" Multirom a while ago:
http://forum.xda-developers.com/nexus-6/orig-development/multirom-t3074529/post63831283#post63831283
You can use M roms with it as secondary. The only problem is that the new SuperSU version don't like to be flashed to a secondary rom. If you really want to flash a new SSU (with or without systemless root) you will have to flash it to primary slot and swap it to secondary afterwards. If you are fine with an older versiob of SSU then use version 2.52.
If you install the Multirom apk it will tell you that there's a newer version of Mulltirom (when using this fix of course). You must ignore that as this fix is not 'official'.
so i got my old s5 back today on of3 rooted
running twi5ted lollipop v7
what r my options for twrp and newer roms rooted only ofcoarse?
The AT&T S5 is still bootloader locked, so you can't use TWRP, and you can go as high as Lollipop with custom roms.
I've been using AptOS for the past months, it is basically a sort of AOSP Lollipop for the S5. It is rooted, and you can install Xposed on it.
It has some issues, but it is overall quite stable and a nice change from TouchWiz.
Now it is possible to upgrade to Android 6.0.1
Hi
I've modify my asus me176c kernel, rollingback to kitkat from lollipop like in this xda post: https://forum.xda-developers.com/memo-pad-7/general/how-to-rollback-lollipop-to-kitkat-t3422498
I want to install lolllipop again (for app's compability resasons) but i can't update the device..
It's possible to build a 4.4.2 rom that includes kernel "install" and then finally update to lollipop?
Thanks in advance!