[Guide] Flash 6.0, root, and no-forceencrypt from stock (easy method)

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gt43aw

Senior Member
Jan 4, 2012
133
35
Hope this helps.

1. Install android sdk and use the included install manager in the sdk to install the latest google usb drivers and platform tools (platform tools include fastboot and adb). Make sure adb and fastboot directory is in your Path variable as well.
2.Download latest stock image for Nexus 9 from google: https://developers.google.com/android/nexus/images?hl=en
3.Download latest twrp (here is the latest right now 10/6/2015): http://forum.xda-developers.com/nex...recovery-twrp-2-8-2-0-touch-recovery-t2944788
4.Download either a stock boot image with the no- forceencrypt flag set or a kernel with the no-forceencrypt flag set
a.I use the elementalx kernel (10/6/2015): http://forum.xda-developers.com/nexus-9/orig-development/kernel-elementalx-n9-0-02-alpha-t2931657
b.A stock kernel for the MRA58K build with the no-forceencrypt flag set can be found here (boot.zip): http://forum.xda-developers.com/nexus-9/general/marshmallow-factory-images-available-t3218290/page3
5.Download the latest supersu that works with nexus (beta now) : http://forum.xda-developers.com/apps/supersu/2014-09-02-supersu-v2-05-t2868133
6.Make sure you have usb debugging enabled and ability to unlock bootloader (android developer options menu on nexus).
7.Unzip the 6.0 stock image into a folder and open a command window in the folder.
8.Type the following:
a.adb reboot bootloader, wait until nexus boots into bootloader
b.fastboot oem unlock
c.flash-all, now wait a few minutes while the stock image flashes
9.At this point your nexus will reboot. Once you’re started, up you need to again enable usb debugging and the ability to unlock your bootloader in the android developer options menu. Now type the following to flash TWRP:
a.adb reboot bootloader, wait until nexus boots into bootloader
b.fastboot flash recovery twrp.img (or whatever the image filename is from the twrp download).
10.Important: now make sure you boot DIRECTLY into TWRP via the button combination (power and volume down), a fastboot command, or the fastboot menu. If you don’t TWRP will be deleted and you’ll need to reflash using the last step.
11.Once in TWRP, hit “cancel” when asked for the password and then erase/wipe data and make sure MTP is enabled (dig around the menus in TWRP, it’s all in there somewhere). This erases the encrypted partition and allows you to use adb to push files to your sdcard.
12.Now type adb push supersufile.zip /sdcard/supersufile.zip, make sure you’re typing from the correct directory.
13.Install supersu via the install menu on TWRP.
14.You now need to install a kernel with the no-forceencrypt flag set:
a.If you want to install a custom kernel (like elementalx), type adb push elementalxfile.zip /sdcard/elementalxfile.zip, make sure you’re typing from the correct directory. Then use TWRP to install the zip from your sdcard.
b.If you want to install the modified stock boot.img then unzip the boot.zip, boot back into the bootloader and type: fastboot flash boot boot.img. Make sure you do NOT boot back into the android OS before doing this step or you'll have to reflash twrp.
Reboot and you’re good to go.
 
Last edited:

Verttex

Senior Member
Oct 12, 2012
293
122
Dallas
Flash-all script doesn't work for everyone use these steps:
Code:
fastboot flash bootloader bootloader.img
fastboot reboot-bootloader
fastboot –w
fastboot flash boot boot.img [unencypted if wanted]
fastboot flash cache cache.img
fastboot flash recovery recovery.img [twrp usually]
fastboot flash system system.img
fastboot flash vendor vendor.img
 

Fda979

New member
Jul 3, 2015
3
1
typo

excellent guide, just a small typo on 9.b, "fastboot (not flashboot) flash recovery twrp.img"
Thank you
 
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Reactions: gt43aw

gt43aw

Senior Member
Jan 4, 2012
133
35
You can't just flash latest stable SuperSU, you need SuperSU 2.50+ beta and a modified boot.img. Instructions here: http://forum.xda-developers.com/apps/supersu/wip-android-6-0-marshmellow-t3219344

I flashed the latest supersu and the latest elementalx kernel.... been running it since about an hour after elementalx kernel for 6.0 final was posted....... everything seems to be working fine. Are you sure? Maybe i'm having no problems with supersu because i'm using elementalx? let me know the reason, i'll check it out on my tablet and see if i can reproduce, and if so i'll modify the guide. But after about a day and a half use, i've had no issues. thx for quality checking.

gt
 
Last edited:

tdct12

Senior Member
Mar 6, 2011
211
58
Am I missing something?

can I not just do a wipe and flash the img with twrp like a custom rom? Edit: Got it working. For me it was much easier to use this as opposed to the android sdk, because it would not detect my version of java. From there I followed your instructions, mostly. Putting the files you posted inside the directory the mini adb client allowed the flash-all command to work. From there I followed chainfire's instructions on the latest SU. Everything seems to be running smoothly. Thanks for the initiative, OP :good:
 
Last edited:

dkryder

Senior Member
Sep 26, 2013
469
113
Google Pixel 3a
Google Pixel 5a
i used supersu 2.52 due to it seems be be required by the guides and i get the notification that the binary needs to be updated. i have not done that yet. is updating the binary something i should try to do? or, if not is it ok to turn off notifications from supersu? thanks.
 

madbat99

Senior Member
Mar 1, 2014
5,538
3,290
i used supersu 2.52 due to it seems be be required by the guides and i get the notification that the binary needs to be updated. i have not done that yet. is updating the binary something i should try to do? or, if not is it ok to turn off notifications from supersu? thanks.

Of course update binaries. Choose normal method.
 

gh.rohit

Inactive Recognized Developer
Oct 18, 2011
6,344
4,065
Mumbai
www.rgui.net
Flash-all script doesn't work for everyone use these steps:
Code:
fastboot flash bootloader bootloader.img
fastboot reboot-bootloader
fastboot –w
fastboot flash boot boot.img [unencypted if wanted]
fastboot flash cache cache.img
fastboot flash recovery recovery.img [twrp usually]
fastboot flash system system.img
fastboot flash vendor vendor.img
I was facing same issue, then updated fastboot(android-sdk) and flash-all script worked fine for me.
 

Verttex

Senior Member
Oct 12, 2012
293
122
Dallas
That should work as well. That sequence of commands should work with any fastboot version. Just make sure to flash the vendor.img, some scripts don't use that as it's only used for the Nexus 9.
 

cyraxx84

Senior Member
Jul 5, 2012
843
254
Why so complicated? I just installed @wug's NRT toolkit(on a Venue8 pro) and it did everything for me. Now im on rooted stock 6.0 with disabled encryption. Only thing i needed to do is to flash latest super su beta 2.52, that's it.
 

caolfin

Senior Member
Feb 9, 2012
133
16
Flash-all script doesn't work for everyone use these steps:
Code:
fastboot flash bootloader bootloader.img
fastboot reboot-bootloader
fastboot –w
fastboot flash boot boot.img [unencypted if wanted]
fastboot flash cache cache.img
fastboot flash recovery recovery.img [twrp usually]
fastboot flash system system.img
fastboot flash vendor vendor.img

i did all this, no worries and no error messages
i did fastboot reboot
now I am in a weird loop of
- google screen
- your device is corrupt
- google screen
- twrp (it flashes quite quickly, error messages on mounting everything and last line says something about renaming and something about stock rom)
loop

any ideas ?
 

Verttex

Senior Member
Oct 12, 2012
293
122
Dallas
Did you make sure to flash vendor.img?

You might try flashing the regular recovery first and then boot in, turn on oem unlock and adb, and then flash twrp and modified boot.img, then reboot into twrp (don't boot normally or it will erase twrp) and flash SuperSU.
 
  • Like
Reactions: caolfin

caolfin

Senior Member
Feb 9, 2012
133
16
Did you make sure to flash vendor.img?

You might try flashing the regular recovery first and then boot in, turn on oem unlock and adb, and then flash twrp and modified boot.img, then reboot into twrp (don't boot normally or it will erase twrp) and flash SuperSU.

yes, that seems to have been it
flashing TWRP seems to have been the problem so I have left everything as stock until root etc works on the stovk kernel

thanks for your help
 

gadget2023

Member
Dec 25, 2015
10
0
All of these steps worked for me, but my battery doesn't charge right I don't think. It says battery life is at 3,745%. It runs out somewhere around 3,000%. Any ideas on how to fix that?
 

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  • 12
    Hope this helps.

    1. Install android sdk and use the included install manager in the sdk to install the latest google usb drivers and platform tools (platform tools include fastboot and adb). Make sure adb and fastboot directory is in your Path variable as well.
    2.Download latest stock image for Nexus 9 from google: https://developers.google.com/android/nexus/images?hl=en
    3.Download latest twrp (here is the latest right now 10/6/2015): http://forum.xda-developers.com/nex...recovery-twrp-2-8-2-0-touch-recovery-t2944788
    4.Download either a stock boot image with the no- forceencrypt flag set or a kernel with the no-forceencrypt flag set
    a.I use the elementalx kernel (10/6/2015): http://forum.xda-developers.com/nexus-9/orig-development/kernel-elementalx-n9-0-02-alpha-t2931657
    b.A stock kernel for the MRA58K build with the no-forceencrypt flag set can be found here (boot.zip): http://forum.xda-developers.com/nexus-9/general/marshmallow-factory-images-available-t3218290/page3
    5.Download the latest supersu that works with nexus (beta now) : http://forum.xda-developers.com/apps/supersu/2014-09-02-supersu-v2-05-t2868133
    6.Make sure you have usb debugging enabled and ability to unlock bootloader (android developer options menu on nexus).
    7.Unzip the 6.0 stock image into a folder and open a command window in the folder.
    8.Type the following:
    a.adb reboot bootloader, wait until nexus boots into bootloader
    b.fastboot oem unlock
    c.flash-all, now wait a few minutes while the stock image flashes
    9.At this point your nexus will reboot. Once you’re started, up you need to again enable usb debugging and the ability to unlock your bootloader in the android developer options menu. Now type the following to flash TWRP:
    a.adb reboot bootloader, wait until nexus boots into bootloader
    b.fastboot flash recovery twrp.img (or whatever the image filename is from the twrp download).
    10.Important: now make sure you boot DIRECTLY into TWRP via the button combination (power and volume down), a fastboot command, or the fastboot menu. If you don’t TWRP will be deleted and you’ll need to reflash using the last step.
    11.Once in TWRP, hit “cancel” when asked for the password and then erase/wipe data and make sure MTP is enabled (dig around the menus in TWRP, it’s all in there somewhere). This erases the encrypted partition and allows you to use adb to push files to your sdcard.
    12.Now type adb push supersufile.zip /sdcard/supersufile.zip, make sure you’re typing from the correct directory.
    13.Install supersu via the install menu on TWRP.
    14.You now need to install a kernel with the no-forceencrypt flag set:
    a.If you want to install a custom kernel (like elementalx), type adb push elementalxfile.zip /sdcard/elementalxfile.zip, make sure you’re typing from the correct directory. Then use TWRP to install the zip from your sdcard.
    b.If you want to install the modified stock boot.img then unzip the boot.zip, boot back into the bootloader and type: fastboot flash boot boot.img. Make sure you do NOT boot back into the android OS before doing this step or you'll have to reflash twrp.
    Reboot and you’re good to go.
    3
    Flash-all script doesn't work for everyone use these steps:
    Code:
    fastboot flash bootloader bootloader.img
    fastboot reboot-bootloader
    fastboot –w
    fastboot flash boot boot.img [unencypted if wanted]
    fastboot flash cache cache.img
    fastboot flash recovery recovery.img [twrp usually]
    fastboot flash system system.img
    fastboot flash vendor vendor.img
    1
    typo

    excellent guide, just a small typo on 9.b, "fastboot (not flashboot) flash recovery twrp.img"
    Thank you
    1
    You can't just flash latest stable SuperSU, you need SuperSU 2.50+ beta and a modified boot.img. Instructions here: http://forum.xda-developers.com/apps/supersu/wip-android-6-0-marshmellow-t3219344
    1
    Did you make sure to flash vendor.img?

    You might try flashing the regular recovery first and then boot in, turn on oem unlock and adb, and then flash twrp and modified boot.img, then reboot into twrp (don't boot normally or it will erase twrp) and flash SuperSU.