[Ubuntu Touch Q&A, Help & Troubleshooting] login721:
Hello.

I need help with install ubuntu touch on nexus 72013(flo).After unlock bootloader and flash image, the device stuck on boot screen .I tried both stable and rc channel but i got the same problem.

Thanks in advance !

Sorry for my bad English.

https://drive.google.com/file/d/1w5M3mEuMc5CvdTW_vdJhiUGISGvux3ra/view?usp=sharing

this is log

Unlock boot loader

chip@UbuntuNeko:~$ adb devices
List of devices attached
* daemon not running. starting it now on port 5037 *
* daemon started successfully *
0736dfd0	unauthorized

chip@UbuntuNeko:~$ adb devices
List of devices attached
0736dfd0	device

chip@UbuntuNeko:~$ adb reboot bootloader
chip@UbuntuNeko:~$ sudo fastboot oem unlock
[sudo] password for chip:
...
(bootloader) Unlocking bootloader...
(bootloader) erasing userdata...
(bootloader) erasing userdata done
(bootloader) erasing cache...
(bootloader) erasing cache done
(bootloader) Unlocking bootloader done!
OKAY [ 11.612s]
finished. total time: 11.612s
chip@UbuntuNeko:~$

Install image

chip@UbuntuNeko:~$ ubuntu-device-flash touch --channel=ubuntu-touch/rc/ubuntu --bootstrap
2018/04/16 11:45:41 Expecting the device to be in the bootloader... waiting
2018/04/16 11:45:41 Device is |flo|
2018/04/16 11:45:42 Flashing version 45 from ubuntu-touch/rc/ubuntu channel and server https://system-image.ubuntu.com to device flo
20.41 MB / 20.41 MB [=======================================] 100.00 % 3.25 MB/s
55.05 MB / 55.05 MB [=======================================] 100.00 % 1.92 MB/s
316.54 MB / 316.54 MB [=====================================] 100.00 % 2.83 MB/s
/home/chip/.cache/ubuntuimages/gpg/image-master.tar.xz
/home/chip/.cache/ubuntuimages/gpg/image-signing.tar.xz
/home/chip/.cache/ubuntuimages/ubuntu-touch/rc/ubuntu/flo/version-45.tar.xz
/home/chip/.cache/ubuntuimages/pool/custom-2369a9a834acd3c434fec12da7c59560797532e5a08f046fbe5b02857a8e4424.tar.xz
/home/chip/.cache/ubuntuimages/pool/device-1d88c67d0daa4d0403ebf3bdab8f0ac5c27f3cda3d4b45302ba4a021ec0f1a73.tar.xz
2018/04/16 11:47:58 Start pushing /home/chip/.cache/ubuntuimages/gpg/image-master.tar.xz to device
2018/04/16 11:47:58 Start pushing /home/chip/.cache/ubuntuimages/gpg/image-signing.tar.xz to device
2018/04/16 11:47:58 Start pushing /home/chip/.cache/ubuntuimages/ubuntu-touch/rc/ubuntu/flo/version-45.tar.xz to device
2018/04/16 11:47:58 Done pushing /home/chip/.cache/ubuntuimages/ubuntu-touch/rc/ubuntu/flo/version-45.tar.xz to device
2018/04/16 11:47:58 Done pushing /home/chip/.cache/ubuntuimages/gpg/image-master.tar.xz to device
2018/04/16 11:47:58 Done pushing /home/chip/.cache/ubuntuimages/gpg/image-signing.tar.xz to device
2018/04/16 11:47:58 Start pushing /home/chip/.cache/ubuntuimages/pool/custom-2369a9a834acd3c434fec12da7c59560797532e5a08f046fbe5b02857a8e4424.tar.xz to device
2018/04/16 11:47:58 Start pushing /home/chip/.cache/ubuntuimages/pool/device-1d88c67d0daa4d0403ebf3bdab8f0ac5c27f3cda3d4b45302ba4a021ec0f1a73.tar.xz to device
2018/04/16 11:47:58 Start pushing /home/chip/.cache/ubuntuimages/pool/ubuntu-d8d097dfc125dc91455594656762421ba6ac8fbf19524bfa07db1a879d0adee1.tar.xz to device
2018/04/16 11:48:08 Done pushing /home/chip/.cache/ubuntuimages/pool/custom-2369a9a834acd3c434fec12da7c59560797532e5a08f046fbe5b02857a8e4424.tar.xz to device
2018/04/16 11:48:19 Done pushing /home/chip/.cache/ubuntuimages/pool/device-1d88c67d0daa4d0403ebf3bdab8f0ac5c27f3cda3d4b45302ba4a021ec0f1a73.tar.xz to device
2018/04/16 11:49:03 Done pushing /home/chip/.cache/ubuntuimages/pool/ubuntu-d8d097dfc125dc91455594656762421ba6ac8fbf19524bfa07db1a879d0adee1.tar.xz to device
2018/04/16 11:49:03 Created ubuntu_command: /home/chip/.cache/ubuntuimages/ubuntu_commands200797069
2018/04/16 11:49:03 Rebooting into recovery to flash
chip@UbuntuNeko:~$

UPDATE ----------------------------------

I found the solution.The image file from https://system-image.ubuntu.com not working.Use image file http://system-image.ubports.com slove the problem.

$ sudo ubuntu-device-flash --server=http://system-image.ubports.com touch --channel=ubports-touch/15.04/devel --device=flo --bootstrap --wipe

here is the guide to install ubuntu on nexus7 2012/2013

https://github.com/ChipTechno/2018-Guide-to-Install-Ubuntu-desktop-13.04-on-Nexus-7-2012-and-Ubuntu-touch-15.04-on-Nexus-7-2013