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I used the wrong channel for my Nexus 4; How do I upgrade it, and what channel do I use?

Backstory:

  • Followed this tutorial: https://developer.ubuntu.com/en/start/ubuntu-for-devices/image-channels/

  • Have Nexus 4, so I chose the following option:

    Nexus 4 | Track the latest development | ubuntu-touch/devel/ubuntu

  • ubuntu-touch/devel/ubuntu turned out to be a very old image.

  • Popey advised to use ubuntu-touch/rc/bq-aquaris.en for Nexus 4

  • Trying to upgrade, ran into a few problems.

Questions

  • Do I have to completely reflash my phone?

  • Do I run the commands from phone, or computer?

  • What commands do I use?

  • What do the following errors mean?

-

`2015/10/04 09:01:21 Start pushing /home/akiva/.cache/ubuntuimages/ubuntu-touch/rc/bq-aquaris.en/mako/version-25.tar.xz to device`

`2015/10/04 09:01:21 error pushing:`

and 

`2015/10/04 08:48:24 Expecting the device to expose an adb interface...`

`device cannot be detected over adb`
Anon
  • 12,339

2 Answers2

3

Solution

  • Do I have to completely reflash my phone?

No. Once you have ubuntu on there, you can simply update.

  • Do I run the commands from phone, or computer?

Computer, with phone plugged in.

  • What command do I use?

Boot up phone up normally, and run this command from your computer:

adb reboot recovery

Wait until the phone gets into recovery mode, and run this command:

ubuntu-device-flash touch --channel=ubuntu-touch/rc/bq-aquaris.en

Possible Errors

$ubuntu-device-flash touch --channel=ubuntu-touch/rc/bq-aquaris.en
2015/10/04 09:01:21 Start pushing /home/akiva/.cache/ubuntuimages/ubuntu-touch/rc/bq-aquaris.en/mako/version-25.tar.xz to device
2015/10/04 09:01:21 error pushing:

This is because you are logged into the phone. You need to log into recovery mode with the command: adb reboot recovery

$ubuntu-device-flash touch --channel=ubuntu-touch/rc/bq-aquaris.en 
2015/10/04 08:48:24 Expecting the device to expose an adb interface...
device cannot be detected over adb

You are probably in the Bootloader instead of recovery mode. You won't be able to connect to adb there. If not this, you could also try the command:

adb wait-for-device

and try plugging it in until it is noticed.

Community
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Anon
  • 12,339
0

If your phone can boot into Ubuntu, just enter the developer mode by selecting 'settings>About>Developer Mode' and then connect your device to your PC and run 'ubuntu-device-flash' as described by Akiva.

If you get errors try running 'ubuntu-device-flash --clear-cache touch'.

Or check if your device is really connected with 'adb devices'. This should list all connected devices. with

-- I have just now no PC here, so all commands are just written by mind. Gonna check this tomorrow, soon.

eDeviser
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