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I tried to flash my just received Meizu MX4 Ubuntu edition to the rc-proposed channel by using

ubuntu-device-flash touch --channel ubuntu-touch/rc-proposed/meizu.en

but I got the unable to enter into recovery error.

Anyone to provide the recovery.img as for the BQ Phone?

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  • I should add to anyone reading this, that enabling developer mode on your device makes things much easier. Flipping that switch instantly enabled me to push the updates over ADB/ubuntu-device-flash while the phone was still booted into the OS.
    – W Mauldin
    Aug 2, 2016 at 19:34

4 Answers 4

Reset to default
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Connect your phone to Ubuntu desktop

sudo apt-get install phablet-tools

Unlock phone (you need also developer mode on)

phablet-shell

Inside shell

sudo system-image-cli --switch ubuntu-touch/rc-proposed/meizu.en

After automatic download and reboot you will have the new channel. Be warned this channel is not for normal usage.

Update (2017-10): As Canonical dropped development, one may consider switching to more recent build channel from UBports. Command example below. Run it on Ubuntu host where you have connected your Ubuntu phone.

ubuntu-device-flash --server=http://system-image.ubports.com touch --channel=15.04/rc
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  • 1
    Any website which can explain all this plus some more depth?
    – M. Ahmad Zafar
    Oct 12, 2015 at 5:03
  • Note that I had to add --build 0 to the end of that command to force the upgrade to the other channel. Without it, the channel remained unchanged.
    – David Planella
    Oct 31, 2015 at 8:05
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works great, I am a linux noob, flashed android several years. don't want to compromise your perfect solution just like to edit it(for noobs like me)

this is what I did:

  • (ubuntu pc) Open terminal and plug in your phone(with developers mode on)and type: wget http://people.canonical.com/~alextu/tangxi/recovery/recovery.img
  • (on phone) hold power and vol- until the phone reboots (no normal screen display)
  • (pc) now type in terminal:fastboot flash recovery recovery.img

wait until it's finished

  • (phone) hold power and vol+ to boot in recovery (flash) mode
  • (pc) type the following command and replace xxxxx for stable (stable) or rc-proposed (release-candidate): ubuntu-device-flash touch --device arale --channel ubuntu-touch/xxxxx/meizu.en

now just wait

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stable : 

wget http://people.canonical.com/~alextu/tangxi/recovery/recovery.img
fastboot flash recovery recovery.img
ubuntu-device-flash touch --device arale --channel ubuntu-touch/stable/meizu.en

release-candidate:

wget http://people.canonical.com/~alextu/tangxi/recovery/recovery.img
fastboot flash recovery recovery.img
ubuntu-device-flash touch --device arale --channel ubuntu-touch/rc-proposed/meizu.en
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0

If you got that far just do a factory reset on the phone, it will reboot using the recovery files you just copied.

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