Ubuntu Touch (BQ Aquaris 4.5) - Does not boot after "[Volume Up] + [Power]" factory reset

[Antoine Denis]

Today, I tried to factory reset my BQ Aquaris 4.5 Ubuntu Touch Edition with the [Volume Up] + [Power] method but since then, the phone won't boot. It only displays the BQ logo and then a black screen (it is still on but it's displaying nothing). I tried to connect the phone with adb but it doesn't seem to be recognized by the computer.

[Daniel van Vugt (vanvugt)]

Sounds like the flashing process failed. Can you please try reflashing it using the same procedure again, but this time paste the full terminal output you see from 'ubuntu-device-flash' during the process.

[Antoine Denis (antoine-denis)]

The only output I have during the flashing process is what the phone can display, it says :

-- Wiping data...
Formatting /cache...
Data wipe complete.

[Daniel van Vugt (vanvugt)]

I've never tried that factory reset technique. Sounds like the OS isn't booting as a result anyway. So this bug is presently logged against the wrong projects...

[Pat McGowan (pat-mcgowan)]

Passing to BQ support for input

[Xavier Guillot (valeryan-24)]

Hi, did you get an answer from BQ support ?

I have the same issue.

Some weeks ago, I tried to install Prey on Ubuntu Touch BQ Aquaris E4.5 with this method :
http://wayneward.co.uk/ubuntu-touch/prey-on-ubuntu-touch/

It failed, but after that, even if I can't affirm it's correlated, updates apps were working but not OS : I got the notifications of OTA 33 available, if I ran the update, phone reboot, began installation, then continued the process, started... and I was still on the current version, unable to update to the last system.

So I decided to save my contacts + SMS / Calls, and did a factory reset, directly from the GUI Parameters menu.

Phone restarted, stayed long minutes / hours on black screen without anything written. Sometimes I make a long press on "Start" button, I well see the BQ logo on the white screen, like Antoine Denis described, but just after the complete empty black screen comes again, and nothing else...

I'm in big trouble now, as I used it with 2 lines, a professional one included.

Any help on this, something to do to get logs ?

Thanks in advance !

[Julia Palandri (julia-palandri)]

@Xavier, installing things following that method is known to break OS updates.

What method would be "a factory reset, directly from the GUI Parameters menu"? Please add more details

[Xavier Guillot (valeryan-24)]

Hi Julia,

Thanks for the answer. I didn't know for the update break, I'll be careful on the future and wait that some programs get a native Ubuntu Touch program - or forget them.

For the factory reset, I didn't do it via reboot "Power + Volume Up", but in the menu you have an icon for Parameters, and below the "Updates" row there is a command for doing a factory reset, one just for the launcher, the other for a complete reset.

That's what I choose, confirmed the message for all datas that will be lost, the phone restarted, reset process began but E4.5 never started completely on Ubuntu, and since I get only a dark screen

[Xavier Guillot (valeryan-24)]

I still have access to "Recovery menu" if I start with "Power + Volume Up", I can re-do Wipe cache partition, datas and factory reset, but again phone doesn't boot well : fastboot does nothing, normal boot stays on a black screen ever...

Is there a way to reinstall Ubuntu Touch via terminal or something else, or do I have to send my phone to BQ ?

Thanks !

[Pat McGowan (pat-mcgowan)]

@xavier if you use ubuntu desktop the instructions here can be used to reflash the device
https://developer.ubuntu.com/en/phone/devices/installing-ubuntu-for-devices/
and use the recovery.img for your device from
https://wiki.ubuntu.com/Touch/Devices

For example, go into recovery and do

ubuntu-device-flash touch --channel=ubuntu-touch/stable/bq-aquaris.en --bootstrap --recovery-image recovery-krillin.img

good luck.

[Xavier Guillot (valeryan-24)]

@PatMcGowan Thanks a lot for the answer and solution, it worked perfectly, I was just able to reinstall Ubuntu on the E4.5, then restart, restore contacts + messages, all seems to work.

Now, no more exotic manipulation with non-native programs !