found this one, you need to register to download,
this may be of use to someone
https://www.needrom.com/download/stock-mod-bq-m10fhd-freezerfhd/

Lots of us out here watching and waiting, for,daily users , being shipped , keep up the good work

Can you put an earlier Ubuntu on a thumb drive and use that is to install, instead of messing your main os about.

the roms are on bq website, android just download the one you want, if you want ubuntu you need the device serial no.
i hear there are no more roms for this model
Do not use the format all setting on the sptool, or you will be reentering the wifi password everytime you turn it off,
dont ask me how i know this .

my m10 fhd the exsdcard did not show up until ,you hit the menu and enter your pin for full access

If you look at the left lower corner of flash_tool pic, it shows no chip info, so you did not have adb connection.
Glad you got it sorted

The Umidigi A 5
Is out now, it has some good specs for less than $100. US
Any good for porting ,it comes with no bloatware and android 9.

@Lakotaubp Thanks, I was trying not to mention the almighty $, hoping a dev would pick them up

I have a Pro 5 ( ubuntu originaly)
and a Bq m10fhd (it has the losing password fault)
owned by a nonsmoker, old retired guy ,so these are like new with original boxes.
in Tennessee usa,
anyone interested before they go on Ebay