3 days in, slow/stuck or no boot.
BUT, but when you got the pbp, it was booting from the emmc,
so it must have been recognized then (that particular emmc at least)
The "emmc turn-off" button is a bit flaky, try to boot from sd with emmc removed
I don't know what kind of emmc adapter you have, some are usb and some are sd
If it is usb, and if pmOS boots from sd, then use that to flash armbian on working emmc
(the emmc that had manjaro on it, in adapter, plugged into usb, or a fsck alternatively)
OR, maybe the emmc socket has been damaged, this is a possibility
One other thing to try, if it appears completely dead is a "hard reset" hold pwr button down for 20+ seconds
OR, sometimes a "hard power-off" is useful, hold pwr button down for 8 seconds (usually try this 1st)
----
Please be really careful to use ONLY images for "pinebookpro" and NOT "pinebook"
They are completely different CPU and u-boot locations, you WILL need to do a hard reset after
an attempted boot with allwinner uboot boot attempt
so it must have been recognized then (that particular emmc at least)
The "emmc turn-off" button is a bit flaky, try to boot from sd with emmc removed
I don't know what kind of emmc adapter you have, some are usb and some are sd
If it is usb, and if pmOS boots from sd, then use that to flash armbian on working emmc
(the emmc that had manjaro on it, in adapter, plugged into usb, or a fsck alternatively)
OR, maybe the emmc socket has been damaged, this is a possibility
One other thing to try, if it appears completely dead is a "hard reset" hold pwr button down for 20+ seconds
OR, sometimes a "hard power-off" is useful, hold pwr button down for 8 seconds (usually try this 1st)
----
Please be really careful to use ONLY images for "pinebookpro" and NOT "pinebook"
They are completely different CPU and u-boot locations, you WILL need to do a hard reset after
an attempted boot with allwinner uboot boot attempt