Stuck in bootloader

[Mstrodl]

Hey, I've tried updating my somu a few times, but it's stuck in bootloader mode and seems convinced it's on 3.1.2?:

$ solo ls
:: Solos
-snip-: SoloKeys Solo Bootloader 3.1.2
$ solo key version
3.1.2 locked
$ solo key update
Wrote temporary copy of firmware-4.1.5.json to /tmp/tmpayf6u4zp.json
sha256sums coincide: f36bb365bfddf75004f28af392ae1439192ca0ed821ef496084a75a00d05087a
using signature version >2.5.3
erasing firmware...
updated firmware 100%
time: 9.30 s
bootloader is verifying signature...
s...pass!

Congratulations, your key was updated to the latest firmware version: 4.1.5
$ solo key version
No Solo found.
If you are on Linux, are your udev rules up to date?
$ solo key version
3.1.2 locked
$ solo ls
:: Solos
-snip-: SoloKeys Solo Bootloader 3.1.2

Any ideas?