I just tried it and it worked for me (tried with sudo echo in root and that doesn't work, already sudo as root@mobian).
To see firmware version:
(ADSP Version 30.006.30.006)
Code:
mobian@mobian:~/Downloads$ sudo su
[sudo] password for mobian:
root@mobian:/home/mobian/Downloads# echo -ne "AT+QFASTBOOT\r" > /dev/ttyUSB2
root@mobian:/home/mobian/Downloads# fastboot flash modem NON-HLOS.ubi && fastboot reboot
Sending 'modem' (40064 KB) OKAY [ 1.399s]
Writing 'modem' OKAY [ 15.217s]
Finished. Total time: 16.629s
Rebooting OKAY [ 0.004s]
Finished. Total time: 0.055s
To see firmware version:
Code:
root@mobian:/home/mobian/Downloads# mmcli -m any --command='AT+GMR'
response: 'EG25GGBR07A08M2G'
Pinephone v1.2 UBports CE. Adelaide, Australia using Amaysim SIM (Optus network, VoLTE enabled) with Mobian SD card. VoLTE working also with Felix / Vodafone AU and Aldimobile / Telstra AU.
Manjaro Plasma Mobile on EMMC.
Manjaro Plasma Mobile on EMMC.