Although B030SP06_unlocked doesn't have a GUI interface, it's fully supported by DSLstats and HG612-stats, so you'll still be able to get all the information you need about the performance of your connection. The only bit of information you can't get from the CLI is the firmware version.
you can get that info via telnet:
Copyright by Huawei Technologies Co., Ltd.
Login:admin
Password:
ATP>sh
BusyBox v1.9.1 (2013-06-01 18:30:08 CST) built-in shell (ash)
Enter 'help' for a list of built-in commands.
# xdslcmd info -- version
xdslcmd: too many parameters
# xdslcmd info -- version
xdslcmd: too many parameters
# xdslcmd info --version
xdslcmd: ADSL driver and PHY status
Status: Showtime
Retrain Reason: 0
Last initialization procedure status: 0
Max: Upstream rate = 15709 Kbps, Downstream rate = 70784 Kbps
Bearer: 0, Upstream rate = 16011 Kbps, Downstream rate = 63415 K
xdslcmd version 1.0
DSL PHY:
AnnexA version - A2pv6C038m.d24j******* Pass *********
#