Here is a list of other Huawei modes:
AT^U2DIAG=0 Modem Mode
AT^U2DIAG=1 Modem and CD-Rom Mode
AT^U2DIAG=255 Modem+CD-Rom+Card-Reader Modem+ Factory Defaults Setting
AT^U2DIAG=256 Modem+Card-Reader Mode
AT^U2DIAG=257 Disable Application Port
AT^U2DIAG=276 Reset to factory Defaults
AT^U2DIAG=119 to return to HiLink mode
Using this AT commands you may modeswitch your USB Huawei modem permanently to certain mode (ie: modem).
