Zrobiłem. Poniżej log.
Ale niestety nie łączy.
Aby przywrócić 3G musiałem zmienić na ttyUSB4:
MODE="AT+ZSNT=0,0,0" gcom -d /dev/ttyUSB4 -s /etc/gcom/setmode.gcom

Oct 20 22:16:34 Gargoyle daemon.info pppd[4328]: Terminating on signal 15
Oct 20 22:16:34 Gargoyle daemon.info pppd[4328]: Connect time 4.5 minutes.
Oct 20 22:16:34 Gargoyle daemon.info pppd[4328]: Sent 71039 bytes, received 99413 bytes.
Oct 20 22:16:34 Gargoyle daemon.notice pppd[4328]: Connection terminated.
Oct 20 22:16:35 Gargoyle daemon.info pppd[4328]: Exit.
Oct 20 22:16:35 Gargoyle daemon.notice netifd: Interface 'wan' is now down
Oct 20 22:16:52 Gargoyle kern.info kernel: [ 5152.260000] usb 1-1: USB disconnect, device number 3
Oct 20 22:16:52 Gargoyle kern.info kernel: [ 5152.270000] option1 ttyUSB0: GSM modem (1-port) converter now disconnected from ttyUSB0
Oct 20 22:16:52 Gargoyle kern.info kernel: [ 5152.280000] option 1-1:1.0: device disconnected
Oct 20 22:16:52 Gargoyle kern.info kernel: [ 5152.280000] option1 ttyUSB1: GSM modem (1-port) converter now disconnected from ttyUSB1
Oct 20 22:16:52 Gargoyle kern.info kernel: [ 5152.290000] option 1-1:1.1: device disconnected
Oct 20 22:16:52 Gargoyle kern.info kernel: [ 5152.290000] option1 ttyUSB2: GSM modem (1-port) converter now disconnected from ttyUSB2
Oct 20 22:16:52 Gargoyle kern.info kernel: [ 5152.300000] option 1-1:1.2: device disconnected
Oct 20 22:16:52 Gargoyle kern.err kernel: [ 5152.310000] option: option_instat_callback: error -143
Oct 20 22:16:52 Gargoyle kern.info kernel: [ 5152.310000] option1 ttyUSB3: GSM modem (1-port) converter now disconnected from ttyUSB3
Oct 20 22:16:52 Gargoyle kern.info kernel: [ 5152.320000] option 1-1:1.3: device disconnected
Oct 20 22:16:52 Gargoyle kern.notice kernel: [ 5152.330000] sd 1:0:0:0: [sda] Synchronizing SCSI cache
Oct 20 22:16:52 Gargoyle kern.info kernel: [ 5152.330000] sd 1:0:0:0: [sda]  Result: hostbyte=0x01 driverbyte=0x00
Oct 20 22:16:52 Gargoyle kern.info kernel: [ 5152.630000] usb 1-1: new high-speed USB device number 4 using ehci-platform
Oct 20 22:16:52 Gargoyle kern.info kernel: [ 5152.790000] option 1-1:1.0: GSM modem (1-port) converter detected
Oct 20 22:16:52 Gargoyle kern.info kernel: [ 5152.790000] usb 1-1: GSM modem (1-port) converter now attached to ttyUSB0
Oct 20 22:16:52 Gargoyle kern.info kernel: [ 5152.800000] option 1-1:1.1: GSM modem (1-port) converter detected
Oct 20 22:16:52 Gargoyle kern.info kernel: [ 5152.810000] usb 1-1: GSM modem (1-port) converter now attached to ttyUSB1
Oct 20 22:16:52 Gargoyle kern.info kernel: [ 5152.810000] option 1-1:1.2: GSM modem (1-port) converter detected
Oct 20 22:16:52 Gargoyle kern.info kernel: [ 5152.820000] usb 1-1: GSM modem (1-port) converter now attached to ttyUSB2
Oct 20 22:16:52 Gargoyle kern.info kernel: [ 5152.830000] option 1-1:1.3: GSM modem (1-port) converter detected
Oct 20 22:16:52 Gargoyle kern.info kernel: [ 5152.830000] usb 1-1: GSM modem (1-port) converter now attached to ttyUSB3
Oct 20 22:16:52 Gargoyle kern.info kernel: [ 5152.850000] scsi2 : usb-storage 1-1:1.5
Oct 20 22:16:53 Gargoyle kern.notice kernel: [ 5153.850000] scsi 2:0:0:0: Direct-Access     Vodafone MMC Storage      2.31 PQ: 0 ANSI: 2
Oct 20 22:16:53 Gargoyle kern.notice kernel: [ 5153.860000] sd 2:0:0:0: [sda] 7741440 512-byte logical blocks: (3.96 GB/3.69 GiB)
Oct 20 22:16:53 Gargoyle kern.notice kernel: [ 5153.880000] sd 2:0:0:0: [sda] Write Protect is off
Oct 20 22:16:53 Gargoyle kern.debug kernel: [ 5153.880000] sd 2:0:0:0: [sda] Mode Sense: 0f 0e 00 00
Oct 20 22:16:53 Gargoyle kern.notice kernel: [ 5153.880000] sd 2:0:0:0: [sda] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
Oct 20 22:16:53 Gargoyle kern.info kernel: [ 5153.920000]  sda: sda1
Oct 20 22:16:53 Gargoyle kern.notice kernel: [ 5153.940000] sd 2:0:0:0: [sda] Attached SCSI removable disk
Oct 20 22:16:54 Gargoyle user.notice usb-modeswitch: 1-1:1.0: Manufacturer=Vodafone_(ZTE) Product=Vodafone_Mobile_Broadband_K3565-Z Serial=?
Oct 20 22:16:54 Gargoyle user.notice usb-modeswitch: 1-1:1.1: Manufacturer=Vodafone_(ZTE) Product=Vodafone_Mobile_Broadband_K3565-Z Serial=?
Oct 20 22:16:54 Gargoyle user.notice usb-modeswitch: 1-1:1.2: Manufacturer=Vodafone_(ZTE) Product=Vodafone_Mobile_Broadband_K3565-Z Serial=?
Oct 20 22:16:54 Gargoyle user.notice usb-modeswitch: 1-1:1.3: Manufacturer=Vodafone_(ZTE) Product=Vodafone_Mobile_Broadband_K3565-Z Serial=?
Oct 20 22:16:55 Gargoyle user.notice usb-modeswitch: 1-1:1.4: Manufacturer=Vodafone_(ZTE) Product=Vodafone_Mobile_Broadband_K3565-Z Serial=?
Oct 20 22:16:55 Gargoyle user.notice usb-modeswitch: 1-1:1.5: Manufacturer=Vodafone_(ZTE) Product=Vodafone_Mobile_Broadband_K3565-Z Serial=?
Oct 20 22:16:55 Gargoyle kern.warn kernel: [ 5155.670000] head: sending ioctl 540d to a partition!
Oct 20 22:16:55 Gargoyle kern.warn kernel: [ 5155.670000] head: sending ioctl 540d to a partition!
Oct 20 22:16:55 Gargoyle user.notice fstab: mount: mounting /dev/sda1 on /mnt/sda1 failed: Invalid argument