It appears that the last version that 3g modems work with gargoyle is 1.5.6?
I've done some tests with my Ubnt RSpro
This is the output when plugging in my ZTE modem
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1.5.6
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usb 1-1: new high speed USB device using ar71xx-ehci and address 3
usb 1-1: configuration #1 chosen from 1 choice
option 1-1:1.0: GSM modem (1-port) converter detected
usb 1-1: GSM modem (1-port) converter now attached to ttyUSB0
option 1-1:1.1: GSM modem (1-port) converter detected
usb 1-1: GSM modem (1-port) converter now attached to ttyUSB1
scsi1 : SCSI emulation for USB Mass Storage devices
option 1-1:1.3: GSM modem (1-port) converter detected
usb 1-1: GSM modem (1-port) converter now attached to ttyUSB2
scsi 1:0:0:0: Direct-Access ZTE MMC Storage 322 PQ: 0 ANSI: 2
sd 1:0:0:0: [sdb] 7716864 512-byte logical blocks: (3.95 GB/3.67 GiB)
sd 1:0:0:0: [sdb] Write Protect is off
sd 1:0:0:0: [sdb] Assuming drive cache: write through
sd 1:0:0:0: [sdb] Assuming drive cache: write through
sdb: sdb1
sd 1:0:0:0: [sdb] Assuming drive cache: write through
sd 1:0:0:0: [sdb] Attached SCSI removable disk
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1.5.7
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110.110000] usb 1-1: new high-speed USB device number 3 using ehci-platform
[ 110.420000] scsi1 : usb-storage 1-1:1.2
[ 111.430000] scsi 1:0:0:0: Direct-Access ZTE MMC Storage 322 PQ: 0 ANSI: 2
[ 111.440000] sd 1:0:0:0: [sdb] 7716864 512-byte logical blocks: (3.95 GB/3.67 GiB)
[ 111.450000] sd 1:0:0:0: [sdb] Write Protect is off
[ 111.460000] sd 1:0:0:0: [sdb] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
[ 111.480000] sdb: sdb1
[ 111.500000] sd 1:0:0:0: [sdb] Attached SCSI removable disk
[ 111.820000] disktype: sending ioctl 5305 to a partition!
[ 111.820000] disktype: sending ioctl 5305 to a partition!
[ 111.920000] EXT4-fs (sda1): mounted filesystem with ordered data mode. Opts: (null)
[ 112.580000] disktype: sending ioctl 5305 to a partition!
[ 112.590000] disktype: sending ioctl 5305 to a partition!
[ 112.680000] EXT4-fs (sda1): mounted filesystem with ordered data mode. Opts: (null)
[ 112.780000] disktype: sending ioctl 5305 to a partition!
[ 112.780000] disktype: sending ioctl 5305 to a partition![/code]
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1.5.8
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[ 191.950000] usb 1-1: new high-speed USB device number 3 using ehci-platform
[ 192.260000] scsi1 : usb-storage 1-1:1.2
[ 193.270000] scsi 1:0:0:0: Direct-Access ZTE MMC Storage 322 PQ: 0 ANSI: 2
[ 193.280000] sd 1:0:0:0: [sdb] 7716864 512-byte logical blocks: (3.95 GB/3.67 GiB)
[ 193.290000] sd 1:0:0:0: [sdb] Write Protect is off
[ 193.290000] sd 1:0:0:0: [sdb] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
[ 193.310000] sdb: sdb1
[ 193.320000] sd 1:0:0:0: [sdb] Attached SCSI removable disk
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1.5.9
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[ 284.640000] usb 1-1: new high-speed USB device number 3 using ehci-platform
[ 284.950000] scsi1 : usb-storage 1-1:1.2
[ 285.960000] scsi 1:0:0:0: Direct-Access ZTE MMC Storage 322 PQ: 0 ANSI: 2
[ 285.970000] sd 1:0:0:0: [sdb] 7716864 512-byte logical blocks: (3.95 GB/3.67 GiB)
[ 285.980000] sd 1:0:0:0: [sdb] Write Protect is off
[ 285.980000] sd 1:0:0:0: [sdb] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
[ 286.000000] sdb: sdb1
[ 286.010000] sd 1:0:0:0: [sdb] Attached SCSI removable disk