mam jeszcze taki problem sorry jesli bylo ale czytalem rozne topiki o extroot i nic nie znalazlem wiec chyba nie bylo ?
Otoz w cronie ustawilem zeby modem rozlaczalo rano przed 9-ta.
No wiec chodzi ladnie ponad 10 godzin, rozlacza, router, modem zasilanie wlaczone caly czas, dioda na modemie caly czas miga niebiesko (nigdy zielono) i nagle  po kilku godzinach o 11:39 "znikaja" dyski /dev/sd* i porty /dev/ttyUSB*.
O co chodzi z tym "option: option_instat_callback: error -143" ??
Jedyne logiczne wytlumaczenie to ze operator zdalnie cos miesza w modemie.
Ponadto jak ustawiam tylko czestowtliwosci 3g (04000020000)  komenda SYSCFG, sprawdzam SYSCFG? ze weszlo i pozniej drugi raz za kilkadziesiat minut to okazuje sie ze modem znowu dziala na wszystkich czestotliowsciach (3FFFFFFFF) !!!!

logread:
<code>
Sep 26 08:59:01 OpenWrt daemon.info pppd[924]: Terminating on signal 15
Sep 26 08:59:01 OpenWrt daemon.info pppd[924]: Connect time 691.1 minutes.
Sep 26 08:59:01 OpenWrt daemon.info pppd[924]: Sent 4674892 bytes, received 5438973 bytes.
Sep 26 08:59:01 OpenWrt daemon.notice pppd[924]: Connection terminated.
Sep 26 08:59:01 OpenWrt daemon.info pppd[924]: Exit.
Sep 26 08:59:01 OpenWrt daemon.notice netifd: Interface 'wan' is now down
Sep 26 08:59:01 OpenWrt user.info firewall: removing wan (3g-wan) from zone wan
Sep 26 11:39:13 OpenWrt kern.info kernel: [43444.290000] usb 1-1: USB disconnect, device number 2
Sep 26 11:39:13 OpenWrt kern.err kernel: [43444.300000] option: option_instat_callback: error -143
Sep 26 11:39:13 OpenWrt kern.info kernel: [43444.300000] option1 ttyUSB0: GSM modem (1-port) converter now disconnected from ttyUSB0
Sep 26 11:39:13 OpenWrt kern.info kernel: [43444.310000] option 1-1:1.0: device disconnected
Sep 26 11:39:13 OpenWrt kern.info kernel: [43444.320000] option1 ttyUSB1: GSM modem (1-port) converter now disconnected from ttyUSB1
Sep 26 11:39:13 OpenWrt kern.info kernel: [43444.320000] option 1-1:1.2: device disconnected
Sep 26 11:39:13 OpenWrt kern.info kernel: [43444.330000] option1 ttyUSB2: GSM modem (1-port) converter now disconnected from ttyUSB2
Sep 26 11:39:13 OpenWrt kern.info kernel: [43444.340000] option 1-1:1.3: device disconnected
Sep 26 11:39:13 OpenWrt kern.notice kernel: [43444.350000] sd 0:0:0:0: [sda] Synchronizing SCSI cache
Sep 26 11:39:13 OpenWrt kern.info kernel: [43444.350000] sd 0:0:0:0: [sda]  Result: hostbyte=0x01 driverbyte=0x00
Sep 26 11:39:13 OpenWrt kern.info kernel: [43444.660000] usb 1-1: new high-speed USB device number 3 using ehci-platform
Sep 26 11:39:13 OpenWrt kern.err kernel: [43444.820000] hub 1-0:1.0: unable to enumerate USB device on port 1
</code>