I had an installation in 19.07.06 with 4G usb stick Huawei 3372 (stick mode, non-Hilink). TheCF card is malfunctioning and i got a new one. Once i flashed 19.07.07 i got an error message on interfaces for missing packages in wwan. No matter how many times i tried it did not help and i decided to create the 4G by hand. I plug the usb and i can see it found in lsusb:
root@OpenWrt_alix: ~ $ lsusb
Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
**Bus 001 Device 003: ID 12d1:1506 Huawei Technologies Co., Ltd. Modem/Networkcard**
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
root@OpenWrt_alix: ~ $
I cannot find it in /dev/ as usb device:
root@OpenWrt_alix: ~ $ ls /dev/
bsg loop7 tty1 tty26 tty42 tty59 ttyS3
bus memory_bandwidth tty10 tty27 tty43 tty6 ttyS4
console network_latency tty11 tty28 tty44 tty60 ttyS5
cpu network_throughput tty12 tty29 tty45 tty61 ttyS6
cpu_dma_latency null tty13 tty3 tty46 tty62 ttyS7
full nvram tty14 tty30 tty47 tty63 ttyS8
gpiochip0 port tty15 tty31 tty48 tty7 ttyS9
hwrng ppp tty16 tty32 tty49 tty8 urandom
kmsg ptmx tty17 tty33 tty5 tty9 vcs
log pts tty18 tty34 tty50 ttyS0 vcs1
loop-control random tty19 tty35 tty51 ttyS1 vcsa
loop0 rtc0 tty2 tty36 tty52 ttyS10 vcsa1
loop1 sda tty20 tty37 tty53 ttyS11 watchdog
loop2 sda1 tty21 tty38 tty54 ttyS12 zero
loop3 sda2 tty22 tty39 tty55 ttyS13
loop4 shm tty23 tty4 tty56 ttyS14
loop5 tty tty24 tty40 tty57 ttyS15
loop6 tty0 tty25 tty41 tty58 ttyS2
root@OpenWrt_alix: ~ $
By opening the config file for networking from the backup it has:
config interface 'wwan'
option proto 'ncm'
option ifname 'wwan0'
option apn 'myq'
option mode 'preferlte'
option delay '5'
option pdptype 'IP'
option ipv6 'auto'
option dialnumber '*99#'
option service 'auto'
option device '/dev/ttyUSB0'
Why i cannot see anything in /dev/ for USB?