# Usb\_modeswitch on air unit **URL:** \ **Category:** HereLink\ **Created:** [5 October 2021 10:20 UTC](https://discuss.cubepilot.org/t/usb-modeswitch-on-air-unit/7446 "2021-10-05T10:20:10Z")\ **Posts on this page:** 20\ **Page:** 1
**Author:** ![Olivier\_Gasté](https://discuss.cubepilot.org/user_avatar/discuss.cubepilot.org/olivier_gast%C3%A9/32/4309_2.png) [@Olivier\_Gasté](https://discuss.cubepilot.org/u/Olivier_Gast%C3%A9)\ **Post date:** [5 October 2021 10:20 UTC](https://discuss.cubepilot.org/t/usb-modeswitch-on-air-unit/7446/1 "2021-10-05T10:20:10Z")
hello gods of herelink I’ve compiled libusb and usb\_modeswicth tools for arm air unit unfortunately /system is read-only and I dont find a way to install it correctly I try to switch a e3372 modem into eth lan interface mode I tryied to set all in the same folder but looks not working ```auto # ls libusb1.0.so usb_modeswitch usb_modeswitch.conf # ./usb_modeswitch -v 12d1 -p 1f01 -c ./usb_modeswitch.conf # ``` thank’s for any info @Michael_Oborne any idea ? ---
**Author:** ![Michael\_Oborne](https://discuss.cubepilot.org/user_avatar/discuss.cubepilot.org/michael_oborne/32/13_2.png) [@Michael\_Oborne](https://discuss.cubepilot.org/u/Michael_Oborne)\ **Post date:** [6 October 2021 03:06 UTC](https://discuss.cubepilot.org/t/usb-modeswitch-on-air-unit/7446/2 "2021-10-06T03:06:55Z")
we ship the air unit with SU capability’s. so add it to the /data partition ---
**Author:** ![Olivier\_Gasté](https://discuss.cubepilot.org/user_avatar/discuss.cubepilot.org/olivier_gast%C3%A9/32/4309_2.png) [@Olivier\_Gasté](https://discuss.cubepilot.org/u/Olivier_Gast%C3%A9)\ **Post date:** [6 October 2021 07:54 UTC](https://discuss.cubepilot.org/t/usb-modeswitch-on-air-unit/7446/3 "2021-10-06T07:54:20Z")
Thank’s a lot ! I’ve seen air unit is SU capable but my main question is how to set `libusb1.0.so` correctly in lib folder (should be in `/system/lib64/`) is there any other folder where i can put shared lib ?? `/data/app_lib` or somewhere else ?? ---
**Author:** ![Michael\_Oborne](https://discuss.cubepilot.org/user_avatar/discuss.cubepilot.org/michael_oborne/32/13_2.png) [@Michael\_Oborne](https://discuss.cubepilot.org/u/Michael_Oborne)\ **Post date:** [6 October 2021 08:46 UTC](https://discuss.cubepilot.org/t/usb-modeswitch-on-air-unit/7446/4 "2021-10-06T08:46:55Z")
given when you run it above it didnt crash, are you sure you need to put in in there. ---
**Author:** ![Olivier\_Gasté](https://discuss.cubepilot.org/user_avatar/discuss.cubepilot.org/olivier_gast%C3%A9/32/4309_2.png) [@Olivier\_Gasté](https://discuss.cubepilot.org/u/Olivier_Gast%C3%A9)\ **Post date:** [6 October 2021 13:39 UTC](https://discuss.cubepilot.org/t/usb-modeswitch-on-air-unit/7446/5 "2021-10-06T13:39:47Z")
I’ tried 2 things : - use the libusb1.0.so and usb\_modeswitch from remote unit on air unit and I have no output (even the standard one with “usage” when no param are given) - recompile usb\_modeswitch and libusb : ```auto # cd arm64-v8a/ # ls libusb1.0.so usb_modeswitch # ./usb_modeswitch WARNING: linker: /tmp/share/usbms/arm64-v8a/usb_modeswitch: unsupported flags DT_FLAGS_1=0x8000001 # cd ../armeabi-v7a/ # ./usb_modeswitch WARNING: linker: /tmp/share/usbms/armeabi-v7a/usb_modeswitch: unsupported flags DT_FLAGS_1=0x8000001 # ``` ---
**Author:** ![Michael\_Oborne](https://discuss.cubepilot.org/user_avatar/discuss.cubepilot.org/michael_oborne/32/13_2.png) [@Michael\_Oborne](https://discuss.cubepilot.org/u/Michael_Oborne)\ **Post date:** [6 October 2021 20:41 UTC](https://discuss.cubepilot.org/t/usb-modeswitch-on-air-unit/7446/6 "2021-10-06T20:41:23Z")
i think you might need to add more debug to the app, as the linker warning are just that, and not the app failing ---
**Author:** ![Olivier\_Gasté](https://discuss.cubepilot.org/user_avatar/discuss.cubepilot.org/olivier_gast%C3%A9/32/4309_2.png) [@Olivier\_Gasté](https://discuss.cubepilot.org/u/Olivier_Gast%C3%A9)\ **Post date:** [7 October 2021 08:39 UTC](https://discuss.cubepilot.org/t/usb-modeswitch-on-air-unit/7446/7 "2021-10-07T08:39:32Z")
in fact my compiled app is working ok on remote unit as soon as I push it on air unit I got this error I think it’s because It could not find libusb in the right folder ---
**Author:** ![Michael\_Oborne](https://discuss.cubepilot.org/user_avatar/discuss.cubepilot.org/michael_oborne/32/13_2.png) [@Michael\_Oborne](https://discuss.cubepilot.org/u/Michael_Oborne)\ **Post date:** [7 October 2021 09:19 UTC](https://discuss.cubepilot.org/t/usb-modeswitch-on-air-unit/7446/8 "2021-10-07T09:19:45Z")
run it with strace ---
**Author:** ![Olivier\_Gasté](https://discuss.cubepilot.org/user_avatar/discuss.cubepilot.org/olivier_gast%C3%A9/32/4309_2.png) [@Olivier\_Gasté](https://discuss.cubepilot.org/u/Olivier_Gast%C3%A9)\ **Post date:** [7 October 2021 10:06 UTC](https://discuss.cubepilot.org/t/usb-modeswitch-on-air-unit/7446/9 "2021-10-07T10:06:09Z")
OK I finally get it to work by setting the libusb at right place (`/system/lib64/`) (still have the linker warning but it gets a bit more verbose ) as result I can get my HUAWEI 4G modem goes to Hlink mode and I well get the eth0 interface ```auto # usb_modeswitch -v 12d1 -p 1f01 -c ./usb_modeswitch.conf WARNING: linker: /system/bin/usb_modeswitch: unsupported flags DT_FLAGS_1=0x8000001 test Look for target devices ... No devices in target mode or class found Look for default devices ... product ID matched Found devices in default mode (1) Access device 002 on bus 001 Get the current device configuration ... Current configuration number is 1 Use interface number 0 with class 8 Use endpoints 0x01 (out) and 0x81 (in) USB description data (for identification) ------------------------- Manufacturer: HUAWEI_MOBILE Product: HUAWEI_MOBILE Serial No.: 0123456789ABCDEF ------------------------- Using standard Huawei switching message Looking for active driver ... OK, driver detached Set up interface 0 Use endpoint 0x01 for message sending ... Trying to send message 1 to endpoint 0x01 ... OK, message successfully sent Read the response to message 1 (CSW) ... Response reading failed (error -1) Device is gone, skip any further commands -> Run lsusb to note any changes. Bye! # lsusb Bus 001 Device 001: ID 1d6b:0002 Bus 001 Device 003: ID 12d1:14db # ifconfig lmi40 Link encap:UNSPEC inet addr:192.168.0.10 P-t-P:192.168.0.10 Mask:255.255.255.0 inet6 addr: fe80::44f5:e09e:6ca8:d124/64 Scope: Link UP POINTOPOINT RUNNING NOARP MULTICAST MTU:1550 Metric:1 RX packets:14971 errors:0 dropped:2 overruns:0 frame:0 TX packets:21528 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:500 RX bytes:834630 TX bytes:1237393 eth0 Link encap:Ethernet HWaddr 00:1e:10:1f:00:00 inet6 addr: fe80::21e:10ff:fe1f:0/64 Scope: Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:12 errors:0 dropped:0 overruns:0 frame:0 TX packets:2 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:1048 TX bytes:160 vxlan1 Link encap:Ethernet HWaddr 46:18:60:e1:28:7e inet6 addr: fe80::4418:60ff:fee1:287e/64 Scope: Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:46 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:0 TX bytes:2888 br-vxlan Link encap:Ethernet HWaddr b8:8d:f1:ff:34:69 inet addr:192.168.144.10 Bcast:192.168.144.255 Mask:255.255.255.0 inet6 addr: fe80::ba8d:f1ff:feff:3469/64 Scope: Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:12 errors:0 dropped:0 overruns:0 frame:0 TX packets:12 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:1048 TX bytes:760 lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 inet6 addr: ::1/128 Scope: Host UP LOOPBACK RUNNING MTU:65536 Metric:1 RX packets:116380 errors:0 dropped:0 overruns:0 frame:0 TX packets:116380 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1 RX bytes:8196912 TX bytes:8196912 br-vxlan:0 Link encap:Ethernet HWaddr b8:8d:f1:ff:34:69 inet addr:192.168.42.10 Bcast:192.168.42.255 Mask:255.255.255.0 UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 ``` driver loading looks ok status led on modem goes to solid on 4G network every thing looks ok unfortunately I should get a IPv4 address from CGNAT but I dont … and ping throug eth0 is obviously not working I think it’s due to default bridging of eth0 into br-vxlan interface config to work with usb to eth converter is it possible to get rid of that ?? ```auto # ping 8.8.8.8 connect: Network is unreachable # ping -I eth0 8.8.8.8 ping: Warning: source address might be selected on device other than eth0. PING 8.8.8.8 (8.8.8.8) from 192.168.42.10 eth0: 56(84) bytes of data. From 192.168.42.10: icmp_seq=1 Destination Host Unreachable From 192.168.42.10: icmp_seq=2 Destination Host Unreachable From 192.168.42.10: icmp_seq=3 Destination Host Unreachable From 192.168.42.10: icmp_seq=4 Destination Host Unreachable From 192.168.42.10: icmp_seq=5 Destination Host Unreachable From 192.168.42.10: icmp_seq=6 Destination Host Unreachable From 192.168.42.10: icmp_seq=7 Destination Host Unreachable From 192.168.42.10: icmp_seq=8 Destination Host Unreachable From 192.168.42.10: icmp_seq=9 Destination Host Unreachable ^C --- 8.8.8.8 ping statistics --- 10 packets transmitted, 0 received, +9 errors, 100% packet loss, time 9132ms pipe 4 ``` ---
**Author:** ![Michael\_Oborne](https://discuss.cubepilot.org/user_avatar/discuss.cubepilot.org/michael_oborne/32/13_2.png) [@Michael\_Oborne](https://discuss.cubepilot.org/u/Michael_Oborne)\ **Post date:** [8 October 2021 06:12 UTC](https://discuss.cubepilot.org/t/usb-modeswitch-on-air-unit/7446/10 "2021-10-08T06:12:56Z")
try su start dhcpcd not sure if this will help or not to stop the auto bridge add su stop usbethx ---
**Author:** ![frame](https://discuss.cubepilot.org/letter_avatar_proxy/v4/letter/f/d07c76/32.png) [@frame](https://discuss.cubepilot.org/u/frame)\ **Post date:** [10 October 2021 20:56 UTC](https://discuss.cubepilot.org/t/usb-modeswitch-on-air-unit/7446/11 "2021-10-10T20:56:55Z")
@Olivier_Gasté can you share your compiled usb\_modeswitch binaries to experiment with? ---
**Author:** ![Olivier\_Gasté](https://discuss.cubepilot.org/user_avatar/discuss.cubepilot.org/olivier_gast%C3%A9/32/4309_2.png) [@Olivier\_Gasté](https://discuss.cubepilot.org/u/Olivier_Gast%C3%A9)\ **Post date:** [11 October 2021 08:02 UTC](https://discuss.cubepilot.org/t/usb-modeswitch-on-air-unit/7446/12 "2021-10-11T08:02:08Z")
yea with pleasure [https://drive.google.com/drive/folders/1gk2h9wt5nAFBQ663cQ1A9jF5k8tTnrle?usp=sharing](https://drive.google.com/drive/folders/1gk2h9wt5nAFBQ663cQ1A9jF5k8tTnrle?usp=sharing) you need to set .so file into /system/lib64 and you can put bin in /system/bin ---
**Author:** ![Olivier\_Gasté](https://discuss.cubepilot.org/user_avatar/discuss.cubepilot.org/olivier_gast%C3%A9/32/4309_2.png) [@Olivier\_Gasté](https://discuss.cubepilot.org/u/Olivier_Gast%C3%A9)\ **Post date:** [11 October 2021 16:48 UTC](https://discuss.cubepilot.org/t/usb-modeswitch-on-air-unit/7446/13 "2021-10-11T16:48:37Z")
I can Have a eth0 not linked to br-vxlan but it start down and even iff I’m turning it up I get no IPV4 and obviously I have no route passing by eth0 I’m still searching thank’s for the help ```auto eth0 Link encap:Ethernet HWaddr 00:1e:10:1f:00:00 inet6 addr: fe80::21e:10ff:fe1f:0/64 Scope: Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:7 errors:0 dropped:0 overruns:0 frame:0 TX packets:13 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:416 TX bytes:834 ``` ---
**Author:** ![Michael\_Oborne](https://discuss.cubepilot.org/user_avatar/discuss.cubepilot.org/michael_oborne/32/13_2.png) [@Michael\_Oborne](https://discuss.cubepilot.org/u/Michael_Oborne)\ **Post date:** [11 October 2021 22:26 UTC](https://discuss.cubepilot.org/t/usb-modeswitch-on-air-unit/7446/14 "2021-10-11T22:26:17Z")
ok,thdhcpcd command i gave above if for dhcp on the bridge. you will need to start dhcp manualy to assign that interface an ip. ---
**Author:** ![Olivier\_Gasté](https://discuss.cubepilot.org/user_avatar/discuss.cubepilot.org/olivier_gast%C3%A9/32/4309_2.png) [@Olivier\_Gasté](https://discuss.cubepilot.org/u/Olivier_Gast%C3%A9)\ **Post date:** [12 October 2021 08:09 UTC](https://discuss.cubepilot.org/t/usb-modeswitch-on-air-unit/7446/15 "2021-10-12T08:09:49Z")
things I dont understand is that normaly it should get it IP from CGNAT router of LTE provider … ---
**Author:** ![Olivier\_Gasté](https://discuss.cubepilot.org/user_avatar/discuss.cubepilot.org/olivier_gast%C3%A9/32/4309_2.png) [@Olivier\_Gasté](https://discuss.cubepilot.org/u/Olivier_Gast%C3%A9)\ **Post date:** [12 October 2021 09:44 UTC](https://discuss.cubepilot.org/t/usb-modeswitch-on-air-unit/7446/16 "2021-10-12T09:44:49Z")
YES !!! ```auto # ping -I eth0 8.8.8.8 PING 8.8.8.8 (8.8.8.8) from 192.168.8.102 eth0: 56(84) bytes of data. 64 bytes from 8.8.8.8: icmp_seq=1 ttl=110 time=35.5 ms 64 bytes from 8.8.8.8: icmp_seq=2 ttl=110 time=34.2 ms 64 bytes from 8.8.8.8: icmp_seq=3 ttl=110 time=32.4 ms ``` thank’s a lot !!! I finaly get it to work !! so for those looking to do same first : you need correctly libusb.so lib and usb-modswitch tool installed you can get source and compile it from here [https://github.com/joerg65/usb\_modeswitch\_Android](https://github.com/joerg65/usb_modeswitch_Android) or simply get it from my previous message - connect your host directly to usb on air unit - authorize write on system partition `adb shell "su 0 mount -o rw,remount /system"` - autorise push on tmp folder `adb shell "su 0 chmod +w /tmp"` - then copy libusb.so and usb-modswitch to tmp folder `adb push /libusb1.0.so /tmp/` `adb push /usb-modeswitch /tmp/` - moves them to correct folder under a shell `adb shell` ```auto $su #mv /tmp/libusb1.0.so /system/lib64/ #mv /tmp/usbmodeswitch/system/bin/ ``` if you are using like me a HUAWEI 3372 4G modem you will need a conf file for usb-modeswitch tool you can directly write string code it’s up to you ( google is your friend) but I prefer readable conf file - just put the following into a `usb-modeswitch.conf` file and then push it to tmp and moves it to `/etc/` folder ```auto TargetVendor=0x12d1 TargetProductList="14db,14dc" HuaweiNewMode=1 NoDriverLoading=1 ``` - unplug your adb host of air unit and get connected to remote - reboot the air unit - connect your 4G modem to air unit USB OTG port (please use an externaly powered usb cable) - as explained here : [Herelink Ethernet - #3 by Michael\_Oborne](https://discuss.cubepilot.org/t/herelink-ethernet/4369/3) ```auto adb shell (gets you into the gcs unit) adb connect 192.168.0.10 adb -s 192.168.0.10:5555 shell ``` you will reach a shell on air unit - disable auto bridging of eth0 interface (thank’s a lot @Michael_Oborne I would have never find this one without you) ```auto su stop usbethx ``` - check your modem is well registered on usb ```auto # lsusb Bus 001 Device 001: ID 1d6b:0002 Bus 001 Device 003: ID 12d1:1f01 ``` - switch the modem into hilink mode (if you are using another modem you should probably use wwan0 mode and it’s a litel bit more confuse to get qmi working) ```auto # usb_modeswitch -v 12d1 -p 1f01 -c /etc/usb_modeswitch.conf ``` - check your eth0 is registered with : ` ip a` - wake up the interface : ` ifconfig eth0 up` - start dhcpd on eth0 : `dhcpcd-6.8.2 eth0` (it will setup route for you) - check your fresh IPv4 - check you can ping outside : `ping -I eth0 8.8.8.8` I still need to setup a dns correctly if someone can help it looks iptable is empty and seems android dont care about resolve.conf thank’s for all helps ---
**Author:** ![Olivier\_Gasté](https://discuss.cubepilot.org/user_avatar/discuss.cubepilot.org/olivier_gast%C3%A9/32/4309_2.png) [@Olivier\_Gasté](https://discuss.cubepilot.org/u/Olivier_Gast%C3%A9)\ **Post date:** [25 October 2021 16:44 UTC](https://discuss.cubepilot.org/t/usb-modeswitch-on-air-unit/7446/17 "2021-10-25T16:44:39Z")
to set a dns: I’ve try to add a `/syste/etc/resolv.conf` with `nameserver 8.8.8.8` inside (I tested 8.8.4.4 and some others found around internet) I’m still unable to ping 8.8.8.8 but [www.google.com](http://www.google.com) is still unknown host ---
**Author:** ![Mohammad\_Khazaeei](https://discuss.cubepilot.org/user_avatar/discuss.cubepilot.org/mohammad_khazaeei/32/4434_2.png) [@Mohammad\_Khazaeei](https://discuss.cubepilot.org/u/Mohammad_Khazaeei)\ **Post date:** [26 October 2021 05:35 UTC](https://discuss.cubepilot.org/t/usb-modeswitch-on-air-unit/7446/18 "2021-10-26T05:35:40Z")
How do you command su It is locked for me ---
**Author:** ![Olivier\_Gasté](https://discuss.cubepilot.org/user_avatar/discuss.cubepilot.org/olivier_gast%C3%A9/32/4309_2.png) [@Olivier\_Gasté](https://discuss.cubepilot.org/u/Olivier_Gast%C3%A9)\ **Post date:** [26 October 2021 07:39 UTC](https://discuss.cubepilot.org/t/usb-modeswitch-on-air-unit/7446/19 "2021-10-26T07:39:08Z")
you have to be aware that su is lock on remote but available on air unit here we speaking on putting 4G network capability on air unit ---
**Author:** ![Olivier\_Gasté](https://discuss.cubepilot.org/user_avatar/discuss.cubepilot.org/olivier_gast%C3%A9/32/4309_2.png) [@Olivier\_Gasté](https://discuss.cubepilot.org/u/Olivier_Gast%C3%A9)\ **Post date:** [26 October 2021 07:48 UTC](https://discuss.cubepilot.org/t/usb-modeswitch-on-air-unit/7446/20 "2021-10-26T07:48:57Z")
> [@Olivier\_Gasté](#): > > to set a dns: > I’ve try to add a `/syste/etc/resolv.conf` > with `nameserver 8.8.8.8` inside (I tested 8.8.4.4 and some others found around internet) > I’m still unable to ping 8.8.8.8 > but [www.google.com](http://www.google.com) is still unknown host same result using `setprop` ``` # setprop net.dns1 8.8.8.8 # getprop | grep dns [net.change]: [net.dns1] [net.dns1]: [8.8.8.8] # ping google.com ping: unknown host google.com # ping 8.8.8.8 PING 8.8.8.8 (8.8.8.8) 56(84) bytes of data. 64 bytes from 8.8.8.8: icmp_seq=1 ttl=110 time=95.8 ms 64 bytes from 8.8.8.8: icmp_seq=2 ttl=110 time=34.5 ms ^C --- 8.8.8.8 ping statistics --- 2 packets transmitted, 2 received, 0% packet loss, time 1001ms rtt min/avg/max/mdev = 34.513/65.193/95.873/30.680 ms ``` [Next page](https://discuss.cubepilot.org/t/usb-modeswitch-on-air-unit/7446.md?page=2)