I tried to follow the tutorial there:
https://openwrt.org/docs/guide-user/network/wan/wwan/ltedongle
Its firmware has been updated.
ATI
Manufacturer: Sierra Wireless, Incorporated
Model: EM7455
Revision: SWI9X30C_02.39.00.00 rF19400000000000 jenkins 2024/06/05 05:36:47
MEID: 0100000000000
IMEI: 0100000000000
IMEI SV: 23
FSN: L00000000000
+GCAP: +CGSM
The FCC lock has been removed.
at!entercnd="A710"
OK
AT!PCFCCAUTH?
NV Setting: 0
FCC Auth Enabled: 0
FCC Lock State: 0
Note: I need to install the mbim stuff to have the /dev/cdc-wdm0 device.
Note: the luci-proto-mbim cannot be installed. I think, it has been removed from the server.
# opkg update
# opkg install usbutils
# opkg install kmod-usb-net-qmi-wwan uqmi luci-proto-qmi kmod-usb-serial-option picocom
# opkg install kmod-usb-serial-qualcomm
# opkg install kmod-usb-net-cdc-mbim umbim luci-proto-mbim kmod-usb-serial-option
# cat /sys/kernel/debug/usb/devices
T: Bus=01 Lev=01 Prnt=01 Port=00 Cnt=01 Dev#= 3 Spd=480 MxCh= 0
D: Ver= 2.10 Cls=00(>ifc ) Sub=00 Prot=00 MxPS=64 #Cfgs= 1
P: Vendor=1199 ProdID=9079 Rev= 0.06
S: Manufacturer=Sierra Wireless, Incorporated
S: Product=Sierra Wireless EM7455 Qualcomm Snapdragon X7 LTE-A
S: SerialNumber=LF00000000000
C:* #Ifs= 5 Cfg#= 1 Atr=a0 MxPwr=500mA
A: FirstIf#=12 IfCount= 2 Cls=02(comm.) Sub=0e Prot=00
I:* If#= 0 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=ff Prot=ff Driver=qcserial
E: Ad=81(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms
E: Ad=01(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms
I:* If#= 2 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=00 Prot=00 Driver=qcserial
E: Ad=83(I) Atr=03(Int.) MxPS= 10 Ivl=32ms
E: Ad=82(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms
E: Ad=02(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms
I:* If#= 3 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=00 Prot=00 Driver=qcserial
E: Ad=85(I) Atr=03(Int.) MxPS= 10 Ivl=32ms
E: Ad=84(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms
E: Ad=03(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms
I:* If#=12 Alt= 0 #EPs= 1 Cls=02(comm.) Sub=0e Prot=00 Driver=cdc_mbim
E: Ad=87(I) Atr=03(Int.) MxPS= 64 Ivl=32ms
I: If#=13 Alt= 0 #EPs= 0 Cls=0a(data ) Sub=00 Prot=02 Driver=cdc_mbim
I:* If#=13 Alt= 1 #EPs= 2 Cls=0a(data ) Sub=00 Prot=02 Driver=cdc_mbim
E: Ad=86(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms
E: Ad=04(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms
There are devices: /dev/cdc-wdm0, /dev/ttyUSB0, /dev/ttyUSB1, /dev/ttyUSB2.
I use the following Internet settings from giffgaff:
APN: giffgaff.com
Username: gg
Password: p
Proxy: {Leave Blank}
MCC: 234
MNC: 10
APN protocol: IPv4v6
APN roaming protocol: IPv4
Authentication type: PAP
https://www.giffgaff.com/help/articles/internet-apn-settings-guide
My configuration
# ubus call system board
{
"kernel": "4.14.275",
"hostname": "OpenWrt",
"system": "Atheros AR7241 rev 1",
"model": "TP-Link TL-WR842N/ND v1",
"board_name": "tplink,tl-wr842n-v1",
"release": {
"distribution": "OpenWrt",
"version": "19.07.10",
"revision": "r11427-9ce6aa9d8d",
"target": "ath79/generic",
"description": "OpenWrt 19.07.10 r11427-9ce6aa9d8d"
}
}
uci export network
package network
config interface 'loopback'
option ifname 'lo'
option proto 'static'
option ipaddr '127.0.0.1'
option netmask '255.0.0.0'
config globals 'globals'
option ula_prefix 'fdc3:84bd:13f1::/48'
config interface 'wan'
option ifname 'eth1'
option proto 'dhcp'
config interface 'wan6'
option ifname 'eth1'
option proto 'dhcpv6'
config interface 'lan'
option type 'bridge'
option proto 'static'
option netmask '255.255.255.0'
option ip6assign '60'
option ifname 'eth0.1 wwan0'
option ipaddr '192.168.1.1'
config switch
option name 'switch0'
option reset '1'
option enable_vlan '1'
config switch_vlan
option device 'switch0'
option vlan '1'
option ports '1 2 3 4 0t'
config interface 'em7455'
option proto 'qmi'
option username 'gg'
option apn 'giffgaff.com'
option device '/dev/cdc-wdm0'
option password 'p'
option auth 'pap'
option ifname 'wwan0'
option pdptype 'ipv4v6'
# uci export wireless
package wireless
config wifi-device 'radio0'
option type 'mac80211'
option hwmode '11g'
option path 'pci0000:00/0000:00:00.0'
option country 'GB'
option htmode 'HT40'
option channel '13'
config wifi-iface 'default_radio0'
option device 'radio0'
option network 'lan'
option mode 'ap'
option key 'key'
option ssid 'ssid4324'
option encryption 'psk2'
# uci export dhcp
package dhcp
config dnsmasq
option domainneeded '1'
option boguspriv '1'
option filterwin2k '0'
option localise_queries '1'
option rebind_protection '1'
option rebind_localhost '1'
option local '/lan/'
option domain 'lan'
option expandhosts '1'
option nonegcache '0'
option authoritative '1'
option readethers '1'
option leasefile '/tmp/dhcp.leases'
option resolvfile '/tmp/resolv.conf.auto'
option nonwildcard '1'
option localservice '1'
config dhcp 'lan'
option interface 'lan'
option start '100'
option limit '150'
option leasetime '12h'
option dhcpv6 'server'
option ra 'server'
option ra_management '1'
config dhcp 'wan'
option interface 'wan'
option ignore '1'
config odhcpd 'odhcpd'
option maindhcp '0'
option leasefile '/tmp/hosts/odhcpd'
option leasetrigger '/usr/sbin/odhcpd-update'
option loglevel '4'
# uci export firewall
package firewall
config defaults
option syn_flood '1'
option input 'ACCEPT'
option output 'ACCEPT'
option forward 'REJECT'
config zone
option name 'lan'
list network 'lan'
option input 'ACCEPT'
option output 'ACCEPT'
option forward 'ACCEPT'
config zone
option name 'wan'
option input 'REJECT'
option output 'ACCEPT'
option forward 'REJECT'
option masq '1'
option mtu_fix '1'
list network 'wan'
list network 'wan6'
list network 'em7455'
config forwarding
option src 'lan'
option dest 'wan'
config rule
option name 'Allow-DHCP-Renew'
option src 'wan'
option proto 'udp'
option dest_port '68'
option target 'ACCEPT'
option family 'ipv4'
config rule
option name 'Allow-Ping'
option src 'wan'
option proto 'icmp'
option icmp_type 'echo-request'
option family 'ipv4'
option target 'ACCEPT'
config rule
option name 'Allow-IGMP'
option src 'wan'
option proto 'igmp'
option family 'ipv4'
option target 'ACCEPT'
config rule
option name 'Allow-DHCPv6'
option src 'wan'
option proto 'udp'
option src_ip 'fc00::/6'
option dest_ip 'fc00::/6'
option dest_port '546'
option family 'ipv6'
option target 'ACCEPT'
config rule
option name 'Allow-MLD'
option src 'wan'
option proto 'icmp'
option src_ip 'fe80::/10'
list icmp_type '130/0'
list icmp_type '131/0'
list icmp_type '132/0'
list icmp_type '143/0'
option family 'ipv6'
option target 'ACCEPT'
config rule
option name 'Allow-ICMPv6-Input'
option src 'wan'
option proto 'icmp'
list icmp_type 'echo-request'
list icmp_type 'echo-reply'
list icmp_type 'destination-unreachable'
list icmp_type 'packet-too-big'
list icmp_type 'time-exceeded'
list icmp_type 'bad-header'
list icmp_type 'unknown-header-type'
list icmp_type 'router-solicitation'
list icmp_type 'neighbour-solicitation'
list icmp_type 'router-advertisement'
list icmp_type 'neighbour-advertisement'
option limit '1000/sec'
option family 'ipv6'
option target 'ACCEPT'
config rule
option name 'Allow-ICMPv6-Forward'
option src 'wan'
option dest '*'
option proto 'icmp'
list icmp_type 'echo-request'
list icmp_type 'echo-reply'
list icmp_type 'destination-unreachable'
list icmp_type 'packet-too-big'
list icmp_type 'time-exceeded'
list icmp_type 'bad-header'
list icmp_type 'unknown-header-type'
option limit '1000/sec'
option family 'ipv6'
option target 'ACCEPT'
config rule
option name 'Allow-IPSec-ESP'
option src 'wan'
option dest 'lan'
option proto 'esp'
option target 'ACCEPT'
config rule
option name 'Allow-ISAKMP'
option src 'wan'
option dest 'lan'
option dest_port '500'
option proto 'udp'
option target 'ACCEPT'
config include
option path '/etc/firewall.user'
# head -n -0 /etc/firewall.user
# This file is interpreted as shell script.
# Put your custom iptables rules here, they will
# be executed with each firewall (re-)start.
# Internal uci firewall chains are flushed and recreated on reload, so
# put custom rules into the root chains e.g. INPUT or FORWARD or into the
# special user chains, e.g. input_wan_rule or postrouting_lan_rule.
root@OpenWrt:~# iptables-save -c
# Generated by iptables-save v1.8.3 on Wed Apr 20 11:05:47 2022
*nat
:PREROUTING ACCEPT [1522:119400]
:INPUT ACCEPT [1503:116423]
:OUTPUT ACCEPT [85:9830]
:POSTROUTING ACCEPT [85:9830]
:postrouting_lan_rule - [0:0]
:postrouting_rule - [0:0]
:postrouting_wan_rule - [0:0]
:prerouting_lan_rule - [0:0]
:prerouting_rule - [0:0]
:prerouting_wan_rule - [0:0]
:zone_lan_postrouting - [0:0]
:zone_lan_prerouting - [0:0]
:zone_wan_postrouting - [0:0]
:zone_wan_prerouting - [0:0]
[1522:119400] -A PREROUTING -m comment --comment "!fw3: Custom prerouting rule chain" -j prerouting_rule
[1522:119400] -A PREROUTING -i br-lan -m comment --comment "!fw3" -j zone_lan_prerouting
[0:0] -A PREROUTING -i eth1 -m comment --comment "!fw3" -j zone_wan_prerouting
[85:9830] -A POSTROUTING -m comment --comment "!fw3: Custom postrouting rule chain" -j postrouting_rule
[0:0] -A POSTROUTING -o br-lan -m comment --comment "!fw3" -j zone_lan_postrouting
[0:0] -A POSTROUTING -o eth1 -m comment --comment "!fw3" -j zone_wan_postrouting
[0:0] -A zone_lan_postrouting -m comment --comment "!fw3: Custom lan postrouting rule chain" -j postrouting_lan_rule
[1522:119400] -A zone_lan_prerouting -m comment --comment "!fw3: Custom lan prerouting rule chain" -j prerouting_lan_rule
[0:0] -A zone_wan_postrouting -m comment --comment "!fw3: Custom wan postrouting rule chain" -j postrouting_wan_rule
[0:0] -A zone_wan_postrouting -m comment --comment "!fw3" -j MASQUERADE
[0:0] -A zone_wan_prerouting -m comment --comment "!fw3: Custom wan prerouting rule chain" -j prerouting_wan_rule
COMMIT
# Completed on Wed Apr 20 11:05:47 2022
# Generated by iptables-save v1.8.3 on Wed Apr 20 11:05:47 2022
*mangle
:PREROUTING ACCEPT [2211:189130]
:INPUT ACCEPT [2192:186153]
:FORWARD ACCEPT [0:0]
:OUTPUT ACCEPT [2198:186821]
:POSTROUTING ACCEPT [2198:186821]
[0:0] -A FORWARD -o eth1 -p tcp -m tcp --tcp-flags SYN,RST SYN -m comment --comment "!fw3: Zone wan MTU fixing" -j TCPMSS --clamp-mss-to-pmtu
[0:0] -A FORWARD -i eth1 -p tcp -m tcp --tcp-flags SYN,RST SYN -m comment --comment "!fw3: Zone wan MTU fixing" -j TCPMSS --clamp-mss-to-pmtu
COMMIT
# Completed on Wed Apr 20 11:05:47 2022
# Generated by iptables-save v1.8.3 on Wed Apr 20 11:05:47 2022
*filter
:INPUT ACCEPT [0:0]
:FORWARD DROP [0:0]
:OUTPUT ACCEPT [0:0]
:forwarding_lan_rule - [0:0]
:forwarding_rule - [0:0]
:forwarding_wan_rule - [0:0]
:input_lan_rule - [0:0]
:input_rule - [0:0]
:input_wan_rule - [0:0]
:output_lan_rule - [0:0]
:output_rule - [0:0]
:output_wan_rule - [0:0]
:reject - [0:0]
:syn_flood - [0:0]
:zone_lan_dest_ACCEPT - [0:0]
:zone_lan_forward - [0:0]
:zone_lan_input - [0:0]
:zone_lan_output - [0:0]
:zone_lan_src_ACCEPT - [0:0]
:zone_wan_dest_ACCEPT - [0:0]
:zone_wan_dest_REJECT - [0:0]
:zone_wan_forward - [0:0]
:zone_wan_input - [0:0]
:zone_wan_output - [0:0]
:zone_wan_src_REJECT - [0:0]
[676:68691] -A INPUT -i lo -m comment --comment "!fw3" -j ACCEPT
[1516:117462] -A INPUT -m comment --comment "!fw3: Custom input rule chain" -j input_rule
[13:1039] -A INPUT -m conntrack --ctstate RELATED,ESTABLISHED -m comment --comment "!fw3" -j ACCEPT
[0:0] -A INPUT -p tcp -m tcp --tcp-flags FIN,SYN,RST,ACK SYN -m comment --comment "!fw3" -j syn_flood
[1503:116423] -A INPUT -i br-lan -m comment --comment "!fw3" -j zone_lan_input
[0:0] -A INPUT -i eth1 -m comment --comment "!fw3" -j zone_wan_input
[0:0] -A FORWARD -m comment --comment "!fw3: Custom forwarding rule chain" -j forwarding_rule
[0:0] -A FORWARD -m conntrack --ctstate RELATED,ESTABLISHED -m comment --comment "!fw3" -j ACCEPT
[0:0] -A FORWARD -i br-lan -m comment --comment "!fw3" -j zone_lan_forward
[0:0] -A FORWARD -i eth1 -m comment --comment "!fw3" -j zone_wan_forward
[0:0] -A FORWARD -m comment --comment "!fw3" -j reject
[676:68691] -A OUTPUT -o lo -m comment --comment "!fw3" -j ACCEPT
[1522:118130] -A OUTPUT -m comment --comment "!fw3: Custom output rule chain" -j output_rule
[1522:118130] -A OUTPUT -m conntrack --ctstate RELATED,ESTABLISHED -m comment --comment "!fw3" -j ACCEPT
[0:0] -A OUTPUT -o br-lan -m comment --comment "!fw3" -j zone_lan_output
[0:0] -A OUTPUT -o eth1 -m comment --comment "!fw3" -j zone_wan_output
[0:0] -A reject -p tcp -m comment --comment "!fw3" -j REJECT --reject-with tcp-reset
[0:0] -A reject -m comment --comment "!fw3" -j REJECT --reject-with icmp-port-unreachable
[0:0] -A syn_flood -p tcp -m tcp --tcp-flags FIN,SYN,RST,ACK SYN -m limit --limit 25/sec --limit-burst 50 -m comment --comment "!fw3" -j RETURN
[0:0] -A syn_flood -m comment --comment "!fw3" -j DROP
[0:0] -A zone_lan_dest_ACCEPT -o br-lan -m comment --comment "!fw3" -j ACCEPT
[0:0] -A zone_lan_forward -m comment --comment "!fw3: Custom lan forwarding rule chain" -j forwarding_lan_rule
[0:0] -A zone_lan_forward -m comment --comment "!fw3: Zone lan to wan forwarding policy" -j zone_wan_dest_ACCEPT
[0:0] -A zone_lan_forward -m conntrack --ctstate DNAT -m comment --comment "!fw3: Accept port forwards" -j ACCEPT
[0:0] -A zone_lan_forward -m comment --comment "!fw3" -j zone_lan_dest_ACCEPT
[1503:116423] -A zone_lan_input -m comment --comment "!fw3: Custom lan input rule chain" -j input_lan_rule
[0:0] -A zone_lan_input -m conntrack --ctstate DNAT -m comment --comment "!fw3: Accept port redirections" -j ACCEPT
[1503:116423] -A zone_lan_input -m comment --comment "!fw3" -j zone_lan_src_ACCEPT
[0:0] -A zone_lan_output -m comment --comment "!fw3: Custom lan output rule chain" -j output_lan_rule
[0:0] -A zone_lan_output -m comment --comment "!fw3" -j zone_lan_dest_ACCEPT
[1503:116423] -A zone_lan_src_ACCEPT -i br-lan -m conntrack --ctstate NEW,UNTRACKED -m comment --comment "!fw3" -j ACCEPT
[0:0] -A zone_wan_dest_ACCEPT -o eth1 -m conntrack --ctstate INVALID -m comment --comment "!fw3: Prevent NAT leakage" -j DROP
[0:0] -A zone_wan_dest_ACCEPT -o eth1 -m comment --comment "!fw3" -j ACCEPT
[0:0] -A zone_wan_dest_REJECT -o eth1 -m comment --comment "!fw3" -j reject
[0:0] -A zone_wan_forward -m comment --comment "!fw3: Custom wan forwarding rule chain" -j forwarding_wan_rule
[0:0] -A zone_wan_forward -p esp -m comment --comment "!fw3: Allow-IPSec-ESP" -j zone_lan_dest_ACCEPT
[0:0] -A zone_wan_forward -p udp -m udp --dport 500 -m comment --comment "!fw3: Allow-ISAKMP" -j zone_lan_dest_ACCEPT
[0:0] -A zone_wan_forward -m conntrack --ctstate DNAT -m comment --comment "!fw3: Accept port forwards" -j ACCEPT
[0:0] -A zone_wan_forward -m comment --comment "!fw3" -j zone_wan_dest_REJECT
[0:0] -A zone_wan_input -m comment --comment "!fw3: Custom wan input rule chain" -j input_wan_rule
[0:0] -A zone_wan_input -p udp -m udp --dport 68 -m comment --comment "!fw3: Allow-DHCP-Renew" -j ACCEPT
[0:0] -A zone_wan_input -p icmp -m icmp --icmp-type 8 -m comment --comment "!fw3: Allow-Ping" -j ACCEPT
[0:0] -A zone_wan_input -p igmp -m comment --comment "!fw3: Allow-IGMP" -j ACCEPT
[0:0] -A zone_wan_input -m conntrack --ctstate DNAT -m comment --comment "!fw3: Accept port redirections" -j ACCEPT
[0:0] -A zone_wan_input -m comment --comment "!fw3" -j zone_wan_src_REJECT
[0:0] -A zone_wan_output -m comment --comment "!fw3: Custom wan output rule chain" -j output_wan_rule
[0:0] -A zone_wan_output -m comment --comment "!fw3" -j zone_wan_dest_ACCEPT
[0:0] -A zone_wan_src_REJECT -i eth1 -m comment --comment "!fw3" -j reject
COMMIT
# Completed on Wed Apr 20 11:05:47 2022
# ip -4 addr
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN qlen 1000
inet 127.0.0.1/8 scope host lo
valid_lft forever preferred_lft forever
13: br-lan: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP qlen 1000
inet 192.168.1.1/24 brd 192.168.1.255 scope global br-lan
valid_lft forever preferred_lft forever
# ip -4 ro li tab all
192.168.1.0/24 dev br-lan scope link src 192.168.1.1
broadcast 127.0.0.0 dev lo table local scope link src 127.0.0.1
local 127.0.0.0/8 dev lo table local scope host src 127.0.0.1
local 127.0.0.1 dev lo table local scope host src 127.0.0.1
broadcast 127.255.255.255 dev lo table local scope link src 127.0.0.1
broadcast 192.168.1.0 dev br-lan table local scope link src 192.168.1.1
local 192.168.1.1 dev br-lan table local scope host src 192.168.1.1
broadcast 192.168.1.255 dev br-lan table local scope link src 192.168.1.1
ip -4 ru
0: from all lookup local
32766: from all lookup main
32767: from all lookup default
On Ubuntu 24.04
AT!GSTATUS?
!GSTATUS:
Current Time: 2377 Temperature: 29
Reset Counter: 1 Mode: ONLINE
System mode: LTE PS state: Attached
LTE band: B3 LTE bw: 5 MHz
LTE Rx chan: 1226 LTE Tx chan: 19226
LTE CA state: INACTIVE LTE Scell band:B20
LTE Scell bw:10 MHz LTE Scell chan:6400
EMM state: Registered Normal Service
RRC state: RRC Connected
IMS reg state: No Srv
PCC RxM RSSI: -75 RSRP (dBm): -96
PCC RxD RSSI: -67 RSRP (dBm): -88
SCC RxM RSSI: -62 RSRP (dBm): -89
SCC RxD RSSI: -52 RSRP (dBm): -73
Tx Power: -- TAC: 87A0 (34720)
RSRQ (dB): -9.3 Cell ID: 07BC3A7C (129776252)
SINR (dB): 5.2
On OpenWRT
AT!GSTATUS?
!GSTATUS:
Current Time: 104 Temperature: 26
Reset Counter: 1 Mode: ONLINE
System mode: LTE PS state: Attached
LTE band: B3 LTE bw: 5 MHz
LTE Rx chan: 1226 LTE Tx chan: 19226
LTE CA state: NOT ASSIGNED
EMM state: Registered Normal Service
RRC state: RRC Idle
IMS reg state: No Srv
PCC RxM RSSI: -67 RSRP (dBm): -93
PCC RxD RSSI: -62 RSRP (dBm): -88
Tx Power: -- TAC: 87A0 (34720)
RSRQ (dB): -10.8 Cell ID: 07BC3A7C (129776252)
SINR (dB): 3.0
OpenWRT 19 (I know, it is old but I don't have a choice for now). And TP-Link WR842ND (Another outdated hardware choice).
The modem works well in my computer with Ubuntu 24.04.
I tried to change protocol from qmi to mbim. But then in Luci the interface is non-editable and it asks about installing additional software. Probably it is luci-proto-mbim but there is no such a package.
opkg install luci-proto-mbim
Unknown package 'luci-proto-mbim'.
Help, please! 