EC200T-CN SIM Module Not Working In OpenWrt

The Quectel EC20 and EC25 module is working perfectly in my OpenWrt router. The Quectel EC200T-CN LTE module is not even detected by my router. For Quectel EC20 and EC25 modules, I was using QMI Protocol.

kernel logs:

root@PI-25_Pro:~# dmesg
[    0.000000] Linux version 4.14.241 (root@Piscis) (gcc version 7.5.0 (OpenWrt GCC 7.5.0 r11364-ef56c85848)) #0 SMP Thu Jul 29 19:50:28 2021
[    0.000000] SoC Type: MediaTek MT7621 ver:1 eco:3
[    0.000000] bootconsole [early0] enabled
[    0.000000] CPU0 revision is: 0001992f (MIPS 1004Kc)
[    0.000000] MIPS: machine is ZBT-WG1602
[    0.000000] Determined physical RAM map:
[    0.000000]  memory: 10000000 @ 00000000 (usable)
[    0.000000] Initrd not found or empty - disabling initrd
[    0.000000] VPE topology {2,2} total 4
[    0.000000] Primary instruction cache 32kB, VIPT, 4-way, linesize 32 bytes.
[    0.000000] Primary data cache 32kB, 4-way, PIPT, no aliases, linesize 32 bytes
[    0.000000] MIPS secondary cache 256kB, 8-way, linesize 32 bytes.
[    0.000000] Zone ranges:
[    0.000000]   Normal   [mem 0x0000000000000000-0x000000000fffffff]
[    0.000000]   HighMem  empty
[    0.000000] Movable zone start for each node
[    0.000000] Early memory node ranges
[    0.000000]   node   0: [mem 0x0000000000000000-0x000000000fffffff]
[    0.000000] Initmem setup node 0 [mem 0x0000000000000000-0x000000000fffffff]
[    0.000000] On node 0 totalpages: 65536
[    0.000000] free_area_init_node: node 0, pgdat 805cbde0, node_mem_map 81003000
[    0.000000]   Normal zone: 512 pages used for memmap
[    0.000000]   Normal zone: 0 pages reserved
[    0.000000]   Normal zone: 65536 pages, LIFO batch:15
[    0.000000] random: get_random_bytes called from start_kernel+0x94/0x4ac with crng_init=0
[    0.000000] percpu: Embedded 14 pages/cpu s26256 r8192 d22896 u57344
[    0.000000] pcpu-alloc: s26256 r8192 d22896 u57344 alloc=14*4096
[    0.000000] pcpu-alloc: [0] 0 [0] 1 [0] 2 [0] 3
[    0.000000] Built 1 zonelists, mobility grouping on.  Total pages: 65024
[    0.000000] Kernel command line: console=ttyS0,115200 rootfstype=squashfs,jffs2
[    0.000000] PID hash table entries: 1024 (order: 0, 4096 bytes)
[    0.000000] Dentry cache hash table entries: 32768 (order: 5, 131072 bytes)
[    0.000000] Inode-cache hash table entries: 16384 (order: 4, 65536 bytes)
[    0.000000] Writing ErrCtl register=00030400
[    0.000000] Readback ErrCtl register=00030400
[    0.000000] Memory: 252084K/262144K available (4667K kernel code, 234K rwdata, 1024K rodata, 1292K init, 250K bss, 10060K reserved, 0K cma-reserved, 0K highmem)
[    0.000000] SLUB: HWalign=32, Order=0-3, MinObjects=0, CPUs=4, Nodes=1
[    0.000000] Hierarchical RCU implementation.
[    0.000000] NR_IRQS: 256
[    0.000000] CPU Clock: 880MHz
[    0.000000] clocksource: GIC: mask: 0xffffffffffffffff max_cycles: 0xcaf478abb4, max_idle_ns: 440795247997 ns
[    0.000000] clocksource: MIPS: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 4343773742 ns
[    0.000010] sched_clock: 32 bits at 440MHz, resolution 2ns, wraps every 4880645118ns
[    0.007833] Calibrating delay loop... 586.13 BogoMIPS (lpj=2930688)
[    0.074005] pid_max: default: 32768 minimum: 301
[    0.078784] Mount-cache hash table entries: 1024 (order: 0, 4096 bytes)
[    0.085294] Mountpoint-cache hash table entries: 1024 (order: 0, 4096 bytes)
[    0.094266] Hierarchical SRCU implementation.
[    0.099485] smp: Bringing up secondary CPUs ...
[    0.105591] Primary instruction cache 32kB, VIPT, 4-way, linesize 32 bytes.
[    0.105600] Primary data cache 32kB, 4-way, PIPT, no aliases, linesize 32 bytes
[    0.105614] MIPS secondary cache 256kB, 8-way, linesize 32 bytes.
[    0.105759] CPU1 revision is: 0001992f (MIPS 1004Kc)
[    0.164269] Synchronize counters for CPU 1: done.
[    0.206037] Primary instruction cache 32kB, VIPT, 4-way, linesize 32 bytes.
[    0.206045] Primary data cache 32kB, 4-way, PIPT, no aliases, linesize 32 bytes
[    0.206053] MIPS secondary cache 256kB, 8-way, linesize 32 bytes.
[    0.206124] CPU2 revision is: 0001992f (MIPS 1004Kc)
[    0.255606] Synchronize counters for CPU 2: done.
[    0.286904] Primary instruction cache 32kB, VIPT, 4-way, linesize 32 bytes.
[    0.286913] Primary data cache 32kB, 4-way, PIPT, no aliases, linesize 32 bytes
[    0.286920] MIPS secondary cache 256kB, 8-way, linesize 32 bytes.
[    0.287000] CPU3 revision is: 0001992f (MIPS 1004Kc)
[    0.340787] Synchronize counters for CPU 3: done.
[    0.370645] smp: Brought up 1 node, 4 CPUs
[    0.378527] clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604462750000 ns
[    0.388326] futex hash table entries: 1024 (order: 3, 32768 bytes)
[    0.394633] pinctrl core: initialized pinctrl subsystem
[    0.401333] NET: Registered protocol family 16
[    0.416676] FPU Affinity set after 11720 emulations
[    0.417420] pull PCIe RST: RALINK_RSTCTRL = 0
[    0.722134] release PCIe RST: RALINK_RSTCTRL = 7000000
[    0.727167] ***** Xtal 40MHz *****
[    0.730543] release PCIe RST: RALINK_RSTCTRL = 7000000
[    0.735654] Port 0 N_FTS = 1b102800
[    0.739090] Port 1 N_FTS = 1b102800
[    0.742550] Port 2 N_FTS = 1b102800
[    1.897785] PCIE2 no card, disable it(RST&CLK)
[    1.902133]  -> 21007f2
[    1.904549] PCIE0 enabled
[    1.907163] PCIE1 enabled
[    1.909744] PCI host bridge /pcie@1e140000 ranges:
[    1.914507]  MEM 0x0000000060000000..0x000000006fffffff
[    1.919689]   IO 0x000000001e160000..0x000000001e16ffff
[    1.924862] PCI coherence region base: 0xbfbf8000, mask/settings: 0x60000000
[    1.940665] mt7621_gpio 1e000600.gpio: registering 32 gpios
[    1.946486] mt7621_gpio 1e000600.gpio: registering 32 gpios
[    1.952186] mt7621_gpio 1e000600.gpio: registering 32 gpios
[    1.959331] PCI host bridge to bus 0000:00
[    1.963369] pci_bus 0000:00: root bus resource [mem 0x60000000-0x6fffffff]
[    1.970226] pci_bus 0000:00: root bus resource [io  0x1e160000-0x1e16ffff]
[    1.977004] pci_bus 0000:00: root bus resource [??? 0x00000000 flags 0x0]
[    1.983760] pci_bus 0000:00: No busn resource found for root bus, will use [bus 00-ff]
[    1.991652] pci 0000:00:00.0: [0e8d:0801] type 01 class 0x060400
[    1.991694] pci 0000:00:00.0: reg 0x10: [mem 0x00000000-0x7fffffff]
[    1.991706] pci 0000:00:00.0: reg 0x14: [mem 0x00000000-0x0000ffff]
[    1.991775] pci 0000:00:00.0: supports D1
[    1.991785] pci 0000:00:00.0: PME# supported from D0 D1 D3hot
[    1.992033] pci 0000:00:01.0: [0e8d:0801] type 01 class 0x060400
[    1.992062] pci 0000:00:01.0: reg 0x10: [mem 0x00000000-0x7fffffff]
[    1.992076] pci 0000:00:01.0: reg 0x14: [mem 0x00000000-0x0000ffff]
[    1.992127] pci 0000:00:01.0: supports D1
[    1.992135] pci 0000:00:01.0: PME# supported from D0 D1 D3hot
[    1.992365] pci 0000:00:00.0: bridge configuration invalid ([bus 00-00]), reconfiguring
[    2.000306] pci 0000:00:01.0: bridge configuration invalid ([bus 00-00]), reconfiguring
[    2.008397] pci 0000:01:00.0: [14c3:7603] type 00 class 0x028000
[    2.008446] pci 0000:01:00.0: reg 0x10: [mem 0x00000000-0x000fffff]
[    2.008579] pci 0000:01:00.0: PME# supported from D0 D3hot D3cold
[    2.008765] pci_bus 0000:01: busn_res: [bus 01-ff] end is updated to 01
[    2.008948] pci 0000:02:00.0: [14c3:7662] type 00 class 0x028000
[    2.009004] pci 0000:02:00.0: reg 0x10: [mem 0x00000000-0x000fffff 64bit]
[    2.009050] pci 0000:02:00.0: reg 0x30: [mem 0x00000000-0x0000ffff pref]
[    2.009141] pci 0000:02:00.0: PME# supported from D0 D3hot D3cold
[    2.009332] pci_bus 0000:02: busn_res: [bus 02-ff] end is updated to 02
[    2.009352] pci_bus 0000:00: busn_res: [bus 00-ff] end is updated to 02
[    2.009430] pci 0000:00:00.0: BAR 0: no space for [mem size 0x80000000]
[    2.015983] pci 0000:00:00.0: BAR 0: failed to assign [mem size 0x80000000]
[    2.022857] pci 0000:00:01.0: BAR 0: no space for [mem size 0x80000000]
[    2.029448] pci 0000:00:01.0: BAR 0: failed to assign [mem size 0x80000000]
[    2.036342] pci 0000:00:00.0: BAR 8: assigned [mem 0x60000000-0x600fffff]
[    2.043093] pci 0000:00:01.0: BAR 8: assigned [mem 0x60100000-0x601fffff]
[    2.049812] pci 0000:00:01.0: BAR 9: assigned [mem 0x60200000-0x602fffff pref]
[    2.057004] pci 0000:00:00.0: BAR 1: assigned [mem 0x60300000-0x6030ffff]
[    2.063734] pci 0000:00:01.0: BAR 1: assigned [mem 0x60310000-0x6031ffff]
[    2.070500] pci 0000:01:00.0: BAR 0: assigned [mem 0x60000000-0x600fffff]
[    2.077206] pci 0000:00:00.0: PCI bridge to [bus 01]
[    2.082148] pci 0000:00:00.0:   bridge window [mem 0x60000000-0x600fffff]
[    2.088879] pci 0000:02:00.0: BAR 0: assigned [mem 0x60100000-0x601fffff 64bit]
[    2.096154] pci 0000:02:00.0: BAR 6: assigned [mem 0x60200000-0x6020ffff pref]
[    2.103291] pci 0000:00:01.0: PCI bridge to [bus 02]
[    2.108242] pci 0000:00:01.0:   bridge window [mem 0x60100000-0x601fffff]
[    2.114961] pci 0000:00:01.0:   bridge window [mem 0x60200000-0x602fffff pref]
[    2.123504] clocksource: Switched to clocksource GIC
[    2.129876] NET: Registered protocol family 2
[    2.134456] IP idents hash table entries: 4096 (order: 3, 32768 bytes)
[    2.141629] TCP established hash table entries: 2048 (order: 1, 8192 bytes)
[    2.148572] TCP bind hash table entries: 2048 (order: 2, 16384 bytes)
[    2.154967] TCP: Hash tables configured (established 2048 bind 2048)
[    2.161378] UDP hash table entries: 256 (order: 1, 8192 bytes)
[    2.167194] UDP-Lite hash table entries: 256 (order: 1, 8192 bytes)
[    2.173696] NET: Registered protocol family 1
[    2.178024] PCI: CLS 0 bytes, default 32
[    2.413453] 4 CPUs re-calibrate udelay(lpj = 2924544)
[    2.419853] Crashlog allocated RAM at address 0x3f00000
[    2.425288] workingset: timestamp_bits=30 max_order=16 bucket_order=0
[    2.439473] squashfs: version 4.0 (2009/01/31) Phillip Lougher
[    2.445257] jffs2: version 2.2 (NAND) (SUMMARY) (LZMA) (RTIME) (CMODE_PRIORITY) (c) 2001-2006 Red Hat, Inc.
[    2.457097] random: fast init done
[    2.461651] io scheduler noop registered
[    2.465535] io scheduler deadline registered (default)
[    2.471411] gpio-export gpio_export: 3 gpio(s) exported
[    2.477589] Serial: 8250/16550 driver, 3 ports, IRQ sharing disabled
[    2.485365] console [ttyS0] disabled
[    2.497c8CDCHLcRr3k3Qo6b1hNHB8ySdfnSwMBKfnhcNviT6GUftPy4uoNhDfPmkqAV4E2eGXa5eRNLoZnc4xkxbmij7PfENwd
[    2.497978] console [ttyS0] enabled
[    2.504857] bootconsole [early0] disabled
[    2.515224] MediaTek Nand driver init, version v2.1 Fix AHB virt2phys error
[    2.522541] spi-mt7621 1e000b00.spi: sys_freq: 220000000
[    2.537591] m25p80 spi0.0: w25q128 (16384 Kbytes)
[    2.542335] 4 fixed-partitions partitions found on MTD device spi0.0
[    2.548690] Creating 4 MTD partitions on "spi0.0":
[    2.553494] 0x000000000000-0x000000030000 : "u-boot"
[    2.559458] 0x000000030000-0x000000040000 : "u-boot-env"
[    2.565735] 0x000000040000-0x000000050000 : "factory"
[    2.571590] 0x000000050000-0x000001000000 : "firmware"
[    2.577864] 2 uimage-fw partitions found on MTD device firmware
[    2.583812] Creating 2 MTD partitions on "firmware":
[    2.588763] 0x000000000000-0x0000001e10c3 : "kernel"
[    2.594646] 0x0000001e10c3-0x000000fb0000 : "rootfs"
[    2.600419] mtd: device 5 (rootfs) set to be root filesystem
[    2.606231] 1 squashfs-split partitions found on MTD device rootfs
[    2.612393] 0x000000b00000-0x000000fb0000 : "rootfs_data"
[    2.619455] libphy: Fixed MDIO Bus: probed
[    2.695531] libphy: mdio: probed
[    4.098416] mtk_soc_eth 1e100000.ethernet: loaded mt7530 driver
[    4.105142] mtk_soc_eth 1e100000.ethernet eth0: mediatek frame engine at 0xbe100000, irq 22
[    4.116387] NET: Registered protocol family 10
[    4.122492] Segment Routing with IPv6
[    4.126339] NET: Registered protocol family 17
[    4.130830] 8021q: 802.1Q VLAN Support v1.8
[    4.137730] hctosys: unable to open rtc device (rtc0)
[    4.151652] VFS: Mounted root (squashfs filesystem) readonly on device 31:5.
[    4.163897] Freeing unused kernel memory: 1292K
[    4.168444] This architecture does not have kernel memory protection.
[    4.955922] init: Console is alive
[    4.959582] init: - watchdog -
[    5.933552] mtk_soc_eth 1e100000.ethernet eth0: port 0 link up
[    7.102982] kmodloader: loading kernel modules from /etc/modules-boot.d/*
[    7.188120] usbcore: registered new interface driver usbfs
[    7.193785] usbcore: registered new interface driver hub
[    7.199213] usbcore: registered new device driver usb
[    7.232697] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
[    7.240648] ehci-platform: EHCI generic platform driver
[    7.248117] ohci_hcd: USB 1.1 'Open' Host Controller (OHCI) Driver
[    7.255697] ohci-platform: OHCI generic platform driver
[    7.267781] xhci-mtk 1e1c0000.xhci: 1e1c0000.xhci supply vbus not found, using dummy regulator
[    7.276573] xhci-mtk 1e1c0000.xhci: 1e1c0000.xhci supply vusb33 not found, using dummy regulator
[    7.285561] xhci-mtk 1e1c0000.xhci: xHCI Host Controller
[    7.290882] xhci-mtk 1e1c0000.xhci: new USB bus registered, assigned bus number 1
[    7.303663] xhci-mtk 1e1c0000.xhci: hcc params 0x01401198 hci version 0x96 quirks 0x0000000000290010
[    7.312845] xhci-mtk 1e1c0000.xhci: irq 21, io mem 0x1e1c0000
[    7.319704] hub 1-0:1.0: USB hub found
[    7.323597] hub 1-0:1.0: 2 ports detected
[    7.328247] xhci-mtk 1e1c0000.xhci: xHCI Host Controller
[    7.333612] xhci-mtk 1e1c0000.xhci: new USB bus registered, assigned bus number 2
[    7.341076] xhci-mtk 1e1c0000.xhci: Host supports USB 3.0  SuperSpeed
[    7.347698] usb usb2: We don't know the algorithms for LPM for this host, disabling LPM.
[    7.356721] hub 2-0:1.0: USB hub found
[    7.360549] hub 2-0:1.0: 1 port detected
[    7.435765] sdhci: Secure Digital Host Controller Interface driver
[    7.441944] sdhci: Copyright(c) Pierre Ossman
[    7.448322] sdhci-pltfm: SDHCI platform and OF driver helper
[    7.456673] kmodloader: done loading kernel modules from /etc/modules-boot.d/*
[    7.473899] init: - preinit -
[    9.091602] mtk_soc_eth 1e100000.ethernet: PPE started
[   12.508621] jffs2: notice: (497c8CDCHLcRr3k3Qo6b1hNHB8ySdfnSwMBKfnhcNviT6GUftPy4uoNhDfPmkqAV4E2eGXa5eRNLoZnc4xkxbmij7PfENwd4 orphan) and 41 of xref (11 dead, 0 orphan) found.
[   12.526418] mount_root: switching to jffs2 overlay
[   13.119968] overlayfs: upper fs does not support tmpfile.
[   13.137748] urandom-seed: Seeding with /etc/urandom.seed
[   13.230869] mtk_soc_eth 1e100000.ethernet: 0x100 = 0x6060000c, 0x10c = 0x80818
[   13.246677] procd: - early -
[   13.249667] procd: - watchdog -
[   13.505731] random: crng init done
[   13.913832] procd: - watchdog -
[   13.917574] procd: - ubus -
[   14.076561] procd: - init -
[   15.617655] kmodloader: loading kernel modules from /etc/modules.d/*
[   15.685162] usb 1-1: new high-speed USB device number 2 using xhci-mtk
[   15.692963] NET: Registered protocol family 38
[   15.711878] NET: Registered protocol family 15
[   15.720924] Initializing XFRM netlink socket
[   15.728571] tun: Universal TUN/TAP device driver, 1.6
[   15.766831] l2tp_core: L2TP core driver, V2.0
[   15.772951] l2tp_netlink: L2TP netlink interface
[   15.791757] ip6_tables: (C) 2000-2006 Netfilter Core Team
[   15.805039] Netfilter messages via NETLINK v0.30.
[   15.813367] ip_set: protocol 6
[   15.857248] Mirror/redirect action on
[   15.872414] urngd: v1.0.2 started.
[   15.874605] u32 classifier
[   15.878545]     input device check on
[   15.882192]     Actions configured
[   15.912100] nf_conntrack version 0.5.0 (4096 buckets, 16384 max)
[   15.928188] usbcore: registered new interface driver cdc_wdm
[   15.936254] Loading modules backported from Linux version v4.19.193-0-g1722257b8ece
[   15.943943] Backport generated by backports.git v4.19.193-1-0-gaa2cc8ea
[   15.954751] ip_tables: (C) 2000-2006 Netfilter Core Team
[   15.968814] ctnetlink v0.93: registering with nfnetlink.
[   16.054979] usbcore: registered new interface driver usbserial
[   16.061007] usbcore: registered new interface driver usbserial_generic
[   16.067702] usbserial: USB Serial support registered for generic
[   16.112535] xt_time: kernel timezone is -0000
[   16.240776] bus=0x1, slot = 0x0, irq=0xff
[   16.244882] PCI: Enabling device 0000:00:00.0 (0004 -> 0006)
[   16.250738] mt7603e 0000:01:00.0: ASIC revision: 76030010
[   17.016450] usb 1-1: USB disconnect, device number 2
[   17.286465] mt7603e 0000:01:00.0: Firmware Version: ap_pcie
[   17.292042] mt7603e 0000:01:00.0: Build Time: 20160107100755
[   17.333520] mt7603e 0000:01:00.0: firmware init done
[   17.509047] ieee80211 phy0: Selected rate control algorithm 'minstrel_ht'
[   17.527802] bus=0x2, slot = 0x1, irq=0xff
[   17.531920] PCI: Enabling device 0000:00:01.0 (0004 -> 0006)
[   17.537935] mt76x2e 0000:02:00.0: ASIC revision: 76120044
[   18.270264] mt76x2e 0000:02:00.0: ROM patch build: 20141115060606a
[   18.280130] mt76x2e 0000:02:00.0: Firmware Version: 0.0.00
[   18.285653] mt76x2e 0000:02:00.0: Build: 1
[   18.289730] mt76x2e 0000:02:00.0: Build Time: 201507311614____
[   18.313507] mt76x2e 0000:02:00.0: Firmware running!
[   18.321390] ieee80211 phy1: Selected rate control algorithm 'minstrel_ht'
[   18.330771] PPP generic driver version 2.4.2
[   18.337518] NET: Registered protocol family 24
[   18.345566] usbcore: registered new interface driver qmi_wwan
[   18.357351] l2tp_ppp: PPPoL2TP kernel driver, V2.0
[   18.364236] usbcore: registered new interface driver option
[   18.370005] usbserial: USB Serial support registered for GSM modem (1-port)
[   18.381184] kmodloader: done loading kernel modules from /etc/modules.d/*
[   21.853683] usb 1-1: new high-speed USB device number 3 using xhci-mtk
[   22.059017] option 1-1:1.2: GSM modem (1-port) converter detected
[   22.065697] usb 1-1: GSM modem (1-port) converter now attached to ttyUSB0
[   22.074555] option 1-1:1.3: GSM modem (1-port) converter detected
[   22.081196] usb 1-1: GSM modem (1-port) converter now attached to ttyUSB1
[   22.089449] option 1-1:1.4: GSM modem (1-port) converter detected
[   22.096165] usb 1-1: GSM modem (1-port) converter now attached to ttyUSB2
[   27.735115] mtk_soc_eth 1e100000.ethernet: PPE started
[   27.748140] br-lan: port 1(eth0.1) entered blocking state
[   27.753608] br-lan: port 1(eth0.1) entered disabled state
[   27.759718] device eth0.1 entered promiscuous mode
[   27.764829] device eth0 entered promiscuous mode
[   27.774478] br-lan: port 1(eth0.1) entered blocking state
[   27.779908] br-lan: port 1(eth0.1) entered forwarding state
[   27.786016] IPv6: ADDRCONF(NETDEV_UP): br-lan: link is not ready
[   28.850020] IPv6: ADDRCONF(NETDEV_CHANGE): br-lan: link becomes ready
[   32.107158] IPv6: ADDRCONF(NETDEV_UP): wlan1: link is not ready
[   32.124881] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready
[   32.135565] br-lan: port 2(wlan1) entered blocking state
[   32.140911] br-lan: port 2(wlan1) entered disabled state
[   32.147188] device wlan1 entered promiscuous mode
[   32.152411] br-lan: port 3(wlan0) entered blocking state
[   32.157892] br-lan: port 3(wlan0) entered disabled state
[   32.164174] device wlan0 entered promiscuous mode
[   32.169431] br-lan: port 3(wlan0) entered blocking state
[   32.174850] br-lan: port 3(wlan0) entered forwarding state
[   32.863610] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready
[   33.917669] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready
[   33.924730] br-lan: port 2(wlan1) entered blocking state
[   33.930129] br-lan: port 2(wlan1) entered forwarding state
root@PI-25_Pro:~#

Please help me with this problem.
Thanks!

Your question is already answered in OpenWrt forum. Your modem is in ECM mode and you need to send some AT commands to setup a connection.

Can you tell me the difference between EC20 and EC200T-CN like why EC20 is working via QMI Protocol and EC200T-CN not working?
Thanks!

I don’t think Quectel ever advertised QMI support for EC200. I’m uncertain about MBIM.
EC200T datasheet mentions RNDIS and ECM only, but EC200T-EU-HA Release Notes mentions also MBIM.

Can you provide me with the link to the datasheet?