上位机是openwrt，用rndis和ncm都会过一段时间掉usb，用rm500q-gl在mbim模式是可以正常工作的，同时麻烦发一下rm500u-cn最新的固件，想试试刷新固件会不会好
日志贴错了，故障出现时日志如下：
Mon Jul 14 22:00:47 2025 kern.info kernel: [ 333.423475] usb 2-2: USB disconnect, device number 2
Mon Jul 14 22:00:47 2025 kern.info kernel: [ 333.428706] cdc_ncm 2-2:1.0 usb0: unregister ‘cdc_ncm’ usb-0000:00:15.0-2, CDC NCM (NO ZLP)
Mon Jul 14 22:00:47 2025 kern.warn kernel: [ 333.440914] xhci_hcd 0000:00:15.0: WARN Set TR Deq Ptr cmd failed due to incorrect slot or ep state.
Mon Jul 14 22:00:47 2025 daemon.notice netifd: Network device ‘usb0’ link is down
Mon Jul 14 22:00:47 2025 daemon.notice netifd: Network alias ‘usb0’ link is down
Mon Jul 14 22:00:47 2025 daemon.notice netifd: Interface ‘wan_4’ has link connectivity loss
Mon Jul 14 22:00:47 2025 daemon.notice netifd: Interface ‘wan_6’ has link connectivity loss
Mon Jul 14 22:00:47 2025 daemon.notice ttyd[3366]: [2025/07/14 22:00:47:9146] N: rops_handle_POLLIN_netlink: DELADDR
Mon Jul 14 22:00:47 2025 daemon.notice ttyd[3366]: [2025/07/14 22:00:47:9148] N: rops_handle_POLLIN_netlink: DELADDR
Mon Jul 14 22:00:47 2025 daemon.notice ttyd[3366]: [2025/07/14 22:00:47:9170] N: rops_handle_POLLIN_netlink: DELADDR
Mon Jul 14 22:00:47 2025 daemon.notice netifd: Interface ‘wan_4’ is disabled
Mon Jul 14 22:00:47 2025 daemon.notice netifd: Interface ‘wan_6’ is disabled
Mon Jul 14 22:00:48 2025 kern.info kernel: [ 333.603463] option1 ttyUSB0: GSM modem (1-port) converter now disconnected from ttyUSB0
Mon Jul 14 22:00:48 2025 kern.info kernel: [ 333.611569] option 2-2:1.2: device disconnected
Mon Jul 14 22:00:48 2025 daemon.notice netifd: wan_4 (3938): udhcpc: SIOCGIFINDEX: No such device
Mon Jul 14 22:00:48 2025 daemon.notice netifd: wan_4 (3938): udhcpc: received SIGTERM
Mon Jul 14 22:00:48 2025 daemon.notice netifd: wan_4 (3938): udhcpc: unicasting a release of 192.168.42.2 to 192.168.42.1
Mon Jul 14 22:00:48 2025 daemon.notice netifd: wan_4 (3938): udhcpc: sending release
Mon Jul 14 22:00:48 2025 daemon.notice netifd: wan_4 (3938): udhcpc: can’t bind to interface usb0: No such device
Mon Jul 14 22:00:48 2025 daemon.notice netifd: wan_4 (3938): udhcpc: bindtodevice: No such device
Mon Jul 14 22:00:48 2025 daemon.notice netifd: wan_4 (3938): udhcpc: entering released state
Mon Jul 14 22:00:48 2025 kern.info kernel: [ 333.616272] option1 ttyUSB1: GSM modem (1-port) converter now disconnected from ttyUSB1
Mon Jul 14 22:00:48 2025 kern.info kernel: [ 333.624392] option 2-2:1.3: device disconnected
Mon Jul 14 22:00:48 2025 daemon.notice netifd: wan_4 (3938): Command failed: ubus call network.interface notify_proto { “action”: 0, “link-up”: false, “keep”: false, “interface”: “wan_4” } (Permission denied)
Mon Jul 14 22:00:48 2025 daemon.notice netifd: Interface ‘wan_4’ is now down
Mon Jul 14 22:00:48 2025 kern.info kernel: [ 333.629098] option1 ttyUSB2: GSM modem (1-port) converter now disconnected from ttyUSB2
Mon Jul 14 22:00:48 2025 kern.info kernel: [ 333.637220] option 2-2:1.4: device disconnected
Mon Jul 14 22:00:48 2025 kern.info kernel: [ 333.641922] option1 ttyUSB3: GSM modem (1-port) converter now disconnected from ttyUSB3
Mon Jul 14 22:00:48 2025 kern.info kernel: [ 333.650016] option 2-2:1.5: device disconnected
Mon Jul 14 22:00:48 2025 kern.info kernel: [ 333.654717] option1 ttyUSB4: GSM modem (1-port) converter now disconnected from ttyUSB4
Mon Jul 14 22:00:48 2025 kern.info kernel: [ 333.662816] option 2-2:1.6: device disconnected
Mon Jul 14 22:00:48 2025 daemon.notice netifd: wan (5077): Control device not valid
Mon Jul 14 22:00:48 2025 daemon.notice netifd: Interface ‘wan’ is now down
Mon Jul 14 22:00:48 2025 daemon.err odhcp6c[3941]: Failed to send SOLICIT message to ff02::1:2 (Network unreachable)
Mon Jul 14 22:00:48 2025 daemon.notice netifd: Interface ‘wan_6’ is now down
Mon Jul 14 22:01:03 2025 kern.info kernel: [ 348.704330] usb 2-2: new SuperSpeed USB device number 3 using xhci_hcd
Mon Jul 14 22:01:03 2025 kern.warn kernel: [ 348.738894] usb 2-2: Enable of device-initiated U1 failed.
Mon Jul 14 22:01:03 2025 kern.warn kernel: [ 348.744730] usb 2-2: Enable of device-initiated U2 failed.
Mon Jul 14 22:01:03 2025 kern.info kernel: [ 348.764676] cdc_ncm 2-2:1.0: MAC-Address: 32:46:1c:44:72:b6
Mon Jul 14 22:01:03 2025 kern.info kernel: [ 348.770522] cdc_ncm 2-2:1.0 usb0: register ‘cdc_ncm’ at usb-0000:00:15.0-2, CDC NCM (NO ZLP), 32:46:1c:44:72:b6
Mon Jul 14 22:01:03 2025 kern.warn kernel: [ 348.780890] usb 2-2: Enable of device-initiated U1 failed.
Mon Jul 14 22:01:03 2025 kern.warn kernel: [ 348.786631] usb 2-2: Enable of device-initiated U2 failed.
Mon Jul 14 22:01:03 2025 kern.info kernel: [ 348.792635] option 2-2:1.2: GSM modem (1-port) converter detected
Mon Jul 14 22:01:03 2025 kern.info kernel: [ 348.798863] usb 2-2: GSM modem (1-port) converter now attached to ttyUSB0
Mon Jul 14 22:01:03 2025 kern.info kernel: [ 348.805905] option 2-2:1.3: GSM modem (1-port) converter detected
Mon Jul 14 22:01:03 2025 kern.info kernel: [ 348.812096] usb 2-2: GSM modem (1-port) converter now attached to ttyUSB1
Mon Jul 14 22:01:03 2025 kern.info kernel: [ 348.819136] option 2-2:1.4: GSM modem (1-port) converter detected
Mon Jul 14 22:01:03 2025 kern.info kernel: [ 348.825335] usb 2-2: GSM modem (1-port) converter now attached to ttyUSB2
Mon Jul 14 22:01:03 2025 kern.info kernel: [ 348.832361] option 2-2:1.5: GSM modem (1-port) converter detected
Mon Jul 14 22:01:03 2025 kern.info kernel: [ 348.838561] usb 2-2: GSM modem (1-port) converter now attached to ttyUSB3
Mon Jul 14 22:01:03 2025 kern.info kernel: [ 348.845595] option 2-2:1.6: GSM modem (1-port) converter detected
Mon Jul 14 22:01:03 2025 kern.info kernel: [ 348.851786] usb 2-2: GSM modem (1-port) converter now attached to ttyUSB4
Mon Jul 14 22:01:03 2025 daemon.notice netifd: Interface ‘wan’ is setting up now
Mon Jul 14 22:01:04 2025 daemon.notice netifd: wan (5326): comgt 22:01:04 → – Error Report –
Mon Jul 14 22:01:04 2025 daemon.notice netifd: wan (5326): comgt 22:01:04 → ----> ^
Mon Jul 14 22:01:04 2025 daemon.notice netifd: wan (5326): comgt 22:01:04 → Error @118, line 9, Could not write to COM device. (1)
Mon Jul 14 22:01:04 2025 daemon.notice netifd: wan (5326):
Mon Jul 14 22:01:35 2025 daemon.notice netifd: wan (5326): comgt 22:01:35 → – Error Report –
Mon Jul 14 22:01:35 2025 daemon.notice netifd: wan (5326): comgt 22:01:35 → ----> ^
Mon Jul 14 22:01:35 2025 daemon.notice netifd: wan (5326): comgt 22:01:35 → Error @118, line 9, Could not write to COM device. (1)
Mon Jul 14 22:01:35 2025 daemon.notice netifd: wan (5326):
usb断连了
好像找到问题了，模组是AB的，刷成AA的固件了，麻烦求一份AB的固件
IMEI：868227051469856
目前固件版本：RM500UCNAAR01A19M2G_01.001.01.001
邮箱：986952574@qq.com
Hi @blackjack
这个你之前查过版本吗？我看出厂就是这个版本啊，看着不像是版本的问题。