# RC7620-1 not available after update with "qmi-update-firmware" **URL:** \ **Category:** RC76\ **Tags:** fw-upgrade\ **Created:** [September 27, 2023, 8:04am UTC](https://forum.sierrawireless.com/t/rc7620-1-not-available-after-update-with-qmi-update-firmware/30723 "2023-09-27T08:04:18Z")\ **Posts on this page:** 7\ **Page:** 1
**Author:** ![JFTWIT](https://avatars.discourse-cdn.com/v4/letter/j/d2c977/32.png) [@JFTWIT](https://forum.sierrawireless.com/u/JFTWIT)\ **Post date:** [September 27, 2023, 8:04am UTC](https://forum.sierrawireless.com/t/rc7620-1-not-available-after-update-with-qmi-update-firmware/30723/1 "2023-09-27T08:04:18Z")
Hello, after updating an RC7620-1 with the latest firmware, the modem loops on the USB connect/disconnect part. I think it keeps rebooting. What is the method for recovering the modem? Thank you for your help. usb 1-1.1: new high-speed USB device number 113 using ci\_hdrc usb 1-1.1: config 1 has an invalid interface number: 8 but max is 3 usb 1-1.1: config 1 has no interface number 1 usb 1-1.1: New USB device found, idVendor=1199, idProduct=68c0 usb 1-1.1: New USB device strings: Mfr=3, Product=2, SerialNumber=4 usb 1-1.1: Product: Sierra Wireless RC7620-1 usb 1-1.1: Manufacturer: Sierra Wireless, Incorporated usb 1-1.1: SerialNumber: 7T2473515007A120 qcserial 1-1.1:1.0: Qualcomm USB modem converter detected usb 1-1.1: Qualcomm USB modem converter now attached to ttyUSB0 qcserial 1-1.1:1.2: Qualcomm USB modem converter detected usb 1-1.1: Qualcomm USB modem converter now attached to ttyUSB1 qcserial 1-1.1:1.3: Qualcomm USB modem converter detected usb 1-1.1: Qualcomm USB modem converter now attached to ttyUSB2 qmi\_wwan 1-1.1:1.8: cdc-wdm0: USB WDM device qmi\_wwan 1-1.1:1.8 wwan0: register ‘qmi\_wwan’ at usb-ci\_hdrc.1-1.1, WWAN/QMI dev ice, ee:0a:1e:50:28:98 usb 1-1.1: USB disconnect, device number 113 qcserial ttyUSB0: Qualcomm USB modem converter now disconnected from ttyUSB0 qcserial 1-1.1:1.0: device disconnected qcserial ttyUSB1: Qualcomm USB modem converter now disconnected from ttyUSB1 qcserial 1-1.1:1.2: device disconnected qcserial ttyUSB2: Qualcomm USB modem converter now disconnected from ttyUSB2 qcserial 1-1.1:1.3: device disconnected qmi\_wwan 1-1.1:1.8 wwan0: unregister ‘qmi\_wwan’ usb-ci\_hdrc.1-1.1, WWAN/QMI devi ce ---
**Author:** ![jyijyi](https://sea1.discourse-cdn.com/flex025/user_avatar/forum.sierrawireless.com/jyijyi/32/4766_2.png) [@jyijyi](https://forum.sierrawireless.com/u/jyijyi)\ **Post date:** [September 27, 2023, 8:13am UTC](https://forum.sierrawireless.com/t/rc7620-1-not-available-after-update-with-qmi-update-firmware/30723/2 "2023-09-27T08:13:58Z")
have you tried to trigger the TP1 (pin 47) to download mode and download some FW again? ![image](https://us1.discourse-cdn.com/flex025/uploads/sierrawireless/original/2X/1/19941947852c3f765e0f38c6a7b9bee76a7b0e24.png) ```auto For example: jordan@jordan-X240:~/QMI/MBPL/MBPL_SDK_R28_ENG5-fwdwl.bin/SampleApps/lite-fw-download$ sudo ./bin/fwdwl-litehostx86_64 -c QMI -m 4 -d /dev/ttyUSB0 -f /home/jordan/Downloads/FW_EM74x1/SWI9X50C_01.14.03.00_GENERIC_002.036_010/ ``` ---
**Author:** ![JFTWIT](https://avatars.discourse-cdn.com/v4/letter/j/d2c977/32.png) [@JFTWIT](https://forum.sierrawireless.com/u/JFTWIT)\ **Post date:** [September 27, 2023, 9:24am UTC](https://forum.sierrawireless.com/t/rc7620-1-not-available-after-update-with-qmi-update-firmware/30723/3 "2023-09-27T09:24:40Z")
Thank you for your reply. I will check with the hardware people to order this pin and use “fwdwl-litearm” in your order as my target is ARM 32 Bits. But in your order I don’t see the name of the update file. It is the file “RC76xx\_Release9.6.1\_GENERIC\_7620.spk”. ---
**Author:** ![jyijyi](https://sea1.discourse-cdn.com/flex025/user_avatar/forum.sierrawireless.com/jyijyi/32/4766_2.png) [@jyijyi](https://forum.sierrawireless.com/u/jyijyi)\ **Post date:** [September 27, 2023, 9:39am UTC](https://forum.sierrawireless.com/t/rc7620-1-not-available-after-update-with-qmi-update-firmware/30723/4 "2023-09-27T09:39:53Z")
My example is just for EM module You can change the filename ---
**Author:** ![JFTWIT](https://avatars.discourse-cdn.com/v4/letter/j/d2c977/32.png) [@JFTWIT](https://forum.sierrawireless.com/u/JFTWIT)\ **Post date:** [September 27, 2023, 3:24pm UTC](https://forum.sierrawireless.com/t/rc7620-1-not-available-after-update-with-qmi-update-firmware/30723/5 "2023-09-27T15:24:48Z")
Here’s the result of the recommended manipulation: 😒 ![image](https://us1.discourse-cdn.com/flex025/uploads/sierrawireless/original/2X/8/8c10a65dbec9db90d97a7ddc6bc5724ed5c24fad.png) What does this error mean? How can I correct it? Thank you for your help. ---
**Author:** ![jyijyi](https://sea1.discourse-cdn.com/flex025/user_avatar/forum.sierrawireless.com/jyijyi/32/4766_2.png) [@jyijyi](https://forum.sierrawireless.com/u/jyijyi)\ **Post date:** [September 27, 2023, 3:29pm UTC](https://forum.sierrawireless.com/t/rc7620-1-not-available-after-update-with-qmi-update-firmware/30723/6 "2023-09-27T15:29:02Z")
does same procedure work in anther OK module? This is to ensure the recovery method is OK for all module triggering TP1 boot pin. ---
**Author:** ![JFTWIT](https://avatars.discourse-cdn.com/v4/letter/j/d2c977/32.png) [@JFTWIT](https://forum.sierrawireless.com/u/JFTWIT)\ **Post date:** [September 27, 2023, 3:53pm UTC](https://forum.sierrawireless.com/t/rc7620-1-not-available-after-update-with-qmi-update-firmware/30723/7 "2023-09-27T15:53:12Z")
I think I’ve figured out the problem thanks to the fwdwl.log file: the qmi\_wwan, qcserial and usb\_wwan drivers are built into the Linux kernel, whereas you need to use modules. I’m going to change that.