# Swiflash issue **URL:** \ **Category:** Uncategorized\ **Created:** [April 17, 2023, 7:46am UTC](https://forum.sierrawireless.com/t/swiflash-issue/29544 "2023-04-17T07:46:03Z")\ **Posts on this page:** 11\ **Page:** 1
**Author:** ![alban.fricot](https://avatars.discourse-cdn.com/v4/letter/a/e47c2d/32.png) [@alban.fricot](https://forum.sierrawireless.com/u/alban.fricot)\ **Post date:** [April 17, 2023, 7:46am UTC](https://forum.sierrawireless.com/t/swiflash-issue/29544/1 "2023-04-17T07:46:03Z")
Hi, I’m trying to flash a device with “swiflash” tool. For constraints related to my need, I have to use swiflash with the “-p” option to specify a port. This method works well unless the fx30 has not been flashed before. Let me explain. If I execute this command : `"swiflash -p /dev/serial/by-path/pci-0000:00:14.0-usb-0:1:1.3-port0 -m wp77xx -i mySPK.spk",` I get this error message: `"Detecting USB of the target. No device connected"` On the other hand, if I first do : `"swiflash -m wp77xx -i mySPK.spk",` it works and then the first command: `"swiflash -p /dev/serial/by-path/pci-0000:00:14.0-usb-0:1:1.3-port0 -m wp77xx -i mySPK.spk"` also works. Do you have any idea about this? Regards, Alban ---
**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:** [April 17, 2023, 7:50am UTC](https://forum.sierrawireless.com/t/swiflash-issue/29544/2 "2023-04-17T07:50:47Z")
how about you first do AT!BOOTHOLD to the fresh module? ---
**Author:** ![alban.fricot](https://avatars.discourse-cdn.com/v4/letter/a/e47c2d/32.png) [@alban.fricot](https://forum.sierrawireless.com/u/alban.fricot)\ **Post date:** [April 17, 2023, 7:55am UTC](https://forum.sierrawireless.com/t/swiflash-issue/29544/3 "2023-04-17T07:55:04Z")
HI, This is the result of the command: ```auto root@fx30s:~# microcom /dev/ttyAT AT!BOOTHOLD OK ``` ---
**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:** [April 17, 2023, 8:00am UTC](https://forum.sierrawireless.com/t/swiflash-issue/29544/4 "2023-04-17T08:00:11Z")
the it will reboot as download mode (only one DM port is enumerated) can you do “swiflash -p /dev/serial/by-path/pci-0000:00:14.0-usb-0:1:1.3-port0 -m wp77xx -i mySPK.spk”? ---
**Author:** ![alban.fricot](https://avatars.discourse-cdn.com/v4/letter/a/e47c2d/32.png) [@alban.fricot](https://forum.sierrawireless.com/u/alban.fricot)\ **Post date:** [April 17, 2023, 8:13am UTC](https://forum.sierrawireless.com/t/swiflash-issue/29544/5 "2023-04-17T08:13:25Z")
Yes it true : ```auto ls /dev/serial/by-path/ pci-0000:00:14.0-usb-0:1:1.0-port0 ``` But when I tried to execute the command, I have the following result : ```auto swiflash -p /dev/serial/by-path/pci-0000\:00\:14.0-usb-0\:1\:1.0-port0 -m wp77xx -i mySPK.spk Detecting USB of the target No device connected ``` ---
**Author:** ![alban.fricot](https://avatars.discourse-cdn.com/v4/letter/a/e47c2d/32.png) [@alban.fricot](https://forum.sierrawireless.com/u/alban.fricot)\ **Post date:** [April 17, 2023, 8:16am UTC](https://forum.sierrawireless.com/t/swiflash-issue/29544/6 "2023-04-17T08:16:31Z")
But If a begin with this process : `swiflash -i mySPK.spk -m wp77xx`, it will works And then,` swiflash -p /dev/serial/by-path/pci-0000\:00\:14.0-usb-0\:1\:1.0-port0 -m wp77xx -i mySPK.spk` will works too ---
**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:** [April 17, 2023, 8:17am UTC](https://forum.sierrawireless.com/t/swiflash-issue/29544/7 "2023-04-17T08:17:16Z")
so it only happens once for fresh module? ---
**Author:** ![alban.fricot](https://avatars.discourse-cdn.com/v4/letter/a/e47c2d/32.png) [@alban.fricot](https://forum.sierrawireless.com/u/alban.fricot)\ **Post date:** [April 17, 2023, 8:25am UTC](https://forum.sierrawireless.com/t/swiflash-issue/29544/8 "2023-04-17T08:25:00Z")
Yes only for fresh module. Maybe there is something in configuration that block the process when trying to flash with port option ---
**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:** [April 17, 2023, 8:26am UTC](https://forum.sierrawireless.com/t/swiflash-issue/29544/9 "2023-04-17T08:26:23Z")
no problem is found on used module: ```auto owner@ubuntu:~$ swiflash -p /dev/serial/by-path/pci-0000\:03\:00.0-usb-0\:2.1\:1.0-port0 -m wp76xx -i /home/owner/leaf/leaf-data/wp76/wp76-image/modem/9999999_9907152_SWI9X07Y_02.37.03.00_00_GENERIC_002.095_000.spk Detecting USB of the target DONE Communicating with the target DONE Switching to firmware download mode ..............DONE Downloading the firmware ..........DONE Rebooting the module ..........DONE Firmware Download SUCCESS ``` Maybe you did with AT!BOOTHOLD, after module reboots, check whether if there is a really port called “/dev/serial/by-path/pci-0000:00:14.0-usb-0:1:1.0-port0” ---
**Author:** ![alban.fricot](https://avatars.discourse-cdn.com/v4/letter/a/e47c2d/32.png) [@alban.fricot](https://forum.sierrawireless.com/u/alban.fricot)\ **Post date:** [April 17, 2023, 8:32am UTC](https://forum.sierrawireless.com/t/swiflash-issue/29544/10 "2023-04-17T08:32:00Z")
After reboot, I have just this port available : `/dev/serial/by-path/pci-0000\:00\:14.0-usb-0\:1\:1.0-port0` But the command is not working : ```auto swiflash -p /dev/serial/by-path/pci-0000\:00\:14.0-usb-0\:1\:1.0-port0 -m wp77xx -i mySPK.spk Detecting USB of the target No device connected ``` If I put a fresh module, then I execute the command without port option like : `swiflash - m wp77xx -i mySPK.spk` and then, if I try with the port option again, it works, but not the first time ---
**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:** [April 17, 2023, 8:45am UTC](https://forum.sierrawireless.com/t/swiflash-issue/29544/11 "2023-04-17T08:45:45Z")
then which part of your mySPK.spk is correcting the situation? Modem? legato? yocto? bootloader? You can take 4 fresh modules to verify this