# HL7800 FW upgrade fail

**URL:** https://forum.sierrawireless.com/t/hl7800-fw-upgrade-fail/29589
**Category:** Legacy HL Series
**Tags:** faq
**Created:** [April 24, 2023, 8:48am UTC](https://forum.sierrawireless.com/t/hl7800-fw-upgrade-fail/29589 "2023-04-24T08:48:37Z")
**Posts on this page:** 8
**Page:** 1

<div class="post-metadata">

### Author: ![jerry1](https://avatars.discourse-cdn.com/v4/letter/j/8c91f0/32.png) [@jerry1](https://forum.sierrawireless.com/u/jerry1)
#### Post date: [April 24, 2023, 8:48am UTC](https://forum.sierrawireless.com/t/hl7800-fw-upgrade-fail/29589/1 "2023-04-24T08:48:38Z")

</div>

Hi,

I use Linux to upgrade HL7800 FW.  
Using sft to upgrade FW will fail.  
What is the problem?  
Could anyone help with advice.  
Thanks.

 ![image](https://us1.discourse-cdn.com/flex025/uploads/sierrawireless/original/2X/b/bef09c0f1f49e58bf9fea73de878e96f65137f25.jpeg)

---

<div class="post-metadata">

### 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 24, 2023, 9:00am UTC](https://forum.sierrawireless.com/t/hl7800-fw-upgrade-fail/29589/2 "2023-04-24T09:00:29Z")

</div>

does it work with UART port instead of USB

---

<div class="post-metadata">

### Author: ![jerry1](https://avatars.discourse-cdn.com/v4/letter/j/8c91f0/32.png) [@jerry1](https://forum.sierrawireless.com/u/jerry1)
#### Post date: [April 25, 2023, 1:17am UTC](https://forum.sierrawireless.com/t/hl7800-fw-upgrade-fail/29589/3 "2023-04-25T01:17:03Z")

</div>

Hi @jyijyi

It only work with USB-UART 0 port.  
We tried USB-UART 1, RS232-UART 1 and main USB on the HL development board and it didn’t work either.  
We also tried using the HL FW .exe file provided by the Sierra source on Windows. Also unable to successfully upgrade FW.

---

<div class="post-metadata">

### 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 25, 2023, 1:21am UTC](https://forum.sierrawireless.com/t/hl7800-fw-upgrade-fail/29589/4 "2023-04-25T01:21:49Z")

</div>

I don’t see problem to upgrade in Windows via UART1 which is the AT command port, this should be very basic stuff

What is the error on UART1 when upgrading?

---

<div class="post-metadata">

### Author: ![jerry1](https://avatars.discourse-cdn.com/v4/letter/j/8c91f0/32.png) [@jerry1](https://forum.sierrawireless.com/u/jerry1)
#### Post date: [April 25, 2023, 3:56am UTC](https://forum.sierrawireless.com/t/hl7800-fw-upgrade-fail/29589/5 "2023-04-25T03:56:14Z")

</div>

UART upgrade FW failed as shown below.

 ![image](https://us1.discourse-cdn.com/flex025/uploads/sierrawireless/original/2X/3/351c55833a669cb20bb8ea1eb253d569be11bb00.jpeg)  
We also tried to use the main USB to upgrade the FW but failed as well.  
The .sh file in SFT needs to set the ttyCAM port.  
ttyACM0=AT port, ttyACM1 should be set as SFP\_LOGGER by AT command?  
 ![image](https://us1.discourse-cdn.com/flex025/uploads/sierrawireless/original/2X/f/f31a57dbd0f5312d98612a3c597c2195a98b4830.jpeg)

---

<div class="post-metadata">

### 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 25, 2023, 4:06am UTC](https://forum.sierrawireless.com/t/hl7800-fw-upgrade-fail/29589/6 "2023-04-25T04:06:42Z")

</div>

For the screenshot of UART upgrade failed, it can download at the beginning, but failed in the middle, not sure if this is some hardware issue.  
Can you try in Windows and see if it works?

---

<div class="post-metadata">

### Author: ![jerry1](https://avatars.discourse-cdn.com/v4/letter/j/8c91f0/32.png) [@jerry1](https://forum.sierrawireless.com/u/jerry1)
#### Post date: [April 25, 2023, 5:08am UTC](https://forum.sierrawireless.com/t/hl7800-fw-upgrade-fail/29589/7 "2023-04-25T05:08:38Z")

</div>

Yes, it works on Windows.  
I can find the bootloader port when restarting the module.  
So I can set AT port and Bootloader port in HL7800.4.6.9.4\_download.bat file.

---

<div class="post-metadata">

### 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 25, 2023, 5:10am UTC](https://forum.sierrawireless.com/t/hl7800-fw-upgrade-fail/29589/8 "2023-04-25T05:10:02Z")

</div>

then maybe it has some serial communication problem with linux as you don’t see problem in Windows