Edge 540 force restart during activity

What is your software version? The 1050 / 1040 / 840 forums are full of users reporting these issues, (multiple crashes / re-boots /  freezes / re-starts per ride, missed data in record, failure to reconnect sensors after disconnect), mostly since 28.20.

is any CIQ app installed? or any 3rd party maps? Edge storage: Debug folder, and what is in the err_log.txt 

I am experiencing the same issue. I am on an Edge 540 running 28.20. 
i just posted a thread with specifics but its being reviewed for spam, which is hilarious. I had the Ciq trailforks app installed and suspect that may be the issue. 

Here is my log.

File Name: 0:/Garmin/Debug/EventLogs//00000014.TXT

00000014.TXT

Mod note: mf9point8, your post was flagged and placed in the moderator's queue, so I converted your log to the attached txt file.

Thanks for all the replies! I'm currently running 28.20 with no CIQ apps installed surprisingly. Here's what my err_log.txt says:

[
{
"unit_id":"3609655731",
"product_name":"Edge 540",
"software_part_number":"006-B4061-00",
"ms_since_epoch":1756852158000,
"system_version":"28.20",
"build_type":"PRODUCTION",
"backtrace":"SYC main - Error type ( 0 ) File( ..\\..\\..\\FOC\\WBL\\power-manager\\wbl_power_manager.c ) Line( 703 )",
"error_cause":"Assert",
"proprietary_info":{
    "Commit ID":"e5ee7444431609ae73838c566927477a12d801a3",
    "Time":"2025-9-2 17:29:18",
    "Ram Dump":"N/A",
    "ESht PC":"0x00000000",
    "ESht SP":"0x00000000",
    "Fatal":"NO",
    "Task ID":"629EB0E0",
    "Task Name":"SYC main",
    "File Name":"..\\..\\..\\FOC\\WBL\\power-manager\\wbl_power_manager.c",
    "Line Number":"703",
    "Message":"Released 2"
    }
,
"Project Specific":{
    "data" : {

    }
}
},
{
"unit_id":"3609655731",
"product_name":"Edge 540",
"software_part_number":"006-B4061-00",
"ms_since_epoch":1756852158000,
"system_version":"28.20",
"build_type":"PRODUCTION",
"backtrace":"SYC main - Error type ( 0 ) File( ..\\..\\..\\FOC\\WBL\\power-manager\\wbl_power_manager.c ) Line( 703 )",
"error_cause":"Assert",
"proprietary_info":{
    "Commit ID":"e5ee7444431609ae73838c566927477a12d801a3",
    "Time":"2025-9-2 17:29:18",
    "Ram Dump":"N/A",
    "ESht PC":"0x00000000",
    "ESht SP":"0x00000000",
    "Fatal":"NO",
    "Task ID":"629EB0E0",
    "Task Name":"SYC main",
    "File Name":"..\\..\\..\\FOC\\WBL\\power-manager\\wbl_power_manager.c",
    "Line Number":"703",
    "Message":"Released 5"
    }
,
"Project Specific":{
    "data" : {

    }
}
},
{
"unit_id":"3609655731",
"product_name":"Edge 540",
"software_part_number":"006-B4061-00",
"ms_since_epoch":1756852158000,
"system_version":"28.20",
"build_type":"PRODUCTION",
"backtrace":"SYC main - Error type ( 0 ) File( ..\\..\\..\\FOC\\WBL\\power-manager\\wbl_power_manager.c ) Line( 703 )",
"error_cause":"Assert",
"proprietary_info":{
    "Commit ID":"e5ee7444431609ae73838c566927477a12d801a3",
    "Time":"2025-9-2 17:29:18",
    "Ram Dump":"N/A",
    "ESht PC":"0x00000000",
    "ESht SP":"0x00000000",
    "Fatal":"NO",
    "Task ID":"629EB0E0",
    "Task Name":"SYC main",
    "File Name":"..\\..\\..\\FOC\\WBL\\power-manager\\wbl_power_manager.c",
    "Line Number":"703",
    "Message":"Released 6"
    }
,
"Project Specific":{
    "data" : {

    }
}
},
{
"unit_id":"3609655731",
"product_name":"Edge 540",
"software_part_number":"006-B4061-00",
"ms_since_epoch":1756852158000,
"system_version":"28.20",
"build_type":"PRODUCTION",
"backtrace":"SYC main - Error type ( 0 ) File( ..\\..\\..\\PSN\\GPK_Source_Files\\psn_slist.c ) Line( 145 )",
"error_cause":"Assert",
"proprietary_info":{
    "Commit ID":"e5ee7444431609ae73838c566927477a12d801a3",
    "Time":"2025-9-2 17:29:18",
    "Ram Dump":"N/A",
    "ESht PC":"0x00000000",
    "ESht SP":"0x00000000",
    "Fatal":"NO",
    "Task ID":"629EB0E0",
    "Task Name":"SYC main",
    "File Name":"..\\..\\..\\PSN\\GPK_Source_Files\\psn_slist.c",
    "Line Number":"145",
    "Message":"145"
    }
,
"Project Specific":{
    "data" : {

    }
}
},
{
"unit_id":"3609655731",
"product_name":"Edge 540",
"software_part_number":"006-B4061-00",
"ms_since_epoch":1756852159000,
"system_version":"28.20",
"build_type":"PRODUCTION",
"backtrace":"SYC main - Error type ( 0 ) File( ..\\..\\..\\MNAND\\mnand.c ) Line( 811 )",
"error_cause":"Assert",
"proprietary_info":{
    "Commit ID":"e5ee7444431609ae73838c566927477a12d801a3",
    "Time":"2025-9-2 17:29:19",
    "Ram Dump":"N/A",
    "ESht PC":"0x00000000",
    "ESht SP":"0x00000000",
    "Fatal":"NO",
    "Task ID":"629EB0E0",
    "Task Name":"SYC main",
    "File Name":"..\\..\\..\\MNAND\\mnand.c",
    "Line Number":"811",
    "Message":"811"
    }
,
"Project Specific":{
    "data" : {

    }
}
}]

I am also on an edge 540 (non solar) running 28.20. I've only had it about 3 weeks now and it started crashing and rebooting itself last week on me just after a software update and setting up crash detection.

Adding my 'me too' to this thread. Edge 540 (28.20) crashed and rebooted 8 times during today's ride alone. Maddening... So what's the fix, Garmin?

I think a work around is to clear the temp files after each ride. In doing so I have had some success in the device not crashing/ rebooting every ride. I made it 3 hrs today without a reboot and an hour yesterday (the full ride). 

Sample size is way way too small to declare victory on that, but it can't hurt to try. 

+1. Every day edge 540 freezing at random moment. It's started since installing 28.20

Same here today - must have reset 7 or 8 times over the course of 66 miles. Restarted the unit and firmware version 28.33 got installed. Lets hope this has addressed the issue.