530 reboots during activity randomly

Same problem! 

[
{
"unit_id":"xxxxxxxxxx",
"product_name":"Edge 530",
"software_part_number":"006-B3121-00",
"ms_since_epoch":1662996974000,
"system_version":"9.50",
"build_type":"PRODUCTION",
"backtrace":"
Function Address: 0x602D85E0
   Call Address at Function: 0x602D85FA

Function Address: 0x602DA22C
   Call Address at Function: 0x602DA256

Function Address: 0x602DD06C
   Call Address at Function: 0x602DD074

Function Address: 0x60502624
   Call Address at Function: 0x60502690

Function Address: 0x605031C0
   Call Address at Function: 0x605031E0

Function Address: 0x604EFA20
   Call Address at Function: 0x604EFA3E

Function Address: 0x604EEAD0
   Call Address at Function: 0x604EEBAE

Function Address: 0x601A81E0
   Call Address at Function: 0x601A8214

Function Address: 0x601A95F4
   Call Address at Function: 0x601A9666

Function Address: 0x601A9B34
   Call Address at Function: 0x601A9C60

Function Address: 0x601A5970
   Call Address at Function: 0x601A5E2E

Function Address: 0x601A52EC
   Call Address at Function: 0x601A5332

Function Address: 0x601A5608
   Call Address at Function: 0x601A5686

Function Address: 0x6019C6A0
   Call Address at Function: 0x6019C762

Function Address: 0x6019F52C
   Call Address at Function: 0x6019F5A6

Function Address: 0x60450E90
   Call Address at Function: 0x60450F72

Function Address: 0x6019C9A0
   Call Address at Function: 0x6019C9C0

",
"error_cause":"RTL Trap",
"proprietary_info":{
    "Commit ID":"cbd91fbf95bca44a0c8a275b274dc5635fa6464b",
    "Time":"2022-9-12 17:36:14",
    "Project Specific":"2022-9-12 17:36:14",
    "CDP_LOG":"062E55D,605ED88D,6062E55D,6060E991,6062E55D,605ED88D,6062E55D,605ED88D,6062E55D,6060E011,6062E55D,605ED88D,6062E55D,605ED88D,6062E55D,605ED88D,6062E55D,605ED88D,6062E55D,605ED88D,6062E55D,6060E011,6062E55D,605ED88D,6062E55D,6060E011,6062E55D,605ED88D,6062E55D,605ED88D,6062E55D,6060E9B5,6062E55D,605ED88D,6062E55D,605ED88D,6062E55D,6060E011,6062E55D,605ED88D,6062E55D,605ED88D,6062E55D,605ED88D,6062E55D,605ED88D,6062E55D,605ED88D,6062E55D,605ED88D,6062E55D,6060E011,6062E55D,605ED88D,6062E55D,605ED88D,",
    "RTL Error Number":"6E5D8024",
    "Error Message":"62F95738,00000000,00000000,62F95740,00000000,00000000,00000000,62F95738,00000000,62F9576C,00000844,0000000D,62F95740,62F95738,00000000,602D85FA,6001003F",
    "Task Name":"BTF main",
    "Saved SP":"62F95738",
    "Saved LR":"00000000",
    "Saved PC":"602D85FA",
    "R[0]":"62F95738",
    "R[1]":"00000000",
    "R[2]":"00000000",
    "R[3]":"62F95740",
    "R[4]":"00000000",
    "R[5]":"00000000",
    "R[6]":"00000000",
    "R[7]":"62F95738",
    "R[8]":"00000000",
    "R[9]":"62F9576C",
    "R[10]":"00000844",
    "R[11]":"0000000D",
    "R[12]":"62F95740",
    "R[13]":"62F95738",
    "R[14]":"00000000",
    "R[15]":"602D85FA",
    "cpsr":"6001003F"
    }

}
]

I've noticed this too. Simple configuration with Wahoo HR and cadence sensors. Also, linked to an iPhone SE 2nd Gen.

YES, 9.5 reboots during a ride. Planned death of 530 - seen it with previous models?

Going back to 9.10 got my 530 working again:

https://support.garmin.com/en-MY/?faq=eWswdSH4aC3xrXxmQj7U9A&fbclid=IwAR38ZXq22mJ6VbUg6ps-vB3O1i9Irn4DzlFefSWXAhenbT9AW5NBwVLOnKg

https://www8.garmin.com/support/download_details.jsp?id=14953&fbclid=IwAR1fjYeyakyrRxRMPv9dNZ4QRb-YD0b4cBK7adab9VaLxdyWmVTP_cvfuZ0

I have the same problem with rebooting. My Edge 530 was purchased in June. I found the 9.10 version here in your link, but I called Garmin and was inforrmed that I cannot upload older versions of the firmware. As I use Garmin Connect app on my smartphone it appeared that Garmin knows all about my Edge activity. So what about the warranty? I guess that you used a third party software to upload 9.10 version to your Edge?

I installed the firmware update file manually, except I followed the directions included with the 9.10 firmware - it's not to be placed in the NewFiles folder.

https://support.garmin.com/en-US/?faq=rzvP53Si4O3barYoXzw5L7

Thanks. Did you inform Garmin company about the bug? Their engineers should asap prepare a new, good firmware

OK, i have made the downgrade. Edge asked me if I wanted install older firmware version :)  I have made backup copy before and after turning the device on with 9.10 version I had to prepare my screens once again. But there is a new issue. I cannot pair Connect app on my phone (Samsung Galaxy) with the device. The app has been just updated. My phone sees Edge 530 by Bluetooth, the pairing was made with the 6-digit PIN, bout the Connect app not. The phone sees Edge530 in 2 modes BT and BTLE. The connection between Edge and phone is made in BT mode. I have tried many solutions: reinstalled Connect app, turned the phone and Edge on and off. And it is still the same. The app displays "Edge 530 is ready to connect", there is a running man gif and this screen has been on and on for 15 minutes And Edge displays" Waiting for the phone"...

For this issue I would recommend to install the older version of Garmin connect app that you can find on apkmirror, that sorted this issue for me.