WR21 event log

Hi Everyone:

We had a site that was down for weeks, the guys opened up the equipment enclosure and the looked inside and the router appeared on and immediately connected. It now shows an uptime of ~40 minutes while the other instrumentation at the site shows an uptime of 41 days.
Here are the first few entries of the event log:
14:39:00, 30 Dec 2020,Default Route 0 Out Of Service,Ethernet
14:39:00, 30 Dec 2020,ETH 0 Out Of Service,Ethernet
14:39:00, 30 Dec 2020,ETH 1 up
14:39:00, 30 Dec 2020,ETH 1 cable connect
14:39:00, 30 Dec 2020,USB-2 device 1 connected: EHCI root hub
14:38:59, 30 Dec 2020,USB-1 device 1 connected: EHCI root hub
14:38:59, 30 Dec 2020,Power control profile 0 activated
14:38:59, 30 Dec 2020,NV Reset[0x44494749,0x49b14040,0x0],Signature<***************
14:38:59, 30 Dec 2020,Power-up[]
14:38:59, 30 Dec 2020,GPRS SIM 1 present
14:38:59, 30 Dec 2020,GPRS using SIM 1 (present)
14:38:58, 30 Dec 2020,Eventlog Counters Reset

Does anyone know what the marked line means?

Cheers,
john