Error log "update failed" in 8.2.7 SM

I just update my AP to 8.2.7 and turned auto-update on with CNUT 3.

A customer has disconnection problems. I thought it could be caused by signal, it is close to the ap (it measures -52 dBm).

But i also noticed these weird messages in Event Log:
00:00:00 UT : Mon Jan 01 2001 : File src/syslog.c : Line 1199 System Reset Exception – Watchdog Reset
00:00:01 UT : Mon Jan 01 2001 : File src/root.c : Line 429 System Startup
00:00:01 UT : Mon Jan 01 2001 : File src/root.c : Line 434 Software Version : CANOPY 8.2.7 SM-DES
00:00:01 UT : Mon Jan 01 2001 : File src/root.c : Line 438 Software Boot Version : CANOPYBOOT 1.0
00:00:01 UT : Mon Jan 01 2001 : File src/root.c : Line 448 FPGA Version : 061808
00:00:01 UT : Mon Jan 01 2001 : File src/root.c : Line 452 FPGA Features : DES, Sched
19:50:30 UT : Thu Oct 09 2008 : File src/syslog.c : Line 1301 Time set
19:51:52 UT : Thu Oct 09 2008 : File src/update.c : Line 2627 Burnfile App from AutoUpdate.
19:51:53 UT : Thu Oct 09 2008 : File src/image_update.c : Line 691 Flash Image Update FAILED INVALIDFILEIMAGE
19:51:53 UT : Thu Oct 09 2008 : File src/update.c : Line 2661 POReset from AutoUpdate.
19:51:53 UT : Thu Oct 09 2008 : File src/testcmds.c : Line 785 Reset from Telnet command line.
00:00:00 UT : Mon Jan 01 2001 : File src/syslog.c : Line 1199 System Reset Exception – Watchdog Reset
00:00:00 UT : Mon Jan 01 2001 : File src/root.c : Line 429 System Startup
00:00:00 UT : Mon Jan 01 2001 : File src/root.c : Line 434 Software Version : CANOPY 8.2.7 SM-DES
00:00:00 UT : Mon Jan 01 2001 : File src/root.c : Line 438 Software Boot Version : CANOPYBOOT 1.0
00:00:00 UT : Mon Jan 01 2001 : File src/root.c : Line 448 FPGA Version : 061808
00:00:00 UT : Mon Jan 01 2001 : File src/root.c : Line 452 FPGA Features : DES, Sched
19:52:24 UT : Thu Oct 09 2008 : File src/syslog.c : Line 1301 Time set
19:53:46 UT : Thu Oct 09 2008 : File src/update.c : Line 2627 Burnfile App from AutoUpdate.
19:53:47 UT : Thu Oct 09 2008 : File src/image_update.c : Line 691 Flash Image Update FAILED INVALIDFILEIMAGE
19:53:47 UT : Thu Oct 09 2008 : File src/update.c : Line 2661 POReset from AutoUpdate.
19:53:47 UT : Thu Oct 09 2008 : File src/testcmds.c : Line 785 Reset from Telnet command line.
00:00:00 UT : Mon Jan 01 2001 : File src/syslog.c : Line 1199 System Reset Exception – Watchdog Reset
00:00:00 UT : Mon Jan 01 2001 : File src/root.c : Line 429 System Startup
00:00:00 UT : Mon Jan 01 2001 : File src/root.c : Line 434 Software Version : CANOPY 8.2.7 SM-DES
00:00:00 UT : Mon Jan 01 2001 : File src/root.c : Line 438 Software Boot Version : CANOPYBOOT 1.0
00:00:00 UT : Mon Jan 01 2001 : File src/root.c : Line 448 FPGA Version : 061808
00:00:00 UT : Mon Jan 01 2001 : File src/root.c : Line 452 FPGA Features : DES, Sched
00:00:00 UT : Mon Jan 01 2001 : File src/syslog.c : Line 1199 System Reset Exception –
00:00:00 UT : Mon Jan 01 2001 : File src/root.c : Line 429 System Startup
00:00:00 UT : Mon Jan 01 2001 : File src/root.c : Line 434 Software Version : CANOPY 8.2.7 SM-DES
00:00:00 UT : Mon Jan 01 2001 : File src/root.c : Line 438 Software Boot Version : CANOPYBOOT 1.0
00:00:00 UT : Mon Jan 01 2001 : File src/root.c : Line 448 FPGA Version : 061808
00:00:00 UT : Mon Jan 01 2001 : File src/root.c : Line 452 FPGA Features : DES, Sched
00:00:00 UT : Mon Jan 01 2001 : File src/syslog.c : Line 1199 System Reset Exception –


Please note that his antenna was correctly upgraded to 8.2.7, but those messages keep appearing (this is only a piece of the log).