SM 450 continuous reboot

Hi, i have this SM that have a continuous reboot from today, there is a strange Event Log. Uptime max 6 minutes.

Device Type :
5.4/5.7GHz MIMO OFDM
Board Type :
P11 C120
Software Version :
CANOPY 14.1.2 (Build 17) SM-AES
Board MSN :
6069QS0T8M
FPGA Version :
050516

******System Startup******
System Reset Exception -- Watchdog Reset
Software Version : CANOPY 14.1.2 (Build 17) SM-AES
Board Type : P11
Boot Bank : 1
Board Temperature : 61 C / 141 F
Device Setting : 5.4/5.7GHz MIMO OFDM - Subscriber Module - 0a-00-3e-a2-XX-XX<br />No valid accounts configured. Using default user account
FPGA Version : 050516
FPGA Features : AES, Sched;
01/01/2011 : 00:01:06 UTC : File src/alt_irq_handler.c : Line 198 :ILLEGAL INSTRUCTION: inst 100690BA adr 00026154 cnt 1
01/01/2011 : 00:01:06 UTC : File src/alt_irq_handler.c : Line 198 :ILLEGAL INSTRUCTION: inst 100490BA adr 000008D8 cnt 13
01/01/2011 : 00:01:06 UTC : File src/alt_irq_handler.c : Line 198 :ILLEGAL INSTRUCTION: inst 100490BA adr 000008D8 cnt 17
01/01/2011 : 00:01:06 UTC : File src/alt_irq_handler.c : Line 198 :ILLEGAL INSTRUCTION: inst 100490BA adr 000008D8 cnt 16
01/01/2011 : 00:01:06 UTC : File src/alt_irq_handler.c : Line 198 :ILLEGAL INSTRUCTION: inst 100490BA adr 000008D8 cnt 15
01/01/2011 : 00:01:06 UTC : File src/alt_irq_handler.c : Line 198 :ILLEGAL INSTRUCTION: inst 100490BA adr 000008D8 cnt 14
01/01/2011 : 00:01:06 UTC : File src/alt_irq_handler.c : Line 198 :ILLEGAL INSTRUCTION: inst 100490BA adr 000008D8 cnt 12
01/01/2011 : 00:01:06 UTC : File src/alt_irq_handler.c : Line 198 :ILLEGAL INSTRUCTION: inst 100490BA adr 000008D8 cnt 18
01/01/2011 : 00:00:00 UTC : File Startup : Line 0 :
01/01/2011 : 00:00:00 UTC : File src/common/psos_wrap.c : Line 995 :Time Set
01/01/2011 : 00:00:00 UTC :
******System Startup******
System Reset Exception -- Watchdog Reset
Software Version : CANOPY 14.1.2 (Build 17) SM-AES
Board Type : P11
Boot Bank : 1
Board Temperature : 59 C / 139 F
Device Setting : 5.4/5.7GHz MIMO OFDM - Subscriber Module - 0a-00-3e-a2-XX-XX<br />No valid accounts configured. Using default user account
FPGA Version : 050516
FPGA Features : AES, Sched;
01/01/2011 : 02:01:19 CEST : File src/comm_center.c : Line 1657 :Timezone set to CEST;
06/23/2016 : 15:18:58 CEST : File src/common/psos_wrap.c : Line 995 :Time Set
**********End of System Log**********


From AP CANOPY 14.1.2 (Build 17) AP-AES:

AP Session Log
Session Dump for LUID 20

06/23/2016 : 15:12:08 CEST : Event: AUTHEN_SUC, NewState: IN SESSION, Flag 0
06/23/2016 : 15:12:08 CEST : Event: SEND_AUTHOR_MSG, NewState: IN SESSION, Flag 0
06/23/2016 : 15:12:08 CEST : Event: SES_MSG, MsgType: ESNQUERY, NewState: IN SESSION, Flag 0
06/23/2016 : 15:14:08 CEST : Event: SES_MSG, MsgType: PAREQ, NewState: IN SESSION, Flag 0
06/23/2016 : 15:16:00 CEST : Event: OOS, MsgType: VCERR, NewState: IDLE, Flag 360
06/23/2016 : 15:18:58 CEST : Event: REGREQ, NewState: REGISTERING, Flag 0
06/23/2016 : 15:18:59 CEST : Event: AUTHEN_SUC, NewState: IN SESSION, Flag 0
06/23/2016 : 15:18:59 CEST : Event: SEND_AUTHOR_MSG, NewState: IN SESSION, Flag 0
06/23/2016 : 15:18:59 CEST : Event: SES_MSG, MsgType: ESNQUERY, NewState: IN SESSION, Flag 0
06/23/2016 : 15:20:59 CEST : Event: SES_MSG, MsgType: PAREQ, NewState: IN SESSION, Flag 0
repeated 1 times
06/23/2016 : 15:23:59 CEST : Event: OOS, MsgType: VCERR, NewState: IDLE, Flag 360
06/23/2016 : 15:25:30 CEST : Event: REGREQ, NewState: REGISTERING, Flag 0
06/23/2016 : 15:25:30 CEST : Event: AUTHEN_SUC, NewState: IN SESSION, Flag 0
06/23/2016 : 15:25:30 CEST : Event: SEND_AUTHOR_MSG, NewState: IN SESSION, Flag 0
06/23/2016 : 15:25:30 CEST : Event: SES_MSG, MsgType: ESNQUERY, NewState: IN SESSION, Flag 0
06/23/2016 : 15:27:30 CEST : Event: SES_MSG, MsgType: PAREQ, NewState: IN SESSION, Flag 0
repeated 2 times

Count 129
Reg-Count  128
Re-Reg 0

Uptime 00:00:13

Yesterday, at 19:00:34, reboots stopped without our interventions.

Today at 10:30 reboots are started.

maybe is the temperature?