https://live.paloaltonetworks.com/t5/general-topics/hardware-problems-in-pa-3220/m-p/339011#M85194 <P>I had similar problems in 4 firewall pa 3220 in which I could not even enter maintenance mode to take it to the factory reset mode and I had to send them via RMA to the 4 firewalls &nbsp;for their change. Someone had a similar problem , &nbsp;to me a lot of attention that firewalls &nbsp;with very good MTBF &nbsp;have this type of problem if someone knows something, I will appreciate it.</P> Thu, 16 Jul 2020 16:59:03 GMT DGonzalezAR 2020-07-16T16:59:03Z https://live.paloaltonetworks.com/t5/general-topics/hardware-problems-in-pa-3220/m-p/339011#M85194 <P>I had similar problems in 4 firewall pa 3220 in which I could not even enter maintenance mode to take it to the factory reset mode and I had to send them via RMA to the 4 firewalls &nbsp;for their change. Someone had a similar problem , &nbsp;to me a lot of attention that firewalls &nbsp;with very good MTBF &nbsp;have this type of problem if someone knows something, I will appreciate it.</P> Thu, 16 Jul 2020 16:59:03 GMT https://live.paloaltonetworks.com/t5/general-topics/hardware-problems-in-pa-3220/m-p/339011#M85194 DGonzalezAR 2020-07-16T16:59:03Z https://live.paloaltonetworks.com/t5/general-topics/hardware-problems-in-pa-3220/m-p/339028#M85196 <P>Were you trying to get in on serial console?&nbsp; If so, did you try different speeds?&nbsp; I've seen devices where someone has modified the bps and it looks like a dead device.&nbsp;&nbsp;</P> Thu, 16 Jul 2020 18:11:58 GMT https://live.paloaltonetworks.com/t5/general-topics/hardware-problems-in-pa-3220/m-p/339028#M85196 nbutter 2020-07-16T18:11:58Z