Good morning, I have several 1910 24P JE008A switches, I am trying to update them to software version 5.20 release 1519P06 from version 5.20 release 1513P07, so far I have tried 5 of them, 3 successfully but lost 2 of them, someone knows What could be happening? How could I recover those that do not respond? There is no activity on any ethernet port and the console port is not responding.
Thank you in advance.