: Use the show version command to verify your current DRAM and Flash memory. Version 15.8(3)M generally requires at least 512MB DRAM and 256MB Flash for the 1900 series.
If you describe the device or the firmware as "hot," it usually points to one of three areas: 1. Software Bugs and "Watchdog" Errors c1900universalk9mzspa1583m7bin hot