If HyperTerminal output stops responding at /bin/console_age
Dont directly think of RMA.
In my case This was a cable error.
The default cable that comes within device or a Standard cisco cable wont work. try an other RS232 connector, I tried a Proventia IPS cable and resolved the problem with it.
you may safety ignore the "microcode device /dev/cpu/0/microcode doesn't exist" warnings that appears at console.