please help me!!! create usb boot and use zmodem!

[elholandes]

Hello people!
My os6400 p48 becomes repently bad memory and abort
I entry in
Miniboot->
or
=>
But i dont know how procedure for becomes the switch good for use:

I now the same problem but now its becomes in
Miniboot->
but i cant pass the archives trought Zmodem ( i set the switch in receive
mode to sysStartZmodem command ) but i dont know how pass thge images ( can
you pass me the fiwmware for os 6400? i only encou8ntred os 6850 firmware)
This switch was set the led in "1" but the led on becomes flashlight and
the mnessage is:
cant download XXXXX abort
The memoryy is corrupt, i entered in miniboot mode but :
I have recover via serial and y use putty program, this program freezes in
this message.. but.. how i can recover the switch?
The exactly question is the same:
-I use putty program setting:
serial interface
baud rate: 9600
How configurate putty to passes step 1 and 2 the document???
Beste regards!