Here is an old posting from the Ascend Archive.
This should help you.
Be sure to use 57600 bps

Regards

Mark

On Tue, 3 Mar 1998, Jake Messinger wrote:

> Is there any way to override the password in an Ascend max? Tech support
> will not help because they say the box is "out of warranty".

This worked for me on a MAX 4000:
- open the screws at left+right side of chassis
- lift the front panel, attention to the LEDs!
- lift the upper chassis, this might be not very easy
- Jumper P3 is opened and must be closed for the reset
- attach terminal to serial port, 57600 bps
- power on MAX
- MAX prompts you with "=>"  -> that means it is in NINDY mode
- type "DF"  for "download file"
- MAX says  "CK CK CK"  for X-modem beeing ready
- upload a working MAX software release with your terminal software using
  x-modem. meanwhile, drink a coffee or go into church and pray that your
  MAX will come up again after this procedure...
- if upload is finished: power off MAX, open jumper P3, power on MAX
- pray pray pray
- MAX should come up and can be configured via the terminal at the serial
  port (it has lost ALL its configuration!)

Greetings

Elmar