Reset procedure was checked on the following hardware: Summit24e3, Summit5i, Alpine series, might work on other Summit like switches from extreme.
Password reset procedure:
BootROMmenu(General description):
1: Select primary code image
2: Select secondary code image
3: Select primary configuration
4: Select secondary configuration
b: Change baud rate
d: Force default configuration
f: Boot on board flash
h: Help
k: Erase selected configuration
p: Boot PCMCIA cards:
s: Load code image from serial port using XMODEM