Upgrading Your Modem 141
Kernel Recovery Mode
Your modem is equipped with ZyXEL’s exclusive Kernel
Recovery Mode. This unique feature enables quick recovery from
failed flash uploads. With other modems, a failed flash upload
usually results in the user having to return the modem to the factory
for repair.
In the unlikely event that your modem fails to respond to AT
commands after upgrading the flash EPROM:
1.
Turn off the modem.
2.
Press the menu key button on the front panel while turning on
the modem, then release the button after 5 seconds.
3.
A Kernel Program responsible for the update process takes
control of the modem. It accepts a limited set of AT commands,
including the ATUPX command.
Repeat steps 1 through 6 from the directions above to upload a file
that contains valid firmware for your modem.
Содержание U-336S
Страница 1: ...U 336S User s Manual Version 2 0 Mar 1997 ZyXEL ACCESSING INTERNET INTRANET ...
Страница 18: ...6 Introduction ...
Страница 24: ...12 Installation ...
Страница 72: ...60 Special Functions ...
Страница 98: ...86 Fax Operation ...
Страница 115: ...AT Command Set Summaries 103 ...
Страница 138: ...126 Status Registers Result Codes Numerical V0 Verbose V1 Numerical V0 Verbose V1 14400 33600 ...
Страница 139: ...Status Registers Result Codes 127 ...
Страница 157: ...Connector Pinouts 145 ...