ZyXEL Communications U-336SA - Manual (Page 154)

140 Upgrading Your Modem
11
Upgrading Your Modem
Upgrading by Flash EPROM
1. Obtain the new firmware by downloading from the ZyXEL BBS,
WWW or FTP site. See Contacting ZyXEL on page vi for the FTP
address.
2. Turn on your computer.
3. Turn on your modem.
4. Start any communications program that supports the XModem
protocol.
5. Type ATUPX.
6. Press Enter and wait for the following prompt characters:
You have chosen XMODEM (128 bytes data
with checksum) protocol to update your
modem. Data in Flash ROM will be
erased!!!
Are you sure (Y/N)?
7. Press Y. The following message then appears:
Start programming, please upload....
8. After the “§” prompt, use the XModem protocol to upload the file
U336S/SAvv.vvv to your modem. This step updates the modem’s
flash EPROM with the latest firmware.
9. When the installation is complete, the modem restarts automatically.