ZyXEL Communications ACCESSING INTERNET & INTRANET omni series - Manual (Page 111)

Upgrading Your omni 99
2. Start any communications program that supports the Xmodem
protocol, and type:
ATUPX
TA responds:
You have chosen Xmodem (128 octets of data with
checksum) protocol to update your TA. Data in Flash ROM
will be erased !!!
Are you sure (Y/N) ?
3. Press Y. The following message then appears:
Start programming, please upload.
4. Use the Xmodem protocol to upload the file ONETd.vvv to your
TA. This step updates the TA’s flash EPROM with the new
firmware. When installation is complete, the TA will restart
automatically.
Kernel Mode
In the unlikely event that your TA fails to respond to AT commands
after upgrading the flash EPROM follow the procedure below:
1. Power on the TA. The reset will prompt the TA to check the
integrity of the codes in the flash EPROM.
2. If proper valid firmware can not be verified, the TA will initiate
Kernel Mode. Once it is in Kernel mode, you can issue limited
“AT” commands. From this point, you can start from item 3 of
our upgrading procedure.