User`s guide

AT-S39 User’s Guide
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6. To upload a file using Xmodem, type X at the prompt displayed in
Step 4.
The following prompt is displayed:
You are going to invoke the Xmodem download utility.
Do you wish to continue? [Yes/No]
7. Type Y for Yes.
The prompt “Uploading” is displayed.
8. Begin the file transfer of the new management software image.
Note
The transfer protocol must be Xmodem or 1K Xmodem.