User's Manual

CHAPTER3
UpgradingtheFirmware
25
4. Click the Configure button to display the com port’s Properties
dialog (Figure 11 shows a COM1 com port).
Figure 11. Hyperterminal and com port properties dialogs
5. In the Bitspersecond field, select 115200.
6. Select
OK in the com port’s Properties dialog to close it.
7. Select
OK in the hyperterminal’s Properties dialog to close it.
8. Back in the hyperterminal window, press Enter to continue the
upgrade.
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The current firmware image must be erased for the
upload.
If you continue now, you *MUST* upload a valid
firmware image for an A753!
Continue? [y/n]:
 WARNING When you continue with the upgrade process, any existing firmware
image in the A753’s flash memory will be erased! You must supply a
valid image for upload or the A753 will have only bootloader
capabilities (that is, it will have no radio capabilities).
9. Enter Y to continue the upgrade.
The bootloader starts sending the letter C (for connect)