7. If a valid .A3Key is found in the C:/Program Files/Smith Meter/AccuMate.net directory, then the following
open file dialog box will not appear. Otherwise, if a valid key is not automatically found in the AccuMate
directory, then this window will require that the location of the key be specified. Shown in Figure 3 is the
open file dialog box for the .A3Key file.
Note: If another firmware upgrade is performed in the future, the last used file path (for the .A3Key file) will be used. The default location is in
the AccuMate.net directory.
8. Now enter the access code. This code will be the highest level of security that has been set on the AccuLoad
III.net. If no security is used on the AccuLoad, then simply click OK (clicking cancel will abort the upgrade
firmware procedure). The window used to enter the access code is shown in Figure 4.
9. Notice that the AccuLoad will restart after clicking OK for the access code. Next, the AccuLoad receives a
"firmware upgrade" command from AccuMate. The AccuLoad will go to the bootloader and the process will
begin. If at anytime the process stops or times out, simply repeat step 4 (Tools
process will continue from wherever it stopped. The AccuLoad will copy the bootloader to RAM and transfer
control to the bootloader. The bootloader will then erase the flash sectors used for the firmware and start
copying the new firmware downloaded from AccuMate to flash. Once the download is complete and the
CRC verified, the bootloader will transfer execution to the firmware.
The AccuLoad.net will indicate current status and progress during power up. The bootloader will be required to in-
terface to the display processor on the KDC only.
Note: The bootloader will not interface to an MMI display in a split architecture configuration. Therefore, there will be no KDC information dis-
played on the MMI until execution has been transferred from the bootloader to the firmware. Therefore, the "verifying firmware", "erasing flash"
and "upgrading firmware" messages shown below will not be displayed on the MMI.
Issue/Rev. 0.2 (6/14)
Section V – Firmware Upgrade Procedure
Figure 3
Figure 4
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Upgrade Firmware) and the
AB06069 • Page 11
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