SYMPTOMS

Attempts to download firmware version 9.2c or newer to a SNAP-PAC-R1 or a SNAP-PAC-R2 controller, may fail with or without displaying a message. Possible messages that may be reported:

• "'Response' file is empty. Probable cause - not enough file space"
• "File load failure: Memory allocate/flash"
• "Invalid CRC in file"

• The firmware update may fail and not show any errors.

SEE ALSO

• KB86172
• KB86180

NOTE

This issue can also occur when the controller is programmed with a private key as a part of Secure Strategy Distribution (using PAC Terminal SSD).

To determine if your controller is configured for SSD, use PAC Manager's Inspect mode (Tools > Inspect).
Select "Other," and then set:

• The Address field to F408004
• The Type to 32-Bit Integer
• The Length to 1

Then click Refresh.

If the value is 2, then the controller is configured for SSD. For instructions to update the firmware in your controller, see the PAC Terminal SSD documentation.

WORKAROUND

NOTE: If the controller is assigned a secondary IP address, follow these steps to unassign the secondary IP address before proceeding with the Workaround:

1. In PAC Manager, select Tools > Inspect, and then click Status Write.
2. Scroll down to ETHERNET 2 Interface.
3. If there is a valid IP address in the IP Address Value field, change it to 0.0.0.0 and then click Apply.
4. Proceed with the Workaround.
5. After the firmware downloads are complete, you can reassign the secondary IP address to the ETHERNET 2 Interface.

• Bridge firmware for SNAP-PAC-R1: bridge-r1-S9.2c.bin
• Bridge firmware for SNAP-PAC-R2: bridge-r2-S9.2c.bin

1. Download the temporary "bridge" firmware file (bridge-r1-S9.2c.bin for SNAP-PAC-R1, or bridge-r2-S9.2c.bin for SNAP-PAC-R2) to your computer from the Opto 22 FTP Site.

2. In PAC Manager, select Tools > Inspect, enter the IP address in the Device Name field, click Status Write, select Restart Device from powerup, then click the Send Command button.

3. Use PAC Manager to download the bridge firmware file to your SNAP-PAC-R controller. 

4. Use PAC Manager to download the desired 9.2c or newer firmware file to your SNAP-PAC-R controller.

The temporary "bridge" firmware will not be necessary to upgrade firmware once your controller has a firmware version that is R9.2c or newer.

RESOLUTION

Opto 22 has resolved this issue by modifying PAC Manager. Use PAC Manager R9.5b (or higher) to install any firmware version when this problem occurs.

Use the Workaround if your controller has a firmware version prior to 9.2c and you cannot upgrade PAC Manager to version R9.5b or higher.