SYMPTOMS

NOTE: If your controller is secured with a private key through PAC Terminal Secure Strategy Distribution (SSD), see NOTES for SSD (below).

Attempts to download firmware version 9.2c or higher to a SNAP-PAC-R1, -R1-B, or -R2 controller may fail, with or without displaying a message. Messages that may be reported include:

• "'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, page 1 of SNAP PAC Controllers and Brains Firmware README
• Notes, SNAP-PAC-R1 Controller Firmware
• Notes, SNAP-PAC-R2 Controller Firmware
• Notes, SNAP PAC Products Firmware (Single Download)

NOTES for SSD

When a controller is programmed with a private key through PAC Terminal SSD*, you may see similar symptoms if you didn’t first digitally sign the firmware. For instructions to digitally sign the firmware, see Form 1762, Using Secure Strategy Distribution (provided when you purchase PAC Terminal SSD).

If the firmware is already digitally signed and you are still experiencing this issue, follow the steps in the WORKAROUND section.

* To determine if your controller is configured for SSD:

1. In PAC Manager, click Tools > Inspect.
   
   
2. Select "Other," and then set:
• The Address field to F408004
• The Type to 32-Bit Integer
• The Length to 1
  
3. Then click Refresh.
   If the resulting value is 2, the controller is configured for SSD.

WORKAROUND

Try using PAC Manager R9.5b (or higher) to update the firmware.

If you're still having trouble, you can try either of these other workarounds:

• Use the Failsafe Bootloader Mode to install the firmware. For details, see "Replacing Damaged Firmware" in the PAC Manager User's Guide (form 1704).
  

• Follow the steps below using PAC Manager R9.5b (or higher).
  Opto 22 recommends you always use the most recent release of PAC Manager.
  

1. In PAC Manager R9.5b or higher, click 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. Now try installing the firmware update.

1. In PAC Manager:
• Select Tools > Inspect, and then enter the IP address in the Device Name field.
• Click Status Write, then select Restart Device from powerup, and then click Send Command.
  
2. Get the appropriate “bridge” firmware file from the Opto 22 FTP Site.
   
• SNAP-PAC-R1: snap-pac-r1-S9.6a.bin
• SNAP-PAC-R2: snap-pac-r2-S9.6a.bin
  
3. Use PAC Manager to download the bridge firmware file to your SNAP-PAC-R controller.
• If you were able to download the bridge firmware file, proceed to step 4.
• If you are still not able to download the bridge firmware file,contact Opto 22 Product Support.
  
4. Use PAC Manager to download the desired 9.2c or higher firmware file to your SNAP-PAC-R controller.

RESOLUTION

PAC Manager R9.5b and higher now include bridge firmware S9.6a, and will automatically attempt to detect the cases where the intermediate step of installing bridge firmware is needed. For cases where PAC Manager R9.5b (or higher) doesn't fully resolve the issue, see the WORKAROUND section for additional methods to update the firmware in your SNAP PAC R-series controller.