You will need:

• A PC with at least a 286, 640 kb memory, MS-DOS 3.3 or greater.
• A Flash Load Adapter Set consisting of:
  -Flash loading cable (Axis part.no. 13816)
  -DSUB to Centronics adapter (Axis part.no. 13815)
  -Loading software: loader.bin (for software versions < 5.10 only) and npsload.exe
  -Power supply
• The file containg the new software version

How to upgrade (for software versions prior to 5.10)

See below for software versions 5.10 or later

The loading software consists of two parts, one bootstrap loader (loader.bin) and one program loader (npsload.exe) which should be placed in a directory together with the firmware files. Step by step description:

1. Attach the flash loading cable to the PC.
2. Attach the power supply to the flash loading cable at the PC end.
3. Plug in the print server (LPT1) to the flash loading cable.
4. Attach the NPS power supply to the print server.
5. Start the loading sequence with the DOS command npsload -x <binary file> (x = lpt port). Or, for help, run npsload -h.

How to monitor the loading procedure

When the loading is started, the network LED will start flashing with rate of 2 Hz (loading time between 30 sec and 4 min).
The loader will consider itself completed and the led will flash with a rate of 0.5 Hz.
In case of error, the flashing rate will be 1 Hz (with the on period much longer than the off period). There will also be a message on the PC screen telling you if the loading was successful or not.

How to upgrade (for software versions 5.10 or later)

See above for software versions prior to 5.10
Software revisions 5.10 and later are distributed as one single file with built in loading capabilities. This file is designed to be possible to load over the network. The parallel port load described here is only required if the network load has failed. Step by step description:

1. Attach the flash loading cable to the PC.
2. Attach the power supply to the flash loading cable at the PC end.
3. Plug in the print server (LPT1) to the flash loading cable.
4. Attach the NPS power supply to the print server.
5. Start the loading sequence with the DOS command npsload -x -n <binary file> (x = lpt port). Or, for help, run npsload -h.
   Note! Do not forget the -n switch indicating that the software file has a built-in loader.

How to monitor the loading procedure

When the loading is started, the network LED will start flashing with a rate of 2 Hz (loading time between 30 sec and 4 min).
After a successful down load, the print server will automatically restart with the new firmware. If the NPSLOAD method is used there will also be a message on the PC screen telling you if the loading was successful or not.
In case of an error, the flashing rate will be 1 Hz (with the on period much longer than the off period).

Note! The 5.10 firmware will, when used with NPSLOAD, give an incorrect error message (The error has been corrected in firmware versions > 5.10). To verify a correct download check the indicated number of downloaded bytes with the actual size of the file.