Power1401-3A firmware

You will need to refer to these installation instructions once you have down-loaded the file. Please print this page before you start the work.

The firmware update package is a single expandable file. The expanded package includes a number of files with the extension .FLI.


  1. Make a new directory on your hard disk and call it Power.
  2. Down-load P3AUpd07.zip and save it in the new directory.
  3. Expand the file with WinZip.

Once you have expanded the .FLI files do the following:

  1. Turn the Mode switch on the rear panel of your Power1401 to position 1.
  2. Switch off your Power1401, then switch it on again.
  3. Run the Try1401 application (supplied with Spike2, Signal and the 1401 Windows Installation disk) and run one pass of the tests to be sure that your 1401 is operating correctly.
  4. Use the File menu Update Flash Memory option and select one of the .FLI files (it does not matter which). Click the OK button when you are asked if you are sure you want to update an area.
  5. Repeat step 4 for the other .FLI file, then close the Try1401 program.
  6. It is essential to update both files before continuing.
  7. Switch your Power1401 off, set the Mode switch to position 2 and switch it on again.

Your Power1401 is now ready for use. You can verify correct operation with the Try1401 test options. It is important that you install all the files provided, as new features in one file may depend on new features in another.

If your Power1401 does not operate correctly after the update, repeat steps 1 to 7. If it still does not operate as expected, set the mode switch back to position 1 to restore the factory settings (so you can continue to use it) and contact CED for assistance.

Please tell us a little about yourself for our records, and then you can down-load the update.

Cambridge Electronic Design Limited

Registered in England: 972132

Registered office:

  • Cambridge Electronic Design Limited,
  • Technical Centre,
  • 139 Cambridge Road,
  • Milton,
  • Cambridge CB24 6AZ

VAT: GB 214 2617 96

Producer Registration number: WEE/BD0050TZ

Terms and Conditions of Sale

For our US customers, we can provide tax form W-8BEN, that identifies us as a UK company.

DUNS: 219151016
NAICS: 423490
Commodity codes
Hardware: 84716070
Software: 85234945

By email:


By post
  • Cambridge Electronic Design Limited,
  • Technical Centre,
  • 139 Cambridge Road,
  • Milton,
  • Cambridge CB24 6AZ
By telephone:

(Int.+44) (0)1223 420186

From North America (Toll Free):

1 800 345 7794


Privacy policy

CED, through this site, does two things that relate to privacy. We would like to explain them.

Emails from down-loads

We offer free down-loads of many files on our site, from test programs to complete install files for updated versions of major packages like Spike2 and Signal.

When customers wish to take a down-load of a major package, we ask a few questions, including their name, email address, the serial number of the software for which they seek an upgrade and whether they would like an automatic email whenever we update the product. This information is emailed back to CED when they access the final down-load screen. Within this email, your browser transmits the type and version of browser you are using, and the screen resolution you are running.

The reasons why we take and keep this information are that it is useful for our software development team to know who has taken the latest versions, and it is useful for our web site development team to know which browsers people are using to view our site, and what resolution they have their screens set to.


When people down-load a major package, we try to write a cookie, a small file in your computer, that records your name, serial number of the software package, and the version you are down-loading. These files have a lifetime of one year.

The reasons for storing this information are firstly that if you ask for another down-load some other time, your details are read from the cookie and are pre-written into the form, to save you looking them up again. The other reason is that next time you access our site, your browser looks through your CED cookies and compares the versions down-loaded with the latest version numbers read from our site. If there is a later version of a product you have already down-loaded, we tell you on the home page screen, so you know that it is worth going to the down-load page again.

None of this information is ever given to anyone outside CED. ×