Are you a current Phat.Boy owner?

If you currently own a Phat.Boy there are two possible routes by which you can have your unit upgraded to meet the Phat.Boy V2 software specifications.

Upgrades of the Phat.Boy to V2 software are done by simply replacing the memory chip within the unit.

The two upgrade routes are:

1. A 'self fit' chip which is supplied complete with fitting instructions and manual addendum


2. By returning your unit direct to us for the upgrade to be carried out.


The cost of the 'self fit' chip is £24.95/$34.95 plus the cost of registered post.

The upgrade carried out by Keyfax will cost is £34.95/$44.95. inc return shipping.


As of writing the only ways to obtain an upgrade is by contacting us directly:

UK Tel: + 44 (0) 1491 577 147

USA Tel: + 1 831 460 0172


If you wish to purchase the upgrade chip by email you will need to include:

Full Name

Postal Address

Credit Card Number and Expire Date


We will be adding the UPGRADE CHIP to our web order form in due course.