HELP with dsi

i have a DSi with firmware 1.4e and a R4i V1.4.1 upgrade card and have downloaded lastest 1.44b kernel but when i put it in the dsi it comes up with a error message sayingan error has occurred.press and hold the pwer button to turn the system off.please refer to the nintendo dsi operations manual for details.

You need to find someone with a ds / ds lite.
Put the updated card into ds / ds lite
Tap third icon and you should see two options , config and upgrade
Press upgrade and it will update your card (in approx 4-5 mins)
Put card into your dsi and miami nights 3d icon should show!
Your dsi should now work.. :) :) :)