Re-configuring for european ink cartridges

i had thed same problem. after hours of trying different options i finally got it to work. i have a hp 3210 that i brought from the usa to irelnad and when i put in irish cartrtidges it said " this printer is cinfigured to use 02 cartridges" Iriss cartridges are 363. so what i done was , while the printer was turned on i held down the " Black" button and the "Color" button at the same time. Keeping them held I powered off the printer , keeping them held until the printer was completely powered off. when i turned the printer back on the region had being reset and it asked me to choose my language and country. chose " Ireland". Now works!!!