Hi, I did a little app what works fine on WTK, but to test on a real phone then make a wap site and put .jad and .jar to download OTA on my Nokia 7250. When try the dowload have a "unknown format" message. I read another related question at this forum and check size homogenity (.jar size equal to .jad specification). Another hints are about MIME parameters, but I dont know first if I can modify this, and second where must find this data (i'm hosting jar and jad files at brinkster.com, and wml file at tagtag.com). Too check that in .jad appear MIDP 1.0 (I believe 7250 is a 40 serie phone). Well, I'm lost. Thanks in advance and sorry my english.