The present invention is suitable for use in a communications system that downloads applications over a broadcast file system. Also disclosed is a silicon nitride sintered product comprising silicon nitride grains and a grain boundary phase of an oxynitride, wherein the composition of the sintered product is a composition in a triangle having point A: Si3N4, point B: 40 mol % SiO2-60 mol % Lu2O3 and point C: 60 mol % SiO2-40 mol % Lu2O3, as three apexes, in a ternary system phase diagram of a Si3N4SiO2Lu2O3 system. The method and compositions of the present invention yield stable, durable, highly efficient and cost-effective as well as potentially biologically active lead compounds on solid support. The intermediate layer is made of a solidified melt-processible thermoplastic solution which contains the first melt-processible thermoplastic and the second thermoplastic such that the first thermoplastic and the second thermoplastic exist as discretely discernable components dispersed relative to one another in an essentially non-homogenous manner. A server generates and maintains the ARFCN table which is initially provided to the wireless mobile device at manufacturer, during provisioning or as an over-the-air update.