Certain phones have a very large and annoying amount of epoxy over/around the chip, to deal with this we have to heat the board to around 320/400+ Degrees Celcius. This is normally the stage in which damage occurs, we have contacts whom have successfully milled through the boards to expose the chips however that is with a £50,000 machine... far from our budget!

I will look into the manual option you have recommended, thank you.