Hi Can i ask for help/support about this model on this forum? I am having trouble using this programmer It keeps telling me that the chip is inserted backwards.. I normally use the GQ-4X programmer to read and write 24cxx and 25cxx...etc I don't desolder the chips, I use the test clip that I also bought from mcumall, this one: http://www.mcumall.com/comersus/store/comersus_viewItem.asp?idProduct=4481 And I never had any problems.
I am using the same test clip on the VP990 bu this won't work, either it read ok but the buffer is FFFFFFF Or, It gives an error message: "the chip is inserted backwards or already damaged" I am being told that I must desolder the chips as the VP990 does not work on soldered chips on board Is this right? Can someone give advice please ?