nokia x2-00 mmc ic jumper solution
If Memory card is not working in Nokia X2-00 and you are not able to used memory card in Nokia X2-00. It can be cause of water damage in it. It can be due to missing parts and damage prints and pins of memory card jacket.
After disassamble of Nokia X2-00 checck the mother board if there is some water damages rust carbon or burn parts. Clecn all the rust with electronics cleaner and apply heat to make it dry.
Find out the MMC IC that is inline with red color in above diagram and re sold and re flow it to solve MMC memory card problem in Nokia X2-00