LG E900 Memory card not working problem solution

I have found a solution to solve the hardware problem with the LG E900 Optimus 7,
showing the message 'Memory card not working' Your memory card has changed, is damaged or is non-compatible.

Flashing a new firmware or restoring images with zune does not solve the problem!

This message, if shown on a LG E900, implicates a hardware error with the NAND flash memory,
a Toshiba THGBM2G7D4FBAI9.
The memory chip is soldered to the top layer of the 2-layer mainboard, together with the led, sim card holding, head phone jack...

only rehot abd all will be ok