Have industrial embedded electronic products of the company, the CPU board on a preserve uboot in W25Q64 SPI flash and image, products appear in succession after put into use on electricity phenomenon cannot be started, recall and found some load uboot fail, have a plenty of uboot check CRC error when started to read the image, the calibration image failed products, some reset it after a few times can check is successful, the rest will not check is successful, check found in the flash chip off you can resume normal welding, again with a burning device read the content of the chip, found that did not change, then use soldering iron by conductive glue to heating of the flash chip on the board surface, also can return to normal, consulted a lot of friends do hardware, have said they don't understand, who is a great god can help me and explain, [face] monkey2:036 PNG [/face]