量产时出现闪存ID不符合什么意思？

量产时出现 NAND ID不符合： 指的是在测试过程中有对NAND id进行比较的测试项目，old nand id VS new nand id is not match; such as use jave code to write your test items for this step: read nand id;0x0022aer0 compare with old nand id(0x0022000); root cause: 1.when this product has been done DFU,but the board is abnormal to work,and then you have replaced the nand of not do DFU and follow the board to next test station which is includes compare NAND-ID,thus,the issue is happend.