BQ34Z100-R2: 修改DATA memory的值Number of series cell不成功，提示A read of data written failed comparison

Part Number: BQ34Z100-R2

输入电压位14V（已校准），当前BQ配置，4串磷酸铁锂电池，修改Number of series cell为8，可以正常修改，但是，修改Number of series cell为8后，再想改回Number of series cell为4，则改变不了，bqStutio 1.3.101 左下角显示“A read of data written failed comparison”，这是为什么？