* about 1MB (2048 blocks), Env is stored after the image, and the env size is
* 0x2000 (16 blocks), 8 + 2048 + 16 = 2072, enlarge it to 2080.
*/
* about 1MB (2048 blocks), Env is stored after the image, and the env size is
* 0x2000 (16 blocks), 8 + 2048 + 16 = 2072, enlarge it to 2080.
*/