Thanks @Stratos.
Yes @balbes150 has done a tremendous job because of him, my A5X-MAX got new lease of life because of him. I am able to boot from sdcard with 5.99+4.4 (Used old A5X-MAX1500 dtb provided by @balbes150) I have also successfully installed it to emmc. But with 5.99+5.3 i am unable to boot even from sdcard, any help is much appreciated.