#define DFU_ALT_INFO_RAM \
        "dfu_ram_info=" \
        "set dfu_alt_info " \
-       "Image ram 0x200000 0x1800000\\\\;" \
-       "system.dtb ram 0x7000000 0x40000\0" \
+       "Image ram $kernel_addr $kernel_size\\\\;" \
+       "system.dtb ram $fdt_addr $fdt_size\0" \
        "dfu_ram=run dfu_ram_info && dfu 0 ram 0\0" \
        "thor_ram=run dfu_ram_info && thordown 0 ram 0\0"
 
        "kernel_addr=0x80000\0" \
        "fdt_addr=0x7000000\0" \
        "fdt_high=0x10000000\0" \
+       "kernel_size=0x2000000\0" \
+       "fdt_size=0x80000\0" \
        "sdbootdev=0\0"\
        "sdboot=mmc dev $sdbootdev && mmcinfo && load mmc $sdbootdev:$partid $fdt_addr system.dtb && " \
                "load mmc $sdbootdev:$partid $kernel_addr Image && " \