How do i manually install the new boot loader image on the old ?

hi
How the new boot loader installed on older Image?
However, apart from installing the new boot loader image.
The Dreambox is my original
Thanks

Quote from Benkurd

why using old image?
flash new image is much better

I do not use the old image, I just want to know if they released a new boot loader, how to manually install the image?
Thanks

Please help friends
Thanks