If you want a bootable disk, to install the program on your computer, burn the ISO to a DVD.
Or are you saying there is a problem with UltraISO, in which case there are many freeware burners available, if your own burning program (if you have another one), will not do the job.
As to the limit, does that mean you only have a CD writer - if so, copy the ISO to a flash drive and ask someone to burn a DVD for you. Presumably this is a legitimate download and you have been supplied with the key to use, on
installation, when you have made a suitable disk.
Perhaps I haven't understood the problem.