Here are 3 bioses modded for you.
1625 Memory straps https://www.dropbox.com/s/qs3av04vv5e1skn/micron4802-1625%20Straps.rom?dl=0
1700 Memory straps https://www.dropbox.com/s/292axebpcc3pghb/micron4802-1750%20Straps.rom?dl=0
1500 Memory straps (may not work at all) https://www.dropbox.com/s/0x6767hd9idlnxm/micron4802-1500%20Straps%20May%20noy%20work%20under%20load.rom?dl=0

This is the usable Micron and elpida version of polaris bios editor https://www.dropbox.com/s/5r3z83yg15arymq/PolarisBiosEditor-micron-elpida.rar?dl=0