Can you show a pic how it look in Polaris editor? Open a fresh bios file without any changes.
Top right should have a drop down which shows memory types. By this you can figure which strap lines to edit for that memory. It is possible bios has 1 mem type. Although rare but possible. Other have 3 mem types like mine 570s. Etc.
Get the very latest polaris editor github.com/jaschaknack.
Best bios is your bios

For elpida this should work . For above 1500 straps use below. no need to change anything else except use the strap on mem slots 1500 and above.
777000000000000022AA1C00315A5436A0550F15B68C1506004082007C041420CA8980A9020004C
01712262B612B3715
For over clock try initially core 1150 mem 1950 from Windows tool like msi afterburner or other.
I'm not sure how to post a picture on this forum.. But if you mean the drop box on the VRAM box it says - EDW4032BAB - and there is only the one listed there
I downloaded a different version of Polaris and now it shows 0:200 - 0:2000 as the MHz timing numbers
I copied the straps on everything 1500 and above but I'm still only getting 650H/s for XMR and 13MH/s for ETH
(unstrapped cards are doing 530-550H/s with XMR , on the cards I flashed I'm getting 595-650H/s it jumps back and fourth every few seconds) Wish it would stay on the 1.2KH/s is shows when I first start the cards lol
@maverik77 - I cant PM you my email because of your setting and I have a noob account