Linksys Wrt54GS v2 64MB upgrade nvram init string

Hardware Questions and Recommendations
1

Anyone know what the NVRAM init is required to allow the 64MB ram to be seen on the wrt54gs v2 routers the original chip was 32MB the new chip is HY5DU121622D(L)T(P)-J

2

I guess it may be possible using

sdram_config=0x0063
sdram_ncdl=0
sdram_init=0x0113

Please confirm if anyone tried it