GL-AR300m SPI Uboot reflash, need help from anyone with a dump file. Thx

I've done a bit of research, (and have done this on 2 other devices) I just really only need a clean dump file for the Uboot restore if anyone would be so kind. Thanks in advance to anyone that could help please.

GL-AR300M-Ext (Nor and Nand) 16/128 128ram
winbond 25q128jvsq 2037