LimeSDR-USB FPGA Gateware Configuring

Hi.
I bought a LimeSDR-USB Board last year, and I want to update some logic in FPGA.
In LimeSuite GUI ( LimeSuiteGUI_20201029_480bfea.exe, there are some FPGA Programming Options :
FPGA RAM, FPGA FLASH, FPGA RESET
image
How can I configure FPGA gateware to FPGA SRAM Directly?
Do I need an USB-Blaster Hardware or something else?

I’m very grateful for all your help.
yjww