Closed Help firmware and unlock huawei b593s-931

Hallo, i have Globe Tattoo. My Modem is a Huawei B593s-931

SN: F5Y7S15313005011
Hardware version: Ver.A
Firmware version: V200R001B270D15SP07C158
Firmware build time: Nov 4 2014

I want to change the FW from Nov 4 to Aug. FW or the orig. Huawei FW

I have try so many tutorials from here but it not works.
also i not know if i must do the simcard inside or outside or sim from globe or other.

i hope some people can help me. Thx in advance

ano po ba OS gamit mo sir? yun modem ko di madetect sa pc. may drivers ka po ba?