Help to update RIO-L01C432B140 ---> B180 !

Hello.
My GX8, (rooted and unlocked bootloader, TWRP 3.02 recovery installed) is running under the L01C432B140 firmware !

The L01C432B180 firmware is avalaible to OTA ! Not possible to install it to OTA !!!

I'd downloaded it.

Now, I have a RIO-L01C432B180.rar file !

How to do ? Can anyone help me, please ?

Thank's.

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