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This may be the wrong spot to post this, I apologize if it is - point me in the right direction and I'll post there. I am new to this site and was unable to find any info on the this matter on the internet.

I do not have a win or mac pc, using a chromebook and need to update the firmware to 4.40 on my astro 320. Is there any way to do this via micro sd card?

Thank you in advance for any and all assistance.