Is it safe to update my raspberry pi 4s os using said raspberry pi?

[/RaspberryPi]

Hi, so I have this Raspberry Pi 4, and it needs to have the OS updated, but I don't have an actual computer/laptop; the only thing I have is my school Chrome book. unfortunately the Raspberry Pi site is blocked. I have a flash drive and the SD card I use for my current os any and all help would be greatly appreciated.

I've looked at the Pi site on my phone to find out how safe I'd be but the only answer I got was it was unsafe with no real explanation when I searched Google the only thing I could find was people installing the os with their computers/laptops and no one ever said anything to answer my question
submitted by /u/RiskCool
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Source: https://www.reddit.com/r/raspberry_pi/c ... _os_using/