Full disclosure, I am bone stupid with computers and most technology. I have an old imac (mid 2011) that runs Yosemite 10.10.5 and for months I havent been able to upload photos off my phone on to my computer, ( usually I would just plug it in and photos would open and I could import them no problem, but it doesnt seem to work anymore. I wonder if I should upgrade my operating system? Do you think the old machine I have would handle whatever the current OS is? Im a bit scared of upgrading for fear of losing all of my pictures that I have on my computer because I don't have a backup for them. any thoughts? Or is there any other way to transfer the images off my phone without using photos? itunes does not recognize my phone. Thank you very much for any help.