Hi, new to the site, life time nokia user. Just bought a used Nokia n900 on ebay for $330. It's a legit phone and everything, called Nokia and all. I was upssessing about this phone, not knowing what I was going to get myself into, now I realize it involves a lot of in depth stuff which is super cool to me. But, I turn the phone on, and trying opening the web browser, or camera, or w/e and the error "Operation temporarily disabled due to low memory" comes up. The application memory is fine and..yeah, so I got 770 Flasher (mac) whatever the hell that MEANS, it's just something I read, and loaded "RX-51_2009SE_3.2010.02-8.002_PR_COMBINED_002_ARM" onto the device. So it finished and the error still comes up. You don't understand how much it would mean to me if someone can help me. I have waited for this phone for so long, and it's so friggen cool, so thank you for your help!

You should read this page: http://wiki.maemo.org/Updating_the_tablet_firmware
Remember to flash both the FIASCO image and eMMC.

What does that mean!!! what else do I have to do from what I have already done? Thanks

ToJa92 was referring to this section of the page.
User data and other things are stored on the emmc, so it's a good idea to flash this too, along with the rootfs that you've already done.

I'm sorry, once again, I am brand new to all of this. I am using a Mac, can all of this talk is really complicated!

Read all of http://wiki.maemo.org/Updating_the_tablet_firmware and then focus on the Mac section - it can't be explained any siimpler. Sorry.

Yup, ok I did all that, even did it on a windows, and I'm still getting the Error, and..the security code wasn't reset, trying to get intact with the owner, but they aren't responding. I flashed it with 3.5 flasher, and nothing, nothing has changed.