I have just received the 512MB model. However, there are no options for memory split.

I'm running the latest and greatest 2012-09-18-wheezy-raspbian.img.

See the video question (30 sec): http://www.youtube.com/watch?v=PENjgvxZkZo

How do I set the memory split for the 512MB model?

  • 1
    correct for what usage? The memory split for learning shell scripting is going to be very different from that for running a media center. Oct 23, 2012 at 22:37
  • In general :) I just wanted to know how to edit. Suggesting creating new tag: 512MB (not enough reputation) Oct 24, 2012 at 12:43

2 Answers 2


There is an updated firmware package available for the new 512mb Pi's. You can find the link in this announcement about the new upgraded Pi's, which allows you to utilize all of the Pi's memory and control how that memory is split between the GPU/CPU.

You may want to read these posts http://www.raspians.com/updating-the-memory-split-for-the-512-mb-raspberry-pi/ or http://hubcitylabs.org/unlocking-your-new-raspberry-pis-512mb-of-memory/ which explain how to set the memory split for the new Pi's.


Having analyzed, tried, and experienced three links (credit to @Steve) that are constanly being updated here is the answer that works for me as of momemt of writing:

rm -rf /boot/*.elf /boot/*.bin /boot/*.img
apt-get install git
apt-get install ca-certificates
wget http://goo.gl/1BOfJ -O /usr/bin/rpi-update && sudo chmod +x /usr/bin/rpi-update

Do not mistype 0 with O, in the snippet above both are capital O for October.

Do not mistype

To see if the new memory is allocated type free in the console to see free (available) memory.

  • When using these instructions I found that I would get the error start.elf not found when running rpi-update. To fix this I ran cd /boot and wget https://github.com/raspberrypi/firmware/tree/master/boot/start.elf and then ran rpi-update again. Oct 29, 2012 at 19:36

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