I heard from Adafruit that "Raspbian Wheezy does not have the updated firmware for this much RAM" in regards to the Pi Zero. This doesn't make any sense to me, seeing as I run Wheezy on my Pi 2, which has more RAM. They also said that Raspbian Jessie is the only Raspbian compatible with the Pi Zero. Is this true?

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    You are correct, it does not make sense since the firmware is maintained independently of Raspbian; it is also simple enough to update yourself. It may apply to some old images.
    – goldilocks
    Commented Dec 20, 2015 at 20:11
  • :| well, if I update from wheezy to jessie will it make any substantial changes that could cause problems? Commented Dec 20, 2015 at 20:12
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    You should update unless you are aware of a reason not to. Jessie is now the current stable version. Major difference is it uses systemd instead of SysV init.
    – goldilocks
    Commented Dec 20, 2015 at 20:14
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    @goldilocks In the process of upgrading now, is there any way to disable to default boot to desktop setting via the command line? Commented Dec 20, 2015 at 20:16
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    I think systemd set-default multi-user.target should work. Let me know if it doesn't and I'll have a look at a clean image.
    – goldilocks
    Commented Dec 20, 2015 at 20:21

1 Answer 1


The last official Raspbian Wheezy image was 2015-05-07 and official images moved to Jessie afterwards. This was 5 months before the Zero was released, so didn't contain the firmware for the Zero or the pi-3 for that matter.

This can be fixed by booting them in an older pi, then running

sudo apt-get update && sudo apt-get upgrade

The SD card will then boot fine in a Pi Zero / Pi 3

I did exactly that and have uploaded the image here for Pi Zero and pi3 users:


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