# Install problems ZeroW

**URL:** <https://forums.pimoroni.com/t/install-problems-zerow/7430>\
**Category:** Support\
**Created:** [March 28, 2018, 1:22pm UTC](https://forums.pimoroni.com/t/install-problems-zerow/7430 "2018-03-28T13:22:05Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![Mlshirley](https://avatars.discourse-cdn.com/v4/letter/m/df705f/32.png) [@Mlshirley](https://forums.pimoroni.com/u/Mlshirley)\
**Post date:** [March 28, 2018, 1:22pm UTC](https://forums.pimoroni.com/t/install-problems-zerow/7430/1 "2018-03-28T13:22:05Z")

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Please help! Trying to install unicorn hat for mood light and airdac for pirate radio (separately) - failures for both! I have new distros of stretch lite (March 13 release) on new micro sd cards, 16 or 32 gb. WiFi is working - google ping is responding in th 50ms range with a few spikes to 120ms, about every 10 sec.

I’m using curl [get.pimoroni.com/unicornhat](http://get.pimoroni.com/unicornhat) | bash. Sometimes I get nothing downloading. Sometimes I get the full download but then get hung up with “updating apt indexes”.

Is there anything else I can try? Or just keep doing same and hope for a break in internet traffic? Why does the process keep hanging up?

Newbie pi user here… frustrated with my new toys LOL

Thank you!

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**Author:** ![gadgetoid](https://sea2.discourse-cdn.com/flex016/user_avatar/forums.pimoroni.com/gadgetoid/32/13_2.png) [@gadgetoid](https://forums.pimoroni.com/u/gadgetoid)\
**Post date:** [March 28, 2018, 2:14pm UTC](https://forums.pimoroni.com/t/install-problems-zerow/7430/2 "2018-03-28T14:14:54Z")

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What happens if you run: “sudo apt update” on its own? How long does it take?

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<div class="post-metadata">

**Author:** ![Mlshirley](https://avatars.discourse-cdn.com/v4/letter/m/df705f/32.png) [@Mlshirley](https://forums.pimoroni.com/u/Mlshirley)\
**Post date:** [March 28, 2018, 4:54pm UTC](https://forums.pimoroni.com/t/install-problems-zerow/7430/3 "2018-03-28T16:54:56Z")

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after 15 minutes and one connection timeout that it spontaneously recovered from, I saw some action. But here is the message:

Hash sum mismatch  
Hashes of expected file (file size 11656328 followed by 3 lines of letters and numbers, SHA256… then SHA1… then MD5Sum  
Hashes of received file (file size 110590 and same 3 lines with different alphanumeric.  
Reading package lists… Done  
E: the repository ‘[http://archive.raspberrypi.org/Debian](http://archive.raspberrypi.org/Debian) stretch Release’ does no longer have a release file  
N: updating from such a repository can’t be done securely, and is therefore disabled by default  
N: see apt-secure(8) manpage for repository creation and user configuration details

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<div class="post-metadata">

**Author:** ![gadgetoid](https://sea2.discourse-cdn.com/flex016/user_avatar/forums.pimoroni.com/gadgetoid/32/13_2.png) [@gadgetoid](https://forums.pimoroni.com/u/gadgetoid)\
**Post date:** [March 30, 2018, 9:10am UTC](https://forums.pimoroni.com/t/install-problems-zerow/7430/4 "2018-03-30T09:10:53Z")

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This is a - possibly transient, but it’s hard to tell - network problem either with WiFi communication or your internet. You might be able to get it working by running (and be careful typing this):

```auto
sudo rm -rf /var/lib/apt/lists/partial
sudo apt update

```

If you have an ethernet cable you can plug into it to do a full update, it might help also.