# The downloaded file may have been corrupted or the known hash may be outdated

**URL:** <https://mne.discourse.group/t/the-downloaded-file-may-have-been-corrupted-or-the-known-hash-may-be-outdated/4674>\
**Category:** Support & Discussions\
**Tags:** mne-datasets\
**Created:** [April 8, 2022, 4:20am UTC](https://mne.discourse.group/t/the-downloaded-file-may-have-been-corrupted-or-the-known-hash-may-be-outdated/4674 "2022-04-08T04:20:00Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![PhD-GOAT](https://yyz2.discourse-cdn.com/free1/user_avatar/mne.discourse.group/phd-goat/32/1326_2.png) [@PhD-GOAT](https://mne.discourse.group/u/PhD-GOAT)\
**Post date:** [April 8, 2022, 4:20am UTC](https://mne.discourse.group/t/the-downloaded-file-may-have-been-corrupted-or-the-known-hash-may-be-outdated/4674/1 "2022-04-08T04:20:00Z")

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- MNE version: 1.0.0
- operating system: Windows 10

at tutorial [Clinical applications](https://mne.tools/stable/auto_tutorials/clinical/index.html#)

1. Locating intracranial electrode contacts
2. Working with sEEG data
3. Working with ECoG data

print error : ValueError: MD5 hash of downloaded file (temp.zip) does not match the known hash: expected md5:5133fe92b7b8f03ae19219d5f46e4177 but got 605a5841f3b0a30b9f39d8f334df08d4. Deleted download for safety. The downloaded file may have been corrupted or the known hash may be outdated.

1. Sleep stage classification from polysomnography (PSG) data  
: works well

There are three errors, what should I do?

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**Author:** ![alexrockhill](https://yyz2.discourse-cdn.com/free1/user_avatar/mne.discourse.group/alexrockhill/32/31_2.png) [@alexrockhill](https://mne.discourse.group/u/alexrockhill)\
**Post date:** [April 8, 2022, 4:35pm UTC](https://mne.discourse.group/t/the-downloaded-file-may-have-been-corrupted-or-the-known-hash-may-be-outdated/4674/2 "2022-04-08T16:35:32Z")

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Hello! I think this may be the same issue as here [fsaverage hash value mismatch](https://mne.discourse.group/t/fsaverage-hash-value-mismatch/4663). I would suggest seeing if that fixes your issue. (The solution is to update MNE e.g. `pip install -U mne`).

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**Author:** ![agramfort](https://avatars.discourse-cdn.com/v4/letter/a/7c8e57/32.png) [@agramfort](https://mne.discourse.group/u/agramfort)\
**Post date:** [April 8, 2022, 8:11pm UTC](https://mne.discourse.group/t/the-downloaded-file-may-have-been-corrupted-or-the-known-hash-may-be-outdated/4674/3 "2022-04-08T20:11:14Z")

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just released 1.0.1

you can now “pip install -U mne”

Alex