Problem updating 8.2.10 -> 8.2.11

I am trying to update owncloud from version 8.2.10 to 8.2.11. I am using the update-plug-in of owncloud. The back up works, but then I get the error message:
"/www/htdocs/...../..../html/owncloud/data/updater_backup/8.2.11.zip extraction error"
And my provider (all-inkl.com) support says that there is the message:
"pcfg_openfile: unable to check htaccess file, ensure it is readable"
In addition, the support says that the access permissions of seem to be the problem. chmod of is set to 0777.

Any help appreciated!

Addendum:
Error mesage in the owncloud administration area:
Error PHP Automatically populating $HTTP_RAW_POST_DATA is deprecated and will be removed in a future version. To avoid this warning set 'always_populate_raw_post_data' to '-1' in php.ini and use the php://input stream instead. at Unknown#0

Changing chmod of < ..owncloud/data> did not solve the problem.

I have downloaded the owncloud-8.2.11.zip from http://ftp.icm.edu.pl/packages/owncloud/ and copied this zip-file into the <../ownloud/data/updater_backup> directory. Then the update process worked. Owncloud is accessible now without any problem (as far as I see). But how to avoid this effort in the future? Version 9 of owncloud is waiting for installation!

Hi,

if you have a backup, you could just remove ownCloud 8.2 entirely and install 10.0.6 fresh and import your backup

I have solved the problem. After coying the owncloud-8.2.11.zip-file into the backup_updater directory update worked. Then the other updates up to version 10 showed no problem.
The problem was - as far as I see it - the fact, that version 8.2.11 was not available an y more in the download area of owncloud community.
Thank You very much!

I have the very same problem. Where did you get the 8.2.11.zip file? Thanks.

Hi, I would recommend using this method:

https://doc.owncloud.com/server/10.0/admin_manual/maintenance/manual_upgrade.html