Broom 2 update 56 plug-ins

How can i update all of 56 plug-ins (updates avalible) (broom2 fw 4.1.1)?

when i try update one by one i have got a bug. and when i try update dnscrypt-proxy2, my broom2 go to brick

nstallation Failed

Failed to send request: Operation not permitted
Collected errors:
 * opkg_download: Failed to download, wget returned 4.
 * opkg_download: Check your network settings and connectivity.

 * opkg_install_pkg: Failed to download lua-cjson. Perhaps you need to run 'opkg update'?
 * opkg_install_cmd: Cannot install package lua-cjson.
 Upgrading lua-cjson on root from 2.1.0-1 to 2.1.0-2...
Configuring lua-cjson.
Updating database.
Database update completed.

Please do not update the pre-installed plugins.