Autobouqetsmaker error: tuning failed fatal

Quote from abu baniaz

Someone else in Reading has posted similar problem.

Backup your lamedb to your PC. Found in /etc/enigma2/

Stop enigma2 with "init 4" command

Delete lamedb

Restart

Scan cable only

Restart

Attach this new lamedb and lamedb5 file here. It will be used to update the provider file with a different frequency.

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how do I

Stop enigma2 with "init 4" command please ?