which app for blocking the need for retuning?

[R7814N]

Which addon should I use to prevent auto tuning?

 

[Black Hole]

From Quick Start Guide:

disable-ota *, disable-dso *

These prevent the disruption that would occur if the HD/HDR-FOX updated its firmware automatically during the daily 0430 search, or reacted to an enforced retune There are however a few side effects (particularly disable-ota) which might or might not be a problem according to circumstances. For details of how to use them see Preventing External Events from Disturbing the CF (click).

tunefix-update

Bypasses the need to retune the HD-FOX/HDR-FOX by making appropriate modifications to the tuning data when required (instead of starting from scratch like a retune). This avoids the annoyances of retunes. To be effective, your tuning data needs to be up-to-date so that the package can start from a clean baseline. tunefix-update receives tuning updates in the form of package updates, which it does independently of the auto-update package. Use in combination with disable-dso for best benefit.