For G8UGD's and DD0CW 's request and who interested, this is the patch that "Save SpectrumView button state" and also "show how much patch.zip are loaded", in order to understand without remembering if a patch.zip has been loaded before and delete it if necessary.
Even Evariste F5OEO agrees that everyone should be able to disable the spectrum if not necessary.
Just upload it via the upload form at the bottom of the pluto.php page and you will have the change immediately.
IMPORTANT: Remember to delete the patch.zip file before upgrade to the next complete firmware
73
Roberto IS0GRB