Custom Edid for AVR black screen Issue

I edited my edid file to drop 10 and 12 bit and avoid black screen issue with Intel graphic card and denon avr

see here for info:

Occasional Refresh Rate Change Problems

Original edid was created using getedid script, i edited edid file with 8 bit flag

And now what are the steps ? i suppose that i must edit also edid.cpio file and is not enough to overwrite edid.bin file in /storage/.config/firmware/edid

i followed manual guide

Custom EDID [LibreELEC.wiki] from point

Next a cpio archive file will be created which will be loaded at boot: 

to create a new edid.cpio

but some commands give me error

at Search for “extlinux.conf” or “syslinux.cfg” and edit it. Only one of them is available.

nano -w /flash/syslinux.cfg

seems that the parameter -w doesn't exist cause it ask to check the valid parameter for nano

Seems to be cause edid.cpio contains newedid.bin parameter

thank you for all

Ok update for community

Problem : with autoframerate switch I get black screen on start or stop of a film

Denon x2000 HDMI 1.4

Tv Panasonic vt60

HDMI cable expensive and tried other cable

Beebox Intel n3150 but I didn't remember if Chromebox had this problem

Read somewhere that the problem is an hardware bug of Denon

Solution tried:

Captured edid

Modify edid to force 8bit

Checked with dmseg that bpc was set to 8

Checked via avr that bpc is 8

Still have problem so cause is not waf compliant I set gui to 24 and leave autoframerate switch on

Probably not a good solution but is the best solution until I will change my avr

mmh i do some reverse engineering

deleted edid via command getedid delete

without edid i verified via dmseg that bpc is always set to 8bpc (several restart with avr on or off)

Verified during black screen problem that bpc was 8 (via denon menu)

Found out that if i switch hdmi via remote tv (hdmi1>hdmi2>hdmi1) kodi gui reappear

so seems that my problem is not due to bpc bug