I tried to install EOS on my Galaxy S5 Neo using ADB sideload and always get the message after “Veryfying update package” that the “E: whole file sgnature failed” and then a second “E: signature verification failed”.
Has anyone got an idea what I could do?
Regain your privacy! Adopt /e/ the unGoogled mobile OS and online services
I understand that this is a warning, rather than error; that is it is seen but the job rolls on.
Are you using Windows ? Yours question reminds me of this Samsung Tab s6 Lite (SM-P610) - "failed to verify whole-file signature" at 47%.