I tried to dualboot stock 4.3 with carbon rom 4.4 kitkat then i get error code 7 for outdated recovery and i got an error saying unable to mount preload then i restored my carbon rom backup and still got the same issue at the end after restoring data, but everything is working fine. Was there something important in there? I am constantly getting this error and it's annoying, this never happened before. I'll attach the log.
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