some1 release a new version 6.3x dudowngrader to the downgrade of psp firmware 6.31, 6.35, 6.38 or 6.39 ten 6.20. This is the port of the 6.31/6.35 downgarder Davee. 's new / fixed: - The sources are available - Fixed some bugs printf's - if the verification fails the MD5 on the updater 6.20, there will be a check in the file update to see if this is the version 6.35