Reoccurring issue where PKG games download fully with PKG Linker but fail at 14 percent of installation with a signing fail error. If I reacquire the PKG and try again it sometimes fixes but it is frustrating to keep re-downloading and transferring files.
I know this is like 8 months late but I just had a similar issue and what worked for me was the following:
1. Unplug PS3 and remove the hard drive
2. Plug in and turn on PS3 on without hard drive
3. You will get a black screen or error message. Ignore this and put hard drive back in WHILE PS3...