Did you try to modify the update package? It looks like the update package doesn't have the same signature as it should.
Do not try to open up the ZIP file provided, just place it on the external SD card without touching it.
If you get another error after that, please the new error.
"FDR" -> Factory/Full Data Reset does not replace applications that have been deleted.
The only way to fix is to put them back or RSD/Flash back to stock.
I hate these threads.
People remove apps and wonder why the upgrade doesn't work.
Don't remove factory applications, freeze/disable them!!!!!
Removing them will remove the ability to upgrade until the OS is back to stock.
The installer checks to make sure that the system and application area is untouched.
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