lic.edat a pkg
Here are the steps to create a PKG to install edats (I couldn’t find a tutorial for it, so I made this aka  aldostools):

0. Get the make_package_npdrm.exe available in the SDK (eg. SDK 3.41) and copy it to a folder. eg. C:NPDRM

1. Create a new folder in that folder and name it with the title id of your game (eg. NPXX00999)

2. Copy to that folder the edat and the PS3LOGO.DAT file. eg:

XX0999-NPXX00999_00-PURCHASEDLICENSE.edat
PS3LOGO.DAT

lic.edat a pkg PasteShr lic.edat a pkg
3. Create a new text file, paste the following text, and save it as make_edat_pkg.bat in the same folder where you copied the make_package_npdrm.exe

Code:
echo ContentID = XX0999-NPXX00999_00-PURCHASEDLICENSE>package.conf
echo Klicensee = 0x00000000000000000000000000000000>>package.conf
echo DRMType = Local>>package.conf
echo ContentType = License>>package.conf
echo PackageVersion = 01.00>>package.conf

make_package_npdrm.exe package.conf NPXX00999
lic.edat a pkg PasteShr lic.edat a pkg
pause
4. Before you save the file, make sure that the ContentID matches the with the file name of the .edat file and the folder name near the make_package_npdrm.exe is correct.

5. Run the batch file: make_edat_pkg.bat
lic.edat a pkg