"As I look at myself from time to time the file system on firmware 1.76 and files examine. I have now made a small list, indicating the information on the files."

System Information (settings / System) -> name / IP address
system_data/settings/system.dat

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Profile -> User
user/home/10000000/username.dat

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Database -> Home Screen
system_data/priv/mms/app.db

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User application -> Icon
user/appmeta/CUSAXXXXX/icon0.png

System Application -> Icon
system_ex/app/NPXSXXXXX/sce_sys/icon0.png

Trophies -> number
user/home/user_number/trophy/data/sce_trop/trpsummary.dat

FONT
preinst/common/font/DFHEI5-SONY.ttf

Update History
user/appmeta/CUSAXXXXX/changeinfo/changeinfo.xml

Home Menu Sound
preinst/priv/systembgm/bgm_main.at9

Login Sound
preinst/priv/systembgm/bgm_login.at9

Fault history (Settings / Control)
system_data/priv/error/history/00000001.json

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User Authentication
system_data/priv/home/10000000/np/auth.dat

EULA (Settings / Control)
update/eula.xml

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Hope you all learned something new :p! Love you guys!