You should only update if the official Navcore for your device actually has a newer bootloader than currently installed.
The only other reson to update is to update from a 4.xxx bootloader (Navcore 7.xxx) to be able to use SDHC cards, and for that case the 5.5112 is recommended.
Totally agree (as you've been told MANY times before on NUMEROUS forums)
Why, oh why, do you think you want to change your bootloader?????
Please do not post "thanks" but use the "reputation" star(*) bottom/left or "like" bottom/left buttons
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