Thread: Nuvi Pre-boot Mode

My unit isn't bricked. Everything works except it won't be seen by my PC to do updates.

(I have 4 units, all with this problem, one is pin locked and I don't know the pin my sister used and she doesn't remember it, and lost all paperwork in Sandy when her house was washed away, one has a white screen, and the last one works but won't charge or access usb.)

I can't get into any diagnostic screen that lets me turn on the mass storage option instead of auto detect, and using updater.exe says that there are no updates for my unit. I think the firmware is corrupt and I want to wipe the unit and reload it with the factory load. But, can't get into USB mode to even start.

Hi
have a Garmin 2599.
it worked to see the Nuvi finally in updater.exe. but for very short time.
then when I clicked on "OK" a popup appears saying:
"The Garmin device is not responding. please ensure following and try again:
1. The Garmin device's Interface option is set to Garmin or Host mode
2. the cable is connected to the correct serial port
3. the GARMIN device is turned on."

updater.exe is started as admin and under compatibility mode xp sp3.
any ideas?
during map update cancelled the device started the boot loop...

thanks all

@Neflecrush
Answered you over here: [Only registered and activated users can see links. ]. Best not to cross-post, creates confusion sometimes.

Hi! Please help - how to enter pre-boot mode on nuvi 3597?

With the device fully OFF (not in standby) power it on and place your left thumb on and over the G in 'GARMIN' immediately it appears on the screen. If you get the timing right you'll see 'Loader' appear in the upper part of the screen. You may have to try a few times, placement and timing is critical.

Originally Posted by Butters

With the device fully OFF (not in standby) power it on and place your left thumb on and over the G in 'GARMIN' immediately it appears on the screen. If you get the timing right you'll see 'Loader' appear in the upper part of the screen. You may have to try a few times, placement and timing is critical.

Nothing =(

I have do it! Thank you!
And another question: i have custom boot splash screen and i want to change it to original GARMIN splash logo...how i can do it? I have re-flash firmware but splash not changed (( How change splash boot to original?

[Only registered and activated users can see links. ]

Originally Posted by Castus

Nothing =(

Then you weren't doing it right. It is tricky but I have an NA 3597 and it works in mine however often needs a couple of tries. It's essential that after any failed attempt to ensure you force the device fully off by holding the power button in until you see the option screen to turn it off, also finding the exact place to press the screen is crucial:

[Only registered and activated users can see links. ]

PS: To reflash region 16 it's much easier to use the SD method with xrgn write command then no preboot is required.