Thread: Help with Maps on Garmin KNA-G420AT

Do you update FW on your KNA to FW 4.20?

[Only registered and activated users can see links. ]


[Only registered and activated users can see links. ]

This is in new FW 4.20:

Changes made from version 4.10 to 4.20:

Corrected new ICAO list overflow issue.
Added support for maps greater than 2GB in size.
Fixed stability issues when parsing bad weather county warning file.
Updated to allow locking maps to UID from external media.

Changes made from version 4.00 to 4.10:

Added support for high-density SD cards to handle future map updates.

I have a KNA-G430TH and cannot for the life of me get the 4.20 update to work.. It just sits there forever with "Transferring data.." on the screen after I choose yes to update the software .. most most frustrating.. left it for 30mins and still no luck .. I am stuck on v2.80 erk

Im having same problem KNA-G421 wont even give option to update firmware when sd card is inserted. But with laptop i added latest maps and they wont load cause of firmware but unit wont update latest firmware help.

Originally Posted by ORAK

Try this KNA-G430 Singapore/Malaysia, Austrailia.

[Only registered and activated users can see links. ]

Installation Instructions

1. Create a 'garmin' folder on an SD data card (must be at least 16mb space available on the card).
2. Download the appropriate self-extracting archive file onto your hard drive.
3. Run the downloaded executable file.
4. Click on Browse and select the SD card reader in the list, then select the 'garmin' folder.
5. Click Unzip to save the files onto the 'garmin' directory on the SD card.
6. Wait for the message that the update was unzipped successfully and close the updater.
7. Safely remove SD card from PC.
8. Make certain Hideaway Navigation System is off.
9. Insert SD card into Hideaway Navigation System. If there is already a card there, temporarily remove it.
10. Turn on Hideaway Navigation system.
11. Your Hideaway Navigation System will ask if you would like to update software. Answer 'Yes'.
12. The update will begin. Do not power off unit while the update is in progress. When finished you can verify the update by checking the version number in Menu->Settings->About->Software.
13. Remove SD card.

The SD card no more than 2GB, I recommend 1GB or less and formatted in FAT32

Hi ORAK i have tried this and its failed to load upgrade software i have new maps on unit but they will not load as im thinking my firmware is too old my issue is getting the new firmware to load on unit