:Animated102:

HELP! (JK)


I have a weird problem with a 1490T where I am unable to flash boot.bin.
It is stuck in a reboot loop. I got this off of ebay, so I dont know what was done to get it into this state.
- The reboot behavior is just that garmin logo appears for about 5 seconds then reboots. No text displayed at the bottom.
- I can put it into pre-boot fine. PC and updater sees garmin usb device just fine.
- In preboot mode, i verified using g7towin that HW ID is 0972:
"nuvi 14xx Series Software Version 4.10 ID: 972"
- in preboot, i attempt to flash regular stock software, 0972-580.rgn, which has boot.bin, fw1_resources.bin, and fw_all.bin:
-- the first step seems to attempt to put the nuvi into a loader mode, but on this nuvi it goes quickly: "loader loading", reboot, to "software loading..." to "software missing" and sits there for a few seconds
-- on the pc, updater waits for a few seconds, and then goes to "erasing", and then throws up the error "The GARMIN device is unable to program the requested memory region."
-- the unit goes back into it's reboot loop

i have also tried:
- creating cure fw with kunix garmincure3. this works great on other 1490 nuvis i have tried it on, but this one it doesnt work, because it never flashes properly
- multiple other older versions of fw for 14xx (0972). all with similar failed result.

I did more experimenting with rgn_tool and attempting to create my own firmware versions to load.
I noticed that if i just put in fw1_resources.bin and fw_all.bin (with no boot.bin in first section), it seemed to load via webupdater, but that doesnt quite work.
It attempts to flash via webupdater, but didnt seem to do anything on the device (plus it was in Loader Loading... state so i think it was waiting for us to send it a ramloader)

Anyhow, it doesnt seem to want to let me update the boot.bin, cause everytime it's always back to the "nuvi 14xx Series Software Version 4.10 ..." in updater when in pre-boot mode. It wont update to recent boot.bin.

I have recovered several "dead" nuvis, but this one doesnt want to come back... I always thought if we can get it into pre-boot mode, it must be "revivable", right?!