Thread: Nuvi 12xx,13xx,14xx,16xx with "software missing" on first step of flashing process

Weird,
although I have erased region 5 successful and unsuccessful wrote back the region 5
I have tried rrgn again the Region 5,
still can get the region 5 bin files,
once compare this Region 5 bin with initial back up, both are same.

So you've just rebooted your device?

Hi kunix,
This is my last Nuvi 255w with White screen to test, I am afraid if I reboot it, it will no longer Power ON again like the previous one.
I have attempt to do the Region 5 and 43, because I read your other post and told that 'maybe the screen is white because the LCD is unknown to the bootloader?",
that's why I tried to get the region 5 and 43 from working Nuvi 255W same HWID, attempt to overwrite the Region 5 and 43, and hopefully it can solve the white screen problem,
would like to add that both Nuvi 255w can be access Mass storage mode and preboot mode and also boot as normal, just only the screen is total white, unable to see anything, since this 2 Nuvi with me already got some time, and I think no hope to recover, I am trying whatever method, no matter what and prepare to make it dead.

Originally Posted by albert_chong

Hi All,
Thanks, I make a big mistake for wrongly use the command, my bad.

Another one Nuvi 255w will be killed if I power off it.

I attempt another Nuvi 255w with correct command
first I tried only with command
xrgn,5,1:/region_5.bin
Result:
Parsing "xrgn,5,1:/region_5.bin"
Error

2nd tried, erased region 5 and write back command
ergn,5
xrgn,5,1:/region_5.bin
result:
Update.log
Parsing "ergn,5"
Success
Parsing "xrgn,5,1:/region_5.bin"
Error
Parsing "reboot"
Success
------------------------------------------------------------
Now this Unit still connect with Garmin Charger, still Power ON,
if I off it, definitely it will not power on forever,
any idea to recovery it ?

To be honest, I don't understand what you were doing with this device after you've got this log.
It looks like you've already rebooted it a few time. Right?

Oh well,
the command come with "Reboot",
Since the screen is white, I can't see whether it reboot, I just can hear the "Du Du' sound, suppose its Reboot.
the first Nuvi, I have power off it by slide the power button to left, after that, it no longer power on.

now I have tested the 2nd Nuvi and not to Power Off it.

Okay, looks like understand now.... It's enough to avoid powering it off completely, because then RAM contents with the only alive copy of bootloader are lost.
Btw did you try the same update.txt commands on both nuvis? Or did you delete "reboot" command for the second try?

Yes, I just reinserted the SD card into Nuvi and
I have put on the Garmin Charger on the Nuvi, to prevent out of battery.
so that, I can keep on trying.