Thread: nuvi 610 has white screen after flashed with wrong firmware

Please, if somebody can help me to solve problem with Garmin Nuvi 610 Regional.
HWID 0596 , 10R-023635 , FCC ID: IPH-01060 , IC: 1792A-01060, bar code 23033944.
I want to use latest update 4.90.
After some problems with Webupdater I used Cure method and flashed it with wrong FW for other model.
It turns on, but there is just a white screen and the Webupdater doesn't see it anymore.
It can not enter preboot mode.
I then formatted it in FAT 32 and I have no backup.
Can You help me with SD card method and which files to use and script to again flash proper firmware?
I read something on the forum, but I don't understand most of things.
I saw that it is possible to use SD card method to flash propper firmware.
Please give me instructions what to do.

@alexandarser
It's flashed with wrong firmware but still has Mass Storage Mode available to format it, plus it turns on so there is some hope to restore it. Lack of preboot is not a positive sign however. Certainly HWID 0596 firmware contains the rrgn/ergn/xrgn commands to use in a txt file on SD card. The problem might be that it won't read from SD (i) because you've flashed a foreign fw to it which may not have the *rgn commands in it; or (ii) It may not be getting far enough in the boot process to read from SD. Please state what fw has been flashed to it and give a link to it.

This is actually in the wrong thread presently, perhaps a mod might move it.
Moved to Discussion thread. Thanks.

It is flashed with FW for Nuvi 310, HWID 0566 , SW version 2.30.

I have backup of the device after the flash and before the format, and when i put back those files on the device, Webupdater then is recognizing it as Nuvi 310 and is offering update to version 5.20.
I realy do not know how to enter pre boot mode, so I can flash again the device with propper FW, the screen is white and now it has different display drivers.
I have tried by holding power button and after 10 - 30 s coneccting the device with PC, but updater does not see the device.
I hope SD card method can help.

Ok, I'll help you with an SD pack to try flashing back to 6xx HWID 0596 but you must accept that further manipulation of this confused device might end with it hard-bricked, i.e. totally dead. First though, lets make some tests to be absolutely sure it's not seen in preboot by the PC. Be aware that 3xx & 6xx devices take only a few seconds to go into preboot and they stay in preboot for ~30 seconds only. By waiting too long you may have actually missed it. So first open Window's Device Manager and leave it visible on your desktop, then load the ORIGNAL 3xx HWID 0566 V2.30 RGN file to Updater.exe and select the radio button for 'USB Device'. Leave Updater's GUI visible on your desktop. Now hold the nuvi's power button down for only ~5 seconds before you connect it to USB (use a rear PC port directly, no hub and have the cable already plugged in to the PC before you run updater, start nuvi and connect). Listen for a Windows device connect sound and watch Device Manager to see if the nuvi appears. Hopefully you'll see this:

[Only registered and activated users can see links. ]

Report back what happens. If it's seen by Updater and Device Manager then flash the original firmware. Likely it won't be seen though. Remember, all this is at your risk.

The device is updated to version 5.20 (FW for Nuvi 310, HWID 0566 , SW version 5.20)

Code:

Please Login or Register to see the links

The device is not seen by Updater and Device Manager and it can not enter Pre Boot mode by described method.
I hope You can help me with SD card method to try to flash original FW for Nuvi 610 Regional, HWID 0596, SW version 4.90

Code:

Please Login or Register to see the links

I need proper files and script and instructions for propper flashing by SD CARD method.
Thanks in advance.
Coded direct Garmin links as per Rules to prevent refbacks. Please read [Only registered and activated users can see links. ].

Hmm. How did you flash the original V5.20 310 firmware to it? Clearly not in preboot? In Mass Storage Mode available did you put GUPDATE.GCD in Garmin folder and it flashed on next boot attempt after that? I need as much information as possible on how this device is behaving before going further. I assume Mass Storage Mode is no longer available either now?

Yes, same result as manually putting a gupdate.gcd into the Garmin folder, in a healthy device WebUpdater writes the new gupdate.gcd to the device's Garmin folder and the the GCD is initiated on next boot attempt to update the firmware (system software). That's happened with your 3xx/6xx so it means this device is probably functional to some degree. So far so good.

Now what about this question: "I assume Mass Storage Mode is no longer available either now?" It's important to know if MSM is available now with the original (not cure) firmware loaded.

Edit: I now see you've edited your post to add that you put a backup onto the device so I guess you must still have MSM available. I hadn't notice the edit before writing the above. So now you need to see if we can get this thing booting with 6xx fw started by 3xx boot. I'll make a hybrid SD kit for you to use, standby.

Look behind Spoiler below:

Spoiler:

Here is the hybrid SD kit as a zip file: [Only registered and activated users can see links. ]. It has Ldr.bin (boot.bin) from 3xx and 14.bin (fw.all_bin) from 6xx with HWID changed to 0566 and SWVer to 520. Extract the zip file directly to a small clean SD card. Don't use a large card or the device may not read it, even 256MB should suffice. I've included in the txt file the command to dump the nonvol memory region (rgn41) however it may be protected in older devices like 3xx & 6xx. With device fully off, insert the SD and then turn on. Hopefully it will read the card and even if the command to dump rgn41 fails, it should successfully flash rgn14 with the 6xx fw_all data from 14.bin. When it finishes, fail or succeed, it should reboot and if successful will show the normal logo screen and then operate like a 6xx even though it still has HWID 0566. If so, check if it can access preboot and be seen by Updater.exe then report back. NOTE: Probably goes without saying but this is all at your risk. If this works and it does have preboot access again we'll then try to flash the full 6xx HWID 0596 as an RGN to fully restore it.

Good luck, this should work. I don't think it's likely to damage it further but if it does it's toast most likely.

I did as You said, but nothing happened.
The display just flashed 2 times, but the device did not reboot and the logo screen did not appear and the device can not enter the pre boot mode.
In the root of the SD card was created 41.bin file.
In the folder Garmin /Updater/0566 was created file last_id.bin and another update txt file with the content:

nüvi 310 Software Version 5.20, UID: 3325492249, HWID: 302520614
------------------------------------------------------------------------------
Parsing "rrgn,41,2:/41.bin"
Error
Parsing "xrgn,14,2:/14.bin"
Error
Parsing "reboot"
Success

What to do next?
Is there any way to solve this?