After several years of membership in this community, I thought to upload a small guide to repair the MediaNav Classic with dead NAND flash.
When you enter WinCe mode, if Storage Card 1, 2, 3, 4 are invisible, it means that the NAND memory of the device has gone to heaven.
By the way, as a method of entering the Win CE mode, I recommend the short between R1022 and ground. This has always worked for me, whether the NAND was dead or not.
This method requires knowledge of electronics and a lot of attention.
Normally, the most effective method is to solder a new NAND, but given that LG smart people thought of sticking some super glue under it, this is very difficult and can damage the board.
I, one, admit, I pull them out, because I have no intention of putting another one back in.
We need:
1. A 4GB MicroSD card + MicroSD to SD adapter (I understood that 8 GB would work, but I didn't test it). I used a 4GB Maxcell class 10 card.
2. Wire soldering tools (letcon, soldering gun, flux, solder etc)
3. An image with the firmware that you can download here:
https://mega.nz/file/GU9ERaaI#4_gFY9...BW3Pq8mB9CUe6Y
4. The win32diskimager program that you can download here:
https://www.softpedia.com/get/CD-DVD...k-Imager.shtml
Next.
First and foremost install the win32diskimager program and then open it. Insert the microSD card into the PC / laptop. Click on the icon with that little blue folder and select the ISO with the firmware so that it looks something like this:
1.jpg
To the left of the blue folder under "Device" select the letter that corresponds to the microSD card.
Then press "Write" and wait for the magic to end.
Now comes the interesting part. Personally, I soldered a SD to microSD adapter in which I inserted the microSD so that if it breaks I don't have to solder another one in place, just program it and insert it in the adapter. One tip, try to use as short wires as possible, it didn't work for me with some 10cm wires and I cut them in half. I lost 2 days because of this.
Open the navigation, remove the motherboard and turn it upside down. The joints are made according to the picture below.
1p.jpg
If all is well, when you insert the microSD card in the adapter and start the navigation, it should start in the main menu. Or ask for the code.
I hope this guide was helpful. I peeked at dozens of small resolution pictures until I learned how to do it.
I read somewhere that the old NAND must be removed from the board or L1000 (the power supply coil for the NAND) in order to work. I don't know, I didn't check with the NAND soldered, I take out their NANDs completely and it works.
For those who do not have SD to microSD adapter and want to solder the card directly to the board, skip pin 4 in the picture above. Pins 4 and 7 are grounded and common in adapters, but beware of poor adapters, some have pins 4 and 7 not soldered together inside the adapter, so it's best to solder both wires to mainboard ground.
Good Luck !
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