Repair bricked PNA / GPS Navigation with Windows CE

This guide is for bricked/dead YFGPS 3.5″ chinese PNA devices (GPS Navigations with Windows CE), most of them are made by YFGPS,  and the only difference between all models is the main housing. If your PNA is powered by SAMSUNG S3C2440 400Mhz, Windows CE 4.2 and the screen is 3.5″ – this guide is for you :)

First, you need to know, which is your PNA version? Type of Nand Flash/ SDRAM/ Processor?

Here we have some specs example of YFGPS device:

ROM Version: V26_Y17S_T4_1_10, WINCE 4.2 CORE for PNA GPS_MODEL_17_S_V1 2006-11-04
CPU: Samsung S3C2440AL-40 400MHz
ROM: NANDFLASH 32MB (Samsung K9F5608U0D)
RAM: SDRAM 64MB (2 x W9825G6CH-75)
LCD: TFT 3,5″

How-to flash your bricked/dead PNA and bring it to the life again:

1. Place all files on a FAT formatted SD card (don’t use SDHC cards):

Boot17S.bld
Logo17S.bmp
OS17S.img
U2B17S.bld
YFAPP.wzp
YFormat.fmt

Download the files

Note: in the GPS.rar archive there two versions of the ROM, if your device starts with inverted colors use the files from the second archive.
2. Reboot your PNA, now it will get start the update process.

Follow the instructions on the screen and you will get to the main menu after few minutes :)

You are done, your PNA is working again!

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