Attachment are the upgrade driver and tooling.
Please install STK03H.exe and STK03N.exe;
Open CODE Folder, press Menu Key in the car DVR and connect it to PC and it will burst out a dialog like Photo 1;
Double click STK03HU.exe and it will burst out Photo 2, click Update, it will come out Photo 3, click the ... on the right side of Photo 3;
Then it will burst out Photo 4, follow the instruction, select and open"2270_16Bit_16M_DRAMSetting.txt" and get back to Photo 3 status, click OK to start upgrading. After successful upgrading, it will burst out Photo 5.