I see, my G1W version: 2013.05237.01 -is it enough? What and in which way i should check else?
I wanted to bump this because while I can not say for sure that it will work on yours I bought a G1W from eStore009 back in Winter 2013.
It had a firmware like the way you have it typed. It looks similar to what I remember. I guess I should have checked first, but it slipped my mind.
I ran the FWS1088 file linked in the G1W FAQ without changing the file name to see what would happen. I got worried at first because I thought I bricked it, but after a few mins I got it to come back on. It booted in Russian and now has this firmware.
Since I bought it 4-5 months before that date and I remember it being something like 2013.05237.01 or so before I guess I have successfully updated my G1W non H I'm going to try a 15MB firmware next.
In your case though like jokiin says your camera can be different. It worked for me, but you CAN break your camera. If this is your only camera and you are not absolutely sure you are safe to update I would leave it alone.
newbie question: can the firmware in the zip file be used on G1W-C ? thanks.
Flashing a battery version camera firmware to a capacitor version camera will cause the last file to corrupt on shutdown I believe because the battery version shuts down slower and the capacitor will loose charge before it can shut down correctly.
:EDIT:
I was able to flash Shadow GT300W 1306180-SC-2 to my G1W, but had to rename the firmware file to FWS1088 for it to work.
The only thing is that with this firmware the menu key is record and the record key gets you into the menu.
Also WDR can not be turned off.
Here is a banged up car that just happened to pass the camera.