Hello!
I've got a HL Data Storage DVD writer CH15F. From what I understood it is a Hitachi-LG joint venture. However I can't find any support page with info or firmware. Please help me find the firmware for this device.

Try searching the hardware ID. Go to Device Manager and drop down the DVD/CD-ROM drives list and right click and select properties for the drive. Then go to the details tab and change the properties selection drop down to Hardware Ids. This should give you some better information to search as well as listing the present firmware version of your drive. In my case even though my drive is a Samsung it's listed as "TSST corp_CDDVDW_SH-222A_____SA00. The SA00 is the firmware version. A word to the wise. It can be very tricky finding the right firmware, and if you flash the wrong stuff you can end up with a useless drive. It might be safer to pull the drive and collect information from the tag including model and serial number and any info you think might be useful. Then contact the manufacturer for help. Be very careful about any instructions supplied to flash the drive. Most of today's drives are flashed using an executive (exe) file. It used to be done through the floppy A drive back in the day where it was possible to make a backup on the floppy before you flashed so you could always get back to what you had if something went wrong. It's almost safer to just buy a newer drive (20 to 35 dollars) and use your old drive as a secondary or save it as a backup for use later. Make sure if you decide to flash the drive that there is no disk in the tray when you run it. Are you brave?