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- Wed Feb 25, 2026 2:10 am
- Forum: UHD drives
- Topic: Ultimate UHD Drives Flashing Guide Updated 2026
- Replies: 3662
- Views: 3099876
Re: Ultimate UHD Drives Flashing Guide Updated 2026 : Tool does not start
Hello, I have a BU40N that is currently on 1.02 and looking to flash to 1.03. My MKV details are below. I downloaded the all you need firmware file and the gui sdf tool. However after selecting the drive and proper file I click start however nothing happens. I tried on two computers and same result....