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- Mon Jun 06, 2022 8:32 pm
- Forum: Other Ninebot Scooters
- Topic: (TUT) Unlocking the Ninebot F-series (F20, F25, F30, F40) to 30 km/h (18.6 mph)
- Replies: 101
- Views: 518229
Re: (TUT) Unlocking the Ninebot F-series (F20, F25, F30, F40) to 30 km/h (18.6 mph)
I have unfortunately upgraded to DRV 5.6.9 and it really sucks. I'm trying to downgrade it to 5.4.9 or another earlier version using IAP and Ninebot Flasher, however both these apps say 'bad file' when trying to select the drv549.bin.enc file. What's the recommended way of downgrading firmware on F...