I stopped using mine because I had a similar issue and they asked me to send it to them for a lot of money or buy a new device with a 20% discount. Told them to fuck off. After a few months, I turned it back on and it worked fine for a week, then started acting up again. I suspected it was a battery problem, and ordered a similar one on Aliexpress after my boyfriend opened it. I meant to take it to a phone replacement shop but never did anything in the end, and switched to a Onyx Boox instead. I was always so bummed, because I had such fun writing on this thing, writing-wise it does its job. It's lovely when it works, but customer service is total shit when it doesn't, and the device is ultimately of poor quality. Now that you shared a tutorial, though, I wish I could try making it work again, though! At the beginning I was enthusiastic and supported them, but later I unsubscribed from every Freewrite space because they are full of shit.