Once this occurred, I started researching and discovered this that this is a common problem with all of their tablets, I suspect they are buying rejected seconds or failed warranty tablets from their supplier for $20-$30 and selling these as a new tablet. Spend the extra and get a reputable product, Ancel is not one of those, its a cheap Chinese rubbish product using the worst tablets available, they are so terribly slow and glitchy as a tablet, they feel like 10-year-old no brand tech out of the box. This is one of those times you need to read a review and not ignore it because it seems to be a great deal. Ive wasted enough time and money on Ancel, TRULLY RUBISH PRODUCTS, even worse after sales service and don’t believe a word of their tech support promise, it does not exist and they don’t understand a word of English. Based on my experience so far, I expect that will be entirely true so instead, I'm trashing this machine and saving my money. After threatening a bad review they provided an address to ship the product back to China where other reviews have told me, I will never see it nor hear from their support again. Ancel's response (After several emails) was to send me a video showing me how to replace the battery within the unit using a soldering iron. I used the machine twice after that and it died completely within 60 days of ownership. I contacted their supposedly rapid response tech support and never got a reply. The Scanner proved to be faulty from day one, the DPF regen which was the main reason for my purchase did not work with any BMWs whatsoever. I purchased a new Ancel X7 from Ali express as it was a few dollars cheaper than the eBay vendor and thinking that dealing directly with Ancel would provide some form of support.

Ancel x7 update