Kmart has embraced AI to transform the shopping experience, what you need to bring older Macs and PCs up to speed, Dreame has announced the world biggest sport star as its new global ambassador, we take a look at the Honor Magic 8 Pro flagship smartphone, Sennheiser unveils its new Momentum 5 wireless headphones, Xiaomi releases its 17T smartphone series and we’ll answer all your questions in the Tech Guide Help Desk.