Di flash/downgrade sendiri aja gan, gampang kok. Bahan : 1. Rom Kitkat, ane adanya yg versi S_134, download. 2. SP Flash Tool dan driver USB VCom download, 3. Smart Assistant (program bawaan lenovo & driver usb, install dari hp saat disambungkan dg pc/laptop, Built-in CD-ROM). 4. Kabel USB. 5.