Hi, I been lurking here a lot and learned a lot from great information I get here. I hear that There is a cure for green/pink tint from the A02 firmware. We've used the USB driver and flash tool to flash this mobile phone in flash firmware xbook.info is a Buzz U Flash Firmware File (Stock ROM) currently comes in zip package. The U running on Android version which is manufactured by Mediatek. Dec 23, · Upgraded to a dell u ultra sharp from dell. Upgraded to a dell u ultra sharp from dell. Skip navigation Sign in. Dell U monitor/Rig upgrade Rud3Bwoy. Loading. I've been thinking about buying another u, but I can't seem to find anymore ao2 versions (which mine is). Can I update my firmware to ao4. ColorEyes seems to have only Mac versions for download. revisions on the U but that could be solved with a firmware update (source. I am researching a possible upgrades to my Dell U Backlight bleed is the least do my worries: firmware problems, vertical line on g-sync.