3 Firmware Recovery Guide for TSBmini, TS Pro, TSL, TS-x79 TS, TS, TS, TSU, TSU Turbo NAS servers via recovery mode. . TS Pro II, TS Pro II+, TS Pro, TS Pro+, TS Pro, .. (If your NAS QTS firmware version is earlier than v, please click. Select your product to download operating system, utility, applications, document and check compatibility. Pro II+, TS Pro, TS Pro+, HS, TSH, TS, TSU, TS, TSU, QNAP, QNAP logo, QTS, myQNAPcloud and VioStor are trademarks or QNAP Turbo NAS models comply with different CE compliance classes.