HELP!!! VoiceLive Play GTX: NOISE, BOOT & RESTORE

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Dear all,


I have a VoiceLive Play GTX. It worked fine for couple of years. Just recently it acted strange: a lot of noise. I checked all cable and connection to the unit and amp. All are OK, but the noise can not disappear. Cables and amp are OK when I used another effect.

Some friends suggested to me to BOOT and RESTORE the system of the unit. 


But, I have been searching everywhere to find the right softwares/installer (SysExLibrarian? for MacOS) and VoiceLive Play GTX firmare. I can not find them anywhere. 


Please, anybody, really need help here. 
Thank you very much!