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ch4 pro r2 inching and self locking problem

Hello, bought some days ago, 2 new 4chpro r2 units with 2.7.1. firmware upgrade and today trying to install them I found 2 big issues: the first unit works only in self-locking mode, even if K5 switch is set to 0. the second unit instead works only in inching mode but with 1 second delay(K5 and k6 switch doesn't work) The only switch that is fully functional is s6 for both It seems to me that they have disabled the K5 and k6 switch on both units after the firmware upgrade moreover in the last version of android app, the inching software function was cancelled (anyone understand why??)
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