Layer problem after upgrade

i have recently upgraded my k1c with cfs adapter and upgraded the software as instructed. since then i have first and all layer issues. the nozzle prints from too high

Did you run complete selftest?

may be the z offset is wrong

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I’m having the same problem. After connecting the CFS-C and updating it to the version from the included flash drive, the printer doesn’t work properly during both leveling and returning to the home position. There’s about 5mm of space between the nozzle and the bed when the nozzle should be touching the bed during leveling.