Machine (CNC 2418 Grbl 0.9) I installed a fimware for benbox software LX.hex,

Machine (CNC 2418 Grbl 0.9)
I installed a fimware for benbox software LX.hex, that did not work, then
Install the firmware https://github.com/grbl/grbl after that stopped working as it should, the z axis does not move, and the x and y axes are locked in ocaciones.
If a command is sent to move the z axis the arduino does not respond and the buffer accumulates the commands.

Do you think i have to buy another grbl card or the firmware is damaged or is not supported?

I’m currently trying to get GRBL to work. The 1.1 edge implements a laser mode ($32=1) that allows for a continous movement through different commands.
I’ve had a fair bit of struggle where the GRBL system locks up and ahows me an ‘alarm’. It was due to the endstops being triggered. If you set $10=19 (so you get the endstops which is at 16) on as well, what to you then get? If a contact is triggered it miht lock up and show you ‘Alarm’ in the beginning of the status message. This requires that the connection is re-esatblished.