Fanuc Starting System Software Please Wait -

Even with a good battery, power surges, lightning strikes, or simply turning off the main disconnect too quickly after shutting down the control can corrupt the SRAM. The "System Software" cannot parse corrupt files (like ladder logic or tool offset data).

For newer controls (iHMI or 30i-B), you can enter IPL (Initial Program Loader) mode to reinstall the system software: fanuc starting system software please wait

: A specialized maintenance mode accessed by holding PREV + NEXT during boot. It is used for advanced setup tasks like loading I/O configuration files or restoring system images. Even with a good battery, power surges, lightning

Once you have restored your machine, follow these three golden rules to never see the "Please Wait" loop again: Even with a good battery