Solution 1:
Run command cd <BOE_INSTALL_DIR>/ i.e. cd /apps/sap/bi4
Run command modifyOrRemoveProducts.sh and see the Support Pack level
Solution 2:
Run command cd <BOE_INSTALL_DIR>/InstallData i.e. cd /apps/sap/bi4/InstallData
Run command more inventory.txt and see the full version including Support Pack and Patch level