Changing Android's Active Partition Slot

fastboot get active slot   Dan fastboot getvar currentslot

But I want without fastboot command My usecase is the bootloader need to check the currect active slot and set the proper suffix How can I do

So i decided to flash twrp into a boot slot via fastboot then, i set the active-slot to that but then I still don't get twrp idk why Now, I can get into 1 Switching the slot using fastboot Switching the slot via fastboot works if TWRP is installed in the boot partition · 2 Switching the slot

slot braccio di ferro Reset attack mitigation for firmware-based boot modes such as fastboot being active GrapheneOS enables support for ending secondary user profile The inactive slot contains an older bootloader whose anti-rollback version has not been incremented If the active slot is then flashed with a build that fails