How to change the current active partition slot?

How to change the current active partition slot? fastboot change slot Change CSC with one click; Remove FRP for new security patch Auto-detect file and select slot; Auto-extract for ZIP file; Ignore MD5 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

fastboot getvar currentslot switch slots ourselves using a Fastboot command Changing Android's Active Partition

fastboot get active slot I tried the fastboot update on windows on my thor device and am getting this error: Setting current slot to 'a' OKAY Finished Fastboot TO EDL Free Support From Our Official Telegram Group Read More 95 Total User 855 Total Auth Sucess 57 EveryDay Available Auth Slot 0 FLash