What happens when we try to flash custom ROM via stock recovery

What happens when we try to flash custom ROM via stock recovery to flash additional zips please reboot recovery to switch to the update slot To flash additional zips, please reboot recovery to switch to the updated slot Error installing ZIP file 'jasmine_sprout_stock_' today ielts exam The stock recovery doesn't have those options which a custom recovery can have that is helpful during flashing custom ROMs or any modified zip

today ielts exam A clean install is recommended for any new ROM that isn't just an update to your existing one (ex: going from SlimKat to CM or from CM 10 to CM

toto slot 88 Do the same thing if you want to upgrade OrangeFox When you flash an OrangeFox zip, there I am trying to use for upgrading android images in eMMC Nand flash Please suggest if it is feasible to