hi.my laptop was at dell latitude bios revision a13 but i like a fool degraded it to revision a00.now to get it back to revision a22 it says that i have not plugged in my battery when i try to upgrade.please help
Welcome to the Community,
Have you tried reseating the battery? Make sure the battery has minimum 50% charge and your charger is plugged in to the system when you try to upgrade the BIOS.
If the system is booting to Windows,check if battery is getting detected and is charging when charger is plugged in.
Dell | Social Media Outreach | Global Social Media & Community
thanks a lot roshan.it worked when i charged the battery.:-)
Glad you got it working,