avrDude error Please help

Most of the topics I found on this are read only so I started my own.

I recently bought an uno from RS Electronics. It was working fine until I think I might have short circuited something by accident while trying to values with my multimeter. Ive been getting the error when trying to upload onto my uno avrdude: stk500_getsync(): not in sync: resp=0x00 avrdude: stk500_disable(): protocol error, expect=0x14, resp=0x51

I have tried holding the reset switch while trying uploading and uploading a new bootloader which didn't work. Tried using different computer, still doesn't work. Tried changing baud rates. Anyone know of wt else I can try.

hi! I have the same problem!
somebody help please!