Arduino Uno avrdude: stk500_getsync(): not in sync


hi everyone!

this evening i've run trouble arduino uno (i think it's original version, there no mention of revision on board) of 3 years old. when trying upload error "avrdude: stk500_getsync(): not in sync: resp=0x00". when uploading tx , rx leds don't flash. onboard on led burns (meaning has power) , when pressing reset l led blinks twice , stays off. there nothing connected of pins; no shields nor wires.

so far i've tried following:
1. pressing reset before uploading (after compiling, before uploading)
2. changing usb-ports
3. resetting ide , entire system
4. changing upload device arduino duemilanova (weird suggestion, i'll try right now)
5. removing drivers system, rebooting , reinstalling them
6. doublechecking com-port

suffice say, i'm getting bit disheartened. read somewhere resetting atmega16u2 might work (forumlink) i'd rather not try unless else fails.

just last week board working fine. before went unresponsive trying make old lcd shield sparkfun work. downloaded drivers github, instead of actual .cpp, .h , .txt files needed, got files in weblayout (in plaintext looked bunch of <"header"> "code" <"/header">) when rightclicking , downloading them. compiler caught error before uploading, though. after fixed library tried again , got error. since compiler caught error before uploading might unrelated, it's worth mentioning.

do guys have suggestions try before turning reinstalling bootloader?

perhaps blown. example static electricity or shortcut somehow.

it seems atmega328p working.
you confirm programmer (like usbasp or arduino isp) , use icsp header upload sketch programmer.

it seems data path of (virtual) serial port via usb not working. rewrite firmware atmega16u2, perhaps blown , rewriting firmware might not work.


Arduino Forum > Using Arduino > Installation & Troubleshooting > Arduino Uno avrdude: stk500_getsync(): not in sync


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