![Error (avrdude: stk500_recv(): programmer is not responding) while uploading new Firmware to Ender 3 : r/3Dprinting Error (avrdude: stk500_recv(): programmer is not responding) while uploading new Firmware to Ender 3 : r/3Dprinting](https://preview.redd.it/lzrh40251l231.jpg?width=5312&format=pjpg&auto=webp&s=de5ba22a136154d99f8b5cf07e14dab2707a28ac)
Error (avrdude: stk500_recv(): programmer is not responding) while uploading new Firmware to Ender 3 : r/3Dprinting
![Failed to upload: avrdude: stk500_getsync() attempt 10 of 10: not in sync: resp=0x44 - IDE 1.x - Arduino Forum Failed to upload: avrdude: stk500_getsync() attempt 10 of 10: not in sync: resp=0x44 - IDE 1.x - Arduino Forum](https://europe1.discourse-cdn.com/arduino/optimized/4X/e/e/4/ee4d04915c8754f4b049044f09b80029a5ee689c_2_658x500.png)
Failed to upload: avrdude: stk500_getsync() attempt 10 of 10: not in sync: resp=0x44 - IDE 1.x - Arduino Forum
![Arduino nano ERROR soultion!! avrdude stk500_recv() programmer, upload opening serial port error - YouTube Arduino nano ERROR soultion!! avrdude stk500_recv() programmer, upload opening serial port error - YouTube](https://i.ytimg.com/vi/GeBz2o-syaI/maxresdefault.jpg)
Arduino nano ERROR soultion!! avrdude stk500_recv() programmer, upload opening serial port error - YouTube
![avrdude: ser_open(): can't open device "unknown": No such file or directory - IDE 1.x - Arduino Forum avrdude: ser_open(): can't open device "unknown": No such file or directory - IDE 1.x - Arduino Forum](https://europe1.discourse-cdn.com/arduino/original/4X/7/5/f/75fb84cceb041233e9659b624d0a93a2ced922b0.png)
avrdude: ser_open(): can't open device "unknown": No such file or directory - IDE 1.x - Arduino Forum
![Arduino Nano - "avrdude: ser_open():system can't open device "\\.\COM1": the system cannot find the file specified" - Stack Overflow Arduino Nano - "avrdude: ser_open():system can't open device "\\.\COM1": the system cannot find the file specified" - Stack Overflow](https://i.stack.imgur.com/1kNPb.png)
Arduino Nano - "avrdude: ser_open():system can't open device "\\.\COM1": the system cannot find the file specified" - Stack Overflow
![avrdude sometimes fails to read flash after uploading - Avrdude, stk500, Bootloader issues - Arduino Forum avrdude sometimes fails to read flash after uploading - Avrdude, stk500, Bootloader issues - Arduino Forum](https://europe1.discourse-cdn.com/arduino/optimized/4X/5/b/5/5b5ecaf118e8665f2138b52241277495b548d1ab_2_500x353.png)
avrdude sometimes fails to read flash after uploading - Avrdude, stk500, Bootloader issues - Arduino Forum
![Error (avrdude: stk500_recv(): programmer is not responding) while uploading new Firmware to Ender 3 : r/3Dprinting Error (avrdude: stk500_recv(): programmer is not responding) while uploading new Firmware to Ender 3 : r/3Dprinting](https://preview.redd.it/7040es151l231.jpg?width=5312&format=pjpg&auto=webp&s=161a4c9e5f2e98cf0085bd7b6241b29e96650902)
Error (avrdude: stk500_recv(): programmer is not responding) while uploading new Firmware to Ender 3 : r/3Dprinting
![avrdude: ser_open() : can't set com-state for "\\.\COM5" - Avrdude, stk500, Bootloader issues - Arduino Forum avrdude: ser_open() : can't set com-state for "\\.\COM5" - Avrdude, stk500, Bootloader issues - Arduino Forum](https://europe1.discourse-cdn.com/arduino/original/4X/e/f/d/efdca1cfe9c1caad027f9e41611e92803171002b.jpeg)
avrdude: ser_open() : can't set com-state for "\\.\COM5" - Avrdude, stk500, Bootloader issues - Arduino Forum
![Arduino Nano - "avrdude: ser_open():system can't open device "\\.\COM1": the system cannot find the file specified" - Stack Overflow Arduino Nano - "avrdude: ser_open():system can't open device "\\.\COM1": the system cannot find the file specified" - Stack Overflow](https://i.stack.imgur.com/cx8c7.png)
Arduino Nano - "avrdude: ser_open():system can't open device "\\.\COM1": the system cannot find the file specified" - Stack Overflow
![Arduino Nano - "avrdude: ser_open():system can't open device "\\.\COM1": the system cannot find the file specified" - Stack Overflow Arduino Nano - "avrdude: ser_open():system can't open device "\\.\COM1": the system cannot find the file specified" - Stack Overflow](https://i.stack.imgur.com/PCjNG.png)
Arduino Nano - "avrdude: ser_open():system can't open device "\\.\COM1": the system cannot find the file specified" - Stack Overflow
![Uploading error: Error:avrdude: ser_open(): can't set com-state for "\\.\COM3" - IDE 1.x - Arduino Forum Uploading error: Error:avrdude: ser_open(): can't set com-state for "\\.\COM3" - IDE 1.x - Arduino Forum](https://europe1.discourse-cdn.com/arduino/original/4X/7/b/b/7bbe50ed5d6e9d06659f00ef02d5800fb608b2ee.png)
Uploading error: Error:avrdude: ser_open(): can't set com-state for "\\.\COM3" - IDE 1.x - Arduino Forum
![ftdi - Arduino takes too long to upload, avrdude: ser_drain() error (macOS Big Sur) - Stack Overflow ftdi - Arduino takes too long to upload, avrdude: ser_drain() error (macOS Big Sur) - Stack Overflow](https://i.stack.imgur.com/ICmJ9.png)
ftdi - Arduino takes too long to upload, avrdude: ser_drain() error (macOS Big Sur) - Stack Overflow
![avrdude: ser_open(): can't open device "\\.\COM9": Access is denied. - Avrdude, stk500, Bootloader issues - Arduino Forum avrdude: ser_open(): can't open device "\\.\COM9": Access is denied. - Avrdude, stk500, Bootloader issues - Arduino Forum](https://europe1.discourse-cdn.com/arduino/original/4X/5/a/5/5a599607ba17e0f6fab970b65a3992b63195fda7.png)