topic How to flash LPC55S69-EVK board in ISP mode? in LPC Microcontrollers https://community.nxp.com/t5/LPC-Microcontrollers/How-to-flash-LPC55S69-EVK-board-in-ISP-mode/m-p/1078758#M41503 <HTML><HEAD></HEAD><BODY><P>Hi!<BR /><BR />I was trying to resolve another issue with an audio example but during experiments, my development board switched to non-working state:<BR />- I can't upload and debug any app via SEGGER Ozone debugger (it says "No valid application in flash: Wait until bootloader is done.", then loses connection with the board;<BR />- I can't upload and debug via J-Link GDB Server and host GDB client;<BR />- can't do nothing with FlashMagic tool (It detects my board as LPC1768 device. I change it to LPC55 and try to start the process, but the app says "Operation failed. Failed to autobaud."). It seems I need to check the link mentioned there.</P><P></P><P>I think the issue can be caused by the J-Flash Lite tool that I tried to use to flash the precompiled example app on the board.</P><P></P><P>I also have tried to short J10 jumper and press reset, but nothing has changed.</P><P></P><P>Thanks in advance for helping.</P></BODY></HTML> Tue, 11 Aug 2020 08:55:55 GMT sergey_shidlovs 2020-08-11T08:55:55Z How to flash LPC55S69-EVK board in ISP mode? https://community.nxp.com/t5/LPC-Microcontrollers/How-to-flash-LPC55S69-EVK-board-in-ISP-mode/m-p/1078758#M41503 <HTML><HEAD></HEAD><BODY><P>Hi!<BR /><BR />I was trying to resolve another issue with an audio example but during experiments, my development board switched to non-working state:<BR />- I can't upload and debug any app via SEGGER Ozone debugger (it says "No valid application in flash: Wait until bootloader is done.", then loses connection with the board;<BR />- I can't upload and debug via J-Link GDB Server and host GDB client;<BR />- can't do nothing with FlashMagic tool (It detects my board as LPC1768 device. I change it to LPC55 and try to start the process, but the app says "Operation failed. Failed to autobaud."). It seems I need to check the link mentioned there.</P><P></P><P>I think the issue can be caused by the J-Flash Lite tool that I tried to use to flash the precompiled example app on the board.</P><P></P><P>I also have tried to short J10 jumper and press reset, but nothing has changed.</P><P></P><P>Thanks in advance for helping.</P></BODY></HTML> Tue, 11 Aug 2020 08:55:55 GMT https://community.nxp.com/t5/LPC-Microcontrollers/How-to-flash-LPC55S69-EVK-board-in-ISP-mode/m-p/1078758#M41503 sergey_shidlovs 2020-08-11T08:55:55Z Re: How to flash LPC55S69-EVK board in ISP mode? https://community.nxp.com/t5/LPC-Microcontrollers/How-to-flash-LPC55S69-EVK-board-in-ISP-mode/m-p/1078759#M41504 <HTML><HEAD></HEAD><BODY><P>Hi</P><P>You can't connect your LPCXpresso55s69&nbsp; board.</P><P>You could try below:</P><P>1 update the on board debug firmware with LPCScrypt. try CMSIS-DAP as well.</P><P><span class="lia-inline-image-display-wrapper" image-alt="pastedImage_1.png"><img src="https://community.nxp.com/t5/image/serverpage/image-id/110487i6AD1D3131918859F/image-size/large?v=v2&amp;px=999" role="button" title="pastedImage_1.png" alt="pastedImage_1.png" /></span></P><P></P><P>2. use MCUXpresso IDE connect board in ISP mode, do mass erase.&nbsp; then connect board again.</P></BODY></HTML> Wed, 12 Aug 2020 09:17:49 GMT https://community.nxp.com/t5/LPC-Microcontrollers/How-to-flash-LPC55S69-EVK-board-in-ISP-mode/m-p/1078759#M41504 ZhangJennie 2020-08-12T09:17:49Z