Use the official SDK,Use IAR software for burning official firmware provides six versions,flash_debug and flash_release Failed to record successful error content: is encountered an error and two
warnings,Wed May 18, 2022 10:01:05: Verification error at 0x800'0000: mem = 0xAA, file = 0x00
Wed May 18, 2022 10:01:05: Download completed but verification failed.