jlink6.8d下载STM32L431RCT6不拆除，导致下载后程序异常

Downloading file [XXXXXXXXXX]...
J-Link: Flash download: Bank 0 @ 0x08000000: 1 range affected (188416 bytes)
J-Link: Flash download: Total: 2.383s (Prepare: 0.172s, Compare: 0.025s, **Erase: 0.000s**, Program & Verify: 2.078s, Restore: 0.107s)
J-Link: Flash download: Program & Verify speed: 88 KiB/s
O.K.
Reset delay: 0 ms
Reset type NORMAL: Resets core & peripherals via SYSRESETREQ & VECTRESET bit.
Reset: Halt core after reset via DEMCR.VC_CORERESET.
Reset: Reset device via AIRCR.SYSRESETREQ.
Script processing completed.
执行完毕, 耗时：7114ms.