nrf51822 nrfjprog.exe ERROR: Invalid serial number!

遇到问题：
Hi，I use nRFgo Studio to erase nRF51822, like this

but it display: ERROR: Invalid serial number!

Is this a J-link? I’ve never seen a J-Link with a 10 digit serial number, but maybe I’m wrong. Try to open J-Link configurator and see if every thing looks OK: www.segger.com/configurator.html. Maybe it’s not a genuine one.
Yes, it’s a J-link. Everything is ok after I changed the J-link S/N with a 9 digit number. Thanks for your answer.
I’m glad it worked out for you. Please accept my answer if it is correct.

来自：https://devzone.nordicsemi.com/f/nordic-q-a/11326/nrfjprog-exe-error-invalid-serial-number

具体解决方法：
安装 Setup_V512e.exe 或者类似软件：

在开始菜单：

将10位的数字 修改为9位的数字 SN ***

修改完之后，需要重新插拔，重新上电 一下 j-link

https://blog.****.net/tcm455090672/article/details/79856973

打开J-Link commander，如下图：

J-Link commander界面如下：

输入：exec setsn=xxxxxxxx