stm32 error A9555E

error A9555E 발생 원인:
“Error code "-25"indicates to that License server system does not support this version of the product. This usually means that you are trying to use an older license with a more recent tool. ”
당신의 해독 허가증은 당신의 MDK 버전을 지원하지 않는다는 뜻입니다. 일반적으로 허가증의 버전이 너무 뒤떨어져 새 버전과 일치하지 않는 도구를 의미합니다.
솔루션:
1. 해독하는 과정에서 문제가 생길 수 있으므로 도저히 안되면 MDK를 다시 해독하거나 다시 조립할 수 있습니다.
2. Flex 라이센스 서버 관리자에게 연락하여 Flex 라이센스를 업데이트하거나
3. 라이센스에 맞게 MDK 버전을 낮출 수도 있습니다.
구체적인 라이센스 일치 버전 보기 방법은 참조할 수 있습니다
옮겨 싣다http://www.keil.com/support/docs/3699.htm
Run lmutil.exe utility tool in your cmd.exe window as follows:
C:\keil_v5\UV4\FlexNet\lmutil.exe lmstat -c [email protected] -a -i
Please note that "[email protected]"should be replaced by the port@server_name of your Flex license server.
After such a command is executed, you will see the output similar as follows:

lmutil - Copyright (c) 1989-2014 Flexera Software LLC. All Rights Reserved.
Flexible License Manager status on Tue 4/28/2015 15:30

[Detecting lmgrd processes...]
License server status: [email protected]
    License file(s) on Flex-LIC-Server.Company.COM: C:\Flex-Server\license.dat:

  Flex-LIC-Server.Company.COM: license server UP (MASTER) v11.12.1

Vendor daemon status (on Flex-LIC-Server.Company.COM):

    armlmd: UP v11.12.1

Feature usage info:
Users of mdk_pro:          (Total of 1 license issued;  Total of 0 licenses in use)
Users of mdk_pro_µVision:  (Total of 1 license issued;  Total of 0 licenses in use)
Users of mdk_pro_armasm5:  (Total of 1 license issued;  Total of 0 licenses in use)
Users of mdk_pro_compiler5:(Total of 1 license issued;  Total of 0 licenses in use)
Users of mdk_pro_armlink5: (Total of 1 license issued;  Total of 0 licenses in use)
Users of mdk_pro_fromelf5: (Total of 1 license issued;  Total of 0 licenses in use)
Users of mdk_pro_arm_lcf5: (Total of 1 license issued;  Total of 0 licenses in use)

NOTE: lmstat -i does not give information from the server,
      but only reads the license file.  For this reason,
      lmstat -a is recommended instead.

Feature                         Version     #licenses    Expires      Vendor
_______                         _________   _________    __________   ______
mdk_pro                         5.0          1           1-jan-0      armlmd
mdk_pro                         5.0201408    1           1-jan-0      armlmd
mdk_pro_µVision                 5.0          1           1-jan-0      armlmd
mdk_pro_µVision                 5.0201408    1           1-jan-0      armlmd
mdk_pro_armasm5                 5.0          1           1-jan-0      armlmd
mdk_pro_armasm5                 5.0201408    1           1-jan-0      armlmd
mdk_pro_compiler5               5.0          1           1-jan-0      armlmd
mdk_pro_compiler5               5.0201408    1           1-jan-0      armlmd
mdk_pro_armlink5                5.0          1           1-jan-0      armlmd
mdk_pro_armlink5                5.0201408    1           1-jan-0      armlmd
mdk_pro_fromelf5                5.0          1           1-jan-0      armlmd
mdk_pro_fromelf5                5.0201408    1           1-jan-0      armlmd
mdk_pro_arm_lcf5                5.0          1           1-jan-0      armlmd
mdk_pro_arm_lcf5                5.0201408    1           1-jan-0      armlmd

From such an output you can see the version number 5.0201408 supported by the license on the Flex license server, which means this Flex license only support the products with the valid support date up to the end of August 2014 (201408 means 2014/08). However, your product requires a valid support and maintenance up to at least the end of November 2014 as given above.