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在 中_hide，我无法撤消启动系统软件：

[-LW-A]undo startup system-software
                         ^
Error:Unrecognized command found at '^' position.

版本是这样的：

[-LW-A]dis version
Huawei Versatile Routing Platform Software
VRP (R) Software, Version 5.30 (S2300 V100R003C00SPC301)
Copyright (C) 2008-2009 Huawei Technologies Co., Ltd.
Quidway S2352P-EI uptime is 513 days, 15 hours, 33 minutes

[Unit 0] EMFEA uptime is 513 days, 15 hours, 33 minutes
128M bytes DDR Memory
16M bytes FLASH
Pcb      Version : CX22EMFEA REV B
Basic  BOOTROM  Version :  209 Compiled at Nov  4 2009, 14:50:43
Software Version : VRP (R) Software, Version 5.30 (S2300 V100R003C00SPC301)