S7503E-M从R738F05及以上S7500EA-版本可以直接升级到

R7524版本太老了要升级到R7643P05或近些的版本，但一直升级不了，加载镜像文件失败，经查资料，“752PO1版本开始S750EA-版本和S7500E-版本台 新的S7500E-版本支持S7603E-M加款启动: S7503E-M从R738F05及以上S7500EA-版本可以直接升级到7552PO1.及以上S7500E-版本,R7536PO5以下S7500EA~版本必须先手动升级主控B00TROM到07及以上版本方可以升级到7552PO1及以上S7500E-版本。”，H3C官网上软件版本怎样查看哪些软件版本主控BOOTROM的版本在107及以上的软件版本，以及如何先升级主控BOOTROM版本到107或以上，再升级设备软件版本，请给出具体的操作配置及操作步骤

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