若搭載 Integrated Dell Remote Access Controller 9 (iDRAC9) 的 Dell EMC PowerEdge 伺服器出貨時已安裝 iDRAC9 韌體版本 4.40.40.00 (或更新版本),則需要兩步驟的降級路徑,以安裝較舊版本的 iDRAC9 韌體。嘗試將 iDRAC9 韌體降級至 2021 年 2 月之前的韌體版本時,韌體更新將會失敗。生命週期記錄中會在 iDRAC 重新開機期間記錄到 RAC0181 資訊事件。
2021-07-29 13:04:38 65 SUP1901 Firmware update initializing.
2021-07-29 13:04:38 66 SUP1911 Firmware update initialization complete.
2021-07-29 13:04:38 67 SUP1904 Firmware update checksumming image.
2021-07-29 13:04:38 68 SUP1903 Firmware update verify image headers.
2021-07-29 13:04:49 69 SUP1905 Firmware update programming flash.
2021-07-29 13:05:23 70 SUP1906 Firmware update successful.
2021-07-29 13:08:20 72 RAC0182 The iDRAC firmware was rebooted with the following reason: user initiated.
2021-07-29 13:08:23 75 RAC0181 The iDRAC recovered from a firmware boot loader error with the following reason : Boot-time failover.
2021-07-30 03:36:12 315 SUP0517 Unable to update the Integrated Dell Remote Access Controller firmware to version 4.22.00.53 because the operation is not supported or the device is in a locked state.
此降級問題會在以下常見使用案例中發生: