During one of the recent upgrades in my VCF environment i accidentally upgraded the ESXi 7.x build number to a later build that was not in the validated design which caused all kinds of issues and errors in my sddc manager. In order to address this i wanted to see i could actually downgrade the packages to a lower build number. It goes without saying that this procedure should not be done in a production environment and you should contact VMware customer support for an supported downgrade method. We will be working in the ESXi cli on this guide
The following command brings all of the version currently available in the depot
esxcli software sources profile list -d https://hostupdate.vmware.com/software/VUM/PRODUCTION/main/vmw-depot-index.xml
I was specifically looking for build 18426014 so i leveraged grep to get the proper version
esxcli software sources profile list -d https://hostupdate.vmware.com/software/VUM/PRODUCTION/main/vmw-depot-index.xml | grep 18426014
The command above returned 2 versions for me. One with VMware tools and one without
ESXi-7.0U2c-18426014-standard VMware, Inc. PartnerSupported 2021-08-24T00:00:00 2021-08-24T00:00:00
ESXi-7.0U2c-18426014-no-tools VMware, Inc. PartnerSupported 2021-08-24T00:00:00 2021-08-04T11:40:25
We are specifically interested in the first part of each line
ESXi-7.0U2c-18426014-standard and ESXi-7.0U2c-18426014-no-tools
First i tried to install it using
esxcli software profile update -p ESXi-7.0U2c-18426014-standard -d https://hostupdate.vmware.com/software/VUM/PRODUCTION/main/vmw-depot-index.xml
However that only works if were actually upgrading to a later build. In order to downgrade i found an option –allow-downgrades that allows us to install a lower build. In the end i ended up with
esxcli software profile update -p ESXi-7.0U2c-18426014-standard -d https://hostupdate.vmware.com/software/VUM/PRODUCTION/main/vmw-depot-index.xml --allow-downgrades
This actually installed the lower versions of the packages associated with that build number and removed the later packages. The output in my case was
Update Result
Message: The update completed successfully, but the system needs to be rebooted for the changes to be effective.
Reboot Required: true
VIBs Installed: VMware_bootbank_clusterstore_7.0.2-0.20.18426014, VMware_bootbank_cpu-microcode_7.0.2-0.20.18426014, VMware_bootbank_crx_7.0.2-0.20.18426014, VMware_bootbank_esx-base_7.0.2-0.20.18426014, VMware_bootbank_esx-dvfilter-generic-fastpath_7.0.2-0.20.18426014, VMware_bootbank_esx-update_7.0.2-0.20.18426014, VMware_bootbank_esx-xserver_7.0.2-0.20.18426014, VMware_bootbank_gc_7.0.2-0.20.18426014, VMware_bootbank_loadesx_7.0.2-0.20.18426014, VMware_bootbank_native-misc-drivers_7.0.2-0.20.18426014, VMware_bootbank_vdfs_7.0.2-0.20.18426014, VMware_bootbank_vsan_7.0.2-0.20.18426014, VMware_bootbank_vsanhealth_7.0.2-0.20.18426014
VIBs Removed: VMware_bootbank_clusterstore_7.0.2-0.25.18538813, VMware_bootbank_cpu-microcode_7.0.2-0.25.18538813, VMware_bootbank_crx_7.0.2-0.25.18538813, VMware_bootbank_esx-base_7.0.2-0.25.18538813, VMware_bootbank_esx-dvfilter-generic-fastpath_7.0.2-0.25.18538813, VMware_bootbank_esx-update_7.0.2-0.25.18538813, VMware_bootbank_esx-xserver_7.0.2-0.25.18538813, VMware_bootbank_gc_7.0.2-0.25.18538813, VMware_bootbank_loadesx_7.0.2-0.25.18538813, VMware_bootbank_native-misc-drivers_7.0.2-0.25.18538813, VMware_bootbank_vdfs_7.0.2-0.25.18538813, VMware_bootbank_vsan_7.0.2-0.25.18538813, VMware_bootbank_vsanhealth_7.0.2-0.25.18538813
VIBs Skipped: VMW_bootbank_atlantic_1.0.3.0-8vmw.702.0.0.17867351, VMW_bootbank_bnxtnet_216.0.50.0-34vmw.702.0.20.18426014, VMW_bootbank_bnxtroce_216.0.58.0-20vmw.702.0.20.18426014, VMW_bootbank_brcmfcoe_12.0.1500.1-2vmw.702.0.0.17867351, VMW_bootbank_brcmnvmefc_12.8.298.1-1vmw.702.0.0.17867351, VMW_bootbank_elxiscsi_12.0.1200.0-8vmw.702.0.0.17867351, VMW_bootbank_elxnet_12.0.1250.0-5vmw.702.0.0.17867351, VMW_bootbank_i40enu_1.8.1.137-1vmw.702.0.20.18426014, VMW_bootbank_iavmd_2.0.0.1152-1vmw.702.0.0.17867351, VMW_bootbank_icen_1.0.0.10-1vmw.702.0.0.17867351, VMW_bootbank_igbn_1.4.11.2-1vmw.702.0.0.17867351, VMW_bootbank_irdman_1.3.1.19-1vmw.702.0.0.17867351, VMW_bootbank_iser_1.1.0.1-1vmw.702.0.0.17867351, VMW_bootbank_ixgben_1.7.1.35-1vmw.702.0.0.17867351, VMW_bootbank_lpfc_12.8.298.3-2vmw.702.0.20.18426014, VMW_bootbank_lpnic_11.4.62.0-1vmw.702.0.0.17867351, VMW_bootbank_lsi-mr3_7.716.03.00-1vmw.702.0.0.17867351, VMW_bootbank_lsi-msgpt2_20.00.06.00-3vmw.702.0.0.17867351, VMW_bootbank_lsi-msgpt35_17.00.02.00-1vmw.702.0.0.17867351, VMW_bootbank_lsi-msgpt3_17.00.10.00-2vmw.702.0.0.17867351, VMW_bootbank_mtip32xx-native_3.9.8-1vmw.702.0.0.17867351, VMW_bootbank_ne1000_0.8.4-11vmw.702.0.0.17867351, VMW_bootbank_nenic_1.0.33.0-1vmw.702.0.0.17867351, VMW_bootbank_nfnic_4.0.0.63-1vmw.702.0.0.17867351, VMW_bootbank_nhpsa_70.0051.0.100-2vmw.702.0.0.17867351, VMW_bootbank_nmlx4-core_3.19.16.8-2vmw.702.0.0.17867351, VMW_bootbank_nmlx4-en_3.19.16.8-2vmw.702.0.0.17867351, VMW_bootbank_nmlx4-rdma_3.19.16.8-2vmw.702.0.0.17867351, VMW_bootbank_nmlx5-core_4.19.16.10-1vmw.702.0.0.17867351, VMW_bootbank_nmlx5-rdma_4.19.16.10-1vmw.702.0.0.17867351, VMW_bootbank_ntg3_4.1.5.0-0vmw.702.0.0.17867351, VMW_bootbank_nvme-pcie_1.2.3.11-1vmw.702.0.0.17867351, VMW_bootbank_nvmerdma_1.0.2.1-1vmw.702.0.0.17867351, VMW_bootbank_nvmxnet3-ens_2.0.0.22-1vmw.702.0.0.17867351, VMW_bootbank_nvmxnet3_2.0.0.30-1vmw.702.0.0.17867351, VMW_bootbank_pvscsi_0.1-2vmw.702.0.0.17867351, VMW_bootbank_qcnic_1.0.15.0-11vmw.702.0.0.17867351, VMW_bootbank_qedentv_3.40.5.53-20vmw.702.0.20.18426014, VMW_bootbank_qedrntv_3.40.5.53-17vmw.702.0.20.18426014, VMW_bootbank_qfle3_1.0.67.0-14vmw.702.0.0.17867351, VMW_bootbank_qfle3f_1.0.51.0-19vmw.702.0.0.17867351, VMW_bootbank_qfle3i_1.0.15.0-12vmw.702.0.0.17867351, VMW_bootbank_qflge_1.1.0.11-1vmw.702.0.0.17867351, VMW_bootbank_rste_2.0.2.0088-7vmw.702.0.0.17867351, VMW_bootbank_sfvmk_2.4.0.2010-4vmw.702.0.0.17867351, VMW_bootbank_smartpqi_70.4000.0.100-6vmw.702.0.0.17867351, VMW_bootbank_vmkata_0.1-1vmw.702.0.0.17867351, VMW_bootbank_vmkfcoe_1.0.0.2-1vmw.702.0.0.17867351, VMW_bootbank_vmkusb_0.1-4vmw.702.0.20.18426014, VMW_bootbank_vmw-ahci_2.0.9-1vmw.702.0.0.17867351, VMware_bootbank_elx-esx-libelxima.so_12.0.1200.0-4vmw.702.0.0.17867351, VMware_bootbank_esx-ui_1.34.8-17417756, VMware_bootbank_lsuv2-hpv2-hpsa-plugin_1.0.0-3vmw.702.0.0.17867351, VMware_bootbank_lsuv2-intelv2-nvme-vmd-plugin_2.0.0-2vmw.702.0.0.17867351, VMware_bootbank_lsuv2-lsiv2-drivers-plugin_1.0.0-5vmw.702.0.0.17867351, VMware_bootbank_lsuv2-nvme-pcie-plugin_1.0.0-1vmw.702.0.0.17867351, VMware_bootbank_lsuv2-oem-dell-plugin_1.0.0-1vmw.702.0.0.17867351, VMware_bootbank_lsuv2-oem-hp-plugin_1.0.0-1vmw.702.0.0.17867351, VMware_bootbank_lsuv2-oem-lenovo-plugin_1.0.0-1vmw.702.0.0.17867351, VMware_bootbank_lsuv2-smartpqiv2-plugin_1.0.0-6vmw.702.0.0.17867351, VMware_bootbank_qlnativefc_4.1.14.0-5vmw.702.0.0.17867351, VMware_bootbank_vmware-esx-esxcli-nvme-plugin_1.2.0.42-1vmw.702.0.0.17867351, VMware_locker_tools-light_11.2.6.17901274-18295176
And with that all i had to do was reboot the server and it came back at the version i needed.