Stopping update in ACS 5.1

Hello
I tried to update my ACS 5.1 appliance. I applied patch 5.1.0.44.3 and made an big mistake: I booted the server due to the fact that it was not reachable after one hour after appplying the patch. Now the server shows following message, when I try to apply other patches:
Can not process requested software update operation since this ACS Instance currently has a software update inprogress.
My question: Is it possible to stop the upfate process and apply the other updates or is it possible to revert this update to go back to the previous patch level. For information: the appliance shows only the patches 5.1.0.44.1 and 5.1.44.0.2 installed.
With kind regards
Stefan

I found the button very deeply hidden under "System Administration >... > Operations >Distributed System Management >Edit:" pressed it and stopped the update process. I started a new update process which succeeded. Thanks for your hint updating via command line. I will do this with the next updates.
With kind regards
Stefan

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[ 1137.092006] cfg80211: Calling CRDA to update world regulatory domain
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[ 1137.392234] Freezing remaining freezable tasks ... (elapsed 0.001 seconds) done.
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[ 1137.393499] Suspending console(s) (use no_console_suspend to debug)
[ 1137.394631] sd 0:0:0:0: [sda] Synchronizing SCSI cache
[ 1137.394711] sd 0:0:0:0: [sda] Stopping disk
[ 1137.557027] e1000e: EEE TX LPI TIMER: 00000011
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[ 1137.824416] ehci-pci 0000:00:1d.0: System wakeup enabled by ACPI
[ 1137.824592] ehci-pci 0000:00:1a.0: System wakeup enabled by ACPI
[ 1137.824603] e1000e 0000:00:19.0: System wakeup enabled by ACPI
[ 1137.824680] xhci_hcd 0000:00:14.0: System wakeup enabled by ACPI
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[ 1137.837000] ACPI: Preparing to enter system sleep state S3
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[ 1137.853505] Disabling non-boot CPUs ...
[ 1137.853535] intel_pstate CPU 1 exiting
[ 1137.854780] kvm: disabling virtualization on CPU1
[ 1137.854790] smpboot: CPU 1 is now offline
[ 1137.855147] intel_pstate CPU 2 exiting
[ 1137.856377] kvm: disabling virtualization on CPU2
[ 1137.856383] smpboot: CPU 2 is now offline
[ 1137.856949] intel_pstate CPU 3 exiting
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[ 1137.861272] x86: Booting SMP configuration:
[ 1137.861273] smpboot: Booting Node 0 Processor 1 APIC 0x1
[ 1137.873339] kvm: enabling virtualization on CPU1
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[ 1137.875970] smpboot: Booting Node 0 Processor 2 APIC 0x2
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[ 1137.890527] smpboot: Booting Node 0 Processor 3 APIC 0x3
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[ 1138.675825] xhci_hcd 0000:00:14.0: System wakeup disabled by ACPI
[ 1138.675838] ehci-pci 0000:00:1d.0: System wakeup disabled by ACPI
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[ 1138.722883] PM: early resume of devices complete after 0.648 msecs
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[ 1138.723478] e1000e 0000:00:19.0: System wakeup disabled by ACPI
[ 1138.726178] snd_hda_intel 0000:00:1b.0: irq 33 for MSI/MSI-X
[ 1138.731841] sd 0:0:0:0: [sda] Starting disk
[ 1138.841851] e1000e 0000:00:19.0: irq 34 for MSI/MSI-X
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[ 1139.841800] usb 3-2.6: hub failed to enable device, error -22
[ 1140.098137] usb 3-2.6: reset low-speed USB device number 3 using xhci_hcd
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[ 1140.101400] tpm_tis 00:01: TPM is disabled/deactivated (0x7)
[ 1140.101410] rtc_cmos 00:03: System wakeup disabled by ACPI
[ 1140.354747] usb 3-2.6: reset low-speed USB device number 3 using xhci_hcd
[ 1140.370114] xhci_hcd 0000:00:14.0: xHCI xhci_drop_endpoint called with disabled ep ffff8800b3b73180
[ 1140.370126] usb 3-2.6: ep 0x81 - rounding interval to 64 microframes, ep desc says 80 microframes
[ 1140.380774] PM: resume of devices complete after 1658.753 msecs
[ 1140.381265] PM: Finishing wakeup.
[ 1140.381268] Restarting tasks ...
[ 1140.381412] acpi PNP0501:00: Still not present
[ 1140.382480] usb 2-1.6: USB disconnect, device number 3
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[ 1140.421569] pci_bus 0000:01: Allocating resources
[ 1140.421585] pcieport 0000:00:1c.0: bridge window [io 0x1000-0x0fff] to [bus 01] add_size 1000
[ 1140.421589] pcieport 0000:00:1c.0: bridge window [mem 0x00100000-0x000fffff 64bit pref] to [bus 01] add_size 200000
[ 1140.421599] pci_bus 0000:02: Allocating resources
[ 1140.421622] pcieport 0000:00:1c.2: bridge window [io 0x1000-0x0fff] to [bus 02] add_size 1000
[ 1140.421624] pcieport 0000:00:1c.2: bridge window [mem 0x00100000-0x000fffff 64bit pref] to [bus 02] add_size 200000
[ 1140.421632] pci_bus 0000:03: Allocating resources
[ 1140.421658] pcieport 0000:00:1c.3: bridge window [io 0x1000-0x0fff] to [bus 03] add_size 1000
[ 1140.421660] pcieport 0000:00:1c.3: bridge window [mem 0x00100000-0x000fffff 64bit pref] to [bus 03] add_size 200000
[ 1140.421663] i915 0000:00:02.0: BAR 6: [??? 0x00000000 flags 0x2] has bogus alignment
[ 1140.421668] pcieport 0000:00:1c.0: res[15]=[mem 0x00100000-0x000fffff 64bit pref] get_res_add_size add_size 200000
[ 1140.421670] pcieport 0000:00:1c.2: res[15]=[mem 0x00100000-0x000fffff 64bit pref] get_res_add_size add_size 200000
[ 1140.421672] pcieport 0000:00:1c.3: res[15]=[mem 0x00100000-0x000fffff 64bit pref] get_res_add_size add_size 200000
[ 1140.421674] pcieport 0000:00:1c.0: res[13]=[io 0x1000-0x0fff] get_res_add_size add_size 1000
[ 1140.421676] pcieport 0000:00:1c.2: res[13]=[io 0x1000-0x0fff] get_res_add_size add_size 1000
[ 1140.421677] pcieport 0000:00:1c.3: res[13]=[io 0x1000-0x0fff] get_res_add_size add_size 1000
[ 1140.421687] pcieport 0000:00:1c.0: BAR 15: assigned [mem 0xbf200000-0xbf3fffff 64bit pref]
[ 1140.421697] pcieport 0000:00:1c.2: BAR 15: assigned [mem 0xbf400000-0xbf5fffff 64bit pref]
[ 1140.421702] pcieport 0000:00:1c.3: BAR 15: assigned [mem 0xbf600000-0xbf7fffff 64bit pref]
[ 1140.421707] pcieport 0000:00:1c.0: BAR 13: assigned [io 0x3000-0x3fff]
[ 1140.421710] pcieport 0000:00:1c.2: BAR 13: assigned [io 0x4000-0x4fff]
[ 1140.421713] pcieport 0000:00:1c.3: BAR 13: assigned [io 0x5000-0x5fff]
[ 1140.421980] i915 0000:00:02.0: BAR 6: [??? 0x00000000 flags 0x2] has bogus alignment
[ 1140.422076] i915 0000:00:02.0: BAR 6: [??? 0x00000000 flags 0x2] has bogus alignment
[ 1140.549726] e1000e: enp0s25 NIC Link is Down
[ 1140.550076] IPv6: ADDRCONF(NETDEV_UP): enp0s25: link is not ready
[ 1140.577868] usb 2-1.6: new full-speed USB device number 4 using ehci-pci
[ 1140.662671] usb 2-1.6: string descriptor 0 read error: -22
[ 1140.684516] e1000e 0000:00:19.0: irq 34 for MSI/MSI-X
[ 1140.771126] usb 2-1.8: new full-speed USB device number 5 using ehci-pci
[ 1140.784983] usb 2-1.6: USB disconnect, device number 4
[ 1140.787680] e1000e 0000:00:19.0: irq 34 for MSI/MSI-X
[ 1140.971041] usb 2-1.6: new full-speed USB device number 6 using ehci-pci
[ 1141.055968] usb 2-1.6: string descriptor 0 read error: -22
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[ 1144.455094] wlo1: send auth to 00:1f:9f:e7:22:53 (try 1/3)
[ 1144.457056] wlo1: authenticated
[ 1144.459038] wlo1: associate with 00:1f:9f:e7:22:53 (try 1/3)
[ 1144.463874] wlo1: RX AssocResp from 00:1f:9f:e7:22:53 (capab=0x411 status=0 aid=1)
[ 1144.463995] wlo1: associated
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