Dell Technical Updates - Vostro 3400"  for SSSTC CA6 PCIe NVMe Solid State Drive Firmware Update

On 01 Mar 2022, I received email from Dell Notifications <no-reply@notifications.dell.com> with subject "Dell Technical Updates - Vostro 3400"  for SSSTC CA6 PCIe NVMe Solid State Drive Firmware Update. I downloaded the package & followed instructions but installation FAILED repeatedly with attached error message popping up. Would much appreciate if Dell tech experts or experienced tech community member/s can advise next step. On another note, it is so tedious & difficult & laborious & exhausting to get in touch with Dell experts.