> The culprit? They downloaded the OS image using FTP and forgot to set binary mode. Various other network kit vendors I recall would do some level of validatio

> The culprit? They downloaded the OS image using FTP and forgot to set binary mode. Various other network kit vendors I recall would do some level of validation (and anyone downloading should be checking the hash). RCA sent to customers was vague and just said it was a corrupted image / failed upgrades. I've always been paranoid about this sort of thing when applying BIOS or firmware updates, despite those almost always having checksum validation, but I guess my caution is not unwarranted.