Some facts to note for HP Gen7(N54L) and Gen8 owners updating 6.2.3 as of now:
Have to stick to Jun’s loader 1.03 DS3615/17 image . There is no second thoughts about it. The CPU’s are too old to accept loader 1.4 Period.
If you are updating from baremetal 6.1.7 (stock H/W with native drivers) then simply update to loader 1.03
If updating from 6.2.2 with intel NIC (without extra lzma) – burn a new USB with loader 1.03 – after update will have the option to use the onboard NIC if needed. (disable/remove the unused NICs)
If updating from 6.2.2 with onboard NIC (with extra lzma) – burn a new USB with loader 1.03 without the need of any extra.lzma. the native lzma in the loader is good enough.
Would recommend to do a trial first with burning a fresh loader on a separate USB then disconnect all your production HDDs, add a blank disk any size or shape and go through a fresh install your existing DSM version then update to desired ver. A complete full cycle test 😉