@krystian-hebel please also have a look at memtest commits. I am pretty sure we do use master commit, which is variable. We should use stable commit, but be aware of setting correct SHA to include Your recent patches for apu1 and apu2/3/4/5. This is also needed for reproducible build. iPXE is also built from master, not stable 2017.3 as defined in Kconfig. As You already work on it, please check it

@krystian-hebel have You looked at memtest and iPXE revisions as I mentioned above?

@miczyg1 I did. iPXE can be easily set, but as for memtest I can't set proper SHA as it isn't merged yet, it can be fetch-ed, but not checkout-ed, unless I'm missing something.