While the Downloads tab of "Embedded Linux for i.MX Applications Processors" seems to cope with size units correctly (resp. just lists content in KB even if multiple GB in size), the "My Updates" page wrongly claims MB while it would be GB.
Well, instead of "My NXP" it just shows "ERROR: Please contact support.". Looks like you guys messed with some session cookie stuff yet again. Clearing browser cache recovered it. Thanks!