This is quite an advanced question, so I’m not expecting an answer but thought it was worth asking just in case.
I swapped the LPDDR modules on a switch board as the ones on it previously were not testing fine in circuit, repair went well and i have no issues booting HOS if going through Hekate, but when using stock bootloader it won’t boot.
Checking the HW & Fuses section in hekate and it will display Hynix memory on the left but samsung ID on the right.
The Ram was originally Hynix brand and the replacement was Samsung from a donor. I don’t recall ever having issues swapping the ram on other boards in the past but then again, i don’t ever think i changed the vendor from one to another and always kept them the same as original.
The assumption is the info displayed in HW & fuses relating to memory - on the left in Hekate is stored on EMMC and the info on the right is info taken from the chips hardware register/s and when attempting to boot with stock bootloader it’s hanging up due to the mismatch.
So i suppose my question is, has anyone ever successfully swapped the ram from one vendor to another? or does anyone know at which offset the the vendor info is stored for memory on the EMMC so i might edit it to properly reflect the change in hardware.
Alternatively, if anyone has a donor board with SKHynix memory installed and would be kind enough to send the IC’s my way it would be appreciated, in return you welcome to also send through a challenge board that your perhaps struggling to diagnose/repair or it you want me to reball any IC’s etc I’d be happy to do so 
I was just gonna buy the SKHynix memory online, but can only seem to find the IC from china but it’s > $20 per chip and it simply outweighs the value of the board. I don’t have a single board which uses SKHynix so can’t even pull it from a working or donor unit even just to test, it would seem they’re far less common than the Samsung IC’s.