[Update] After Sony updated its warranty terms, Nintendo has followed suit and has updated its terms. We've included Nintendo's original and updated terms below:

　　Original:  "This warranty shall not apply if this product: (a) is used with products not sold or licensed by Nintendo (Including but not limited to, non-licensed game enhancement and copier devices, adapters, software, and power supplies."  

　　Updated:  "This warranty shall not apply if this product has been damaged by products not sold or licensed by Nintendo (Including, but not limited to, adapters, software, and power supplies)."

　　[Original story] Sony has updated its warranty terms for PlayStation systems sold in the US and Canada, and it seems that PlayStation 4 owners are now allowed to open up their console while still retaining warranty.

　　As covered last week, the Federal Trade Commission (FTC) gave Sony, Microsoft, and Nintendo 30 days to ditch repair-deterring warranty stickers on their consoles.

　　“This letter places you on notice that violations of the Warranty and FTC Acts may result in legal action”, the FTC wrote. “FTC investigators have copied and preserved the online pages in question, and we plan to review your company’s written warranty and promotional materials after 30 days.”

　　It seems that Sony Interactive Entertainment has heeded this warning, and has now made subtle changes to its warranties for PlayStation 4, PlayStation VR, PlayStation 3, and PlayStation Vita systems sold in both the United States and Canada.

　　The warranty seal on the PlayStation 4 - this needs to be damaged/removed in order to reach the screwsTwo changes have been implemented, including a change to the use of peripherals not supplied or licensed by Sony, and the voiding of the warranty seal.

　　Our previous warranties stated that the warranty does not apply if the product is used with a peripheral that is not supplied or licensed by SIE. Our updated warranties state that the warranty does not apply “to damage caused by” use of the product with an unlicensed peripheral.

　　Our previous warranties stated that the warranty does not apply if the warranty seal on the product has been altered or removed. Our updated warranty states that the warranty does not apply “to damage caused by” opening the product or to damage caused by service performed by someone other than a representative of SIE or an SIE-authorized service provider.

　　The new limited warranty terms now allow PS4 (and PSVR, PS3 and PS Vita) owners to void the seal and open up their systems while still retaining Sony’s warranty, although the warranty does not apply when the system is damaged due to opening it. A subtle change, but still an important one as it appears that Sony will now have to prove that a system was actually damaged due to opening it instead of merely saying the warranty doesn't apply as the seal was voided.