Ptbr Jan | Windows 7 Sp1 Dualboot 31in1 Oem Esd

: Electronic Software Delivery, which is a method of delivering software electronically, often used by Microsoft for digital distribution of Windows and other products. ESD versions are typically used for digital distribution and do not come in a physical box.

These later versions use unofficial update packs (notably by simplix). These packs backport: windows 7 sp1 dualboot 31in1 oem esd ptbr jan