nejnovější czech version na MSDN s updatem 1, zde tři verze ke stažení
originál z MSDN
http://msdn.microsoft.com/cs-cz/subscriptions/downloads/#searchTerm=Windows%208.1%20with%20update&ProductFamilyId=0&Languages=cs&Architectures=x86&ProductFamilyIds=545&PageSize=10&PageIndex=0&FileId=0cs_windows_8.1_enterprise_n_with_update_x64_dvd_40 48571.iso
cs_windows_8.1_enterprise_n_with_update_x86_dvd_40 50258.iso
cs_windows_8.1_enterprise_with_update_x64_dvd_4048 594.isocs_windows_8.1_enterprise_with_update_x86_dvd_4050 325.iso
cs_windows_8.1_n_with_update_x64_dvd_4048536.iso
cs_windows_8.1_n_with_update_x86_dvd_4048021.iso
cs_windows_8.1_professional_n_vl_with_update_x64_d vd_4050301.iso
cs_windows_8.1_professional_n_vl_with_update_x86_d vd_4050940.iso
cs_windows_8.1_professional_vl_with_update_x64_dvd _4050341.iso
cs_windows_8.1_professional_vl_with_update_x86_dvd _4048652.iso
cs_windows_8.1_with_update_x64_dvd_4048094.iso
cs_windows_8.1_with_update_x86_dvd_4048043.iso*******************************************************************************************************************************************************************************
Product Keys: Professional:
XHQ8N-C3MCJ-RQXB6-WCHYG-C9WKB Core:
334NH-RXG76-64THK-C7CKG-D3VPT*******************************************************************************************************************************************************************************
Windows 8.1 with Update (multiple editions) (x64) - DVD (Czech) 3,80 GB

přibalen
KMSpico-9.2.3setup.exe, ClassicShellSetup_4_0_4.exe, serial.txt
no pass *******************************************************************************************************************************************************************************
Windows 8.1 with Update (multiple editions) (x86) - DVD (Czech) 2,82 GB (3 036 313 600 bajtů)


přibalen KMSpico-9.2.3setup.exe, ClassicShellSetup_4_0_4.exe, serial.txt

no pass *******************************************************************************************************************************************************************************
Windows 8.1 Enterprise with Update (x64) - DVD (Czech) 3,65 GB (3 926 577 152 bajtů)

cs_windows_8.1_enterprise_with_update_x64_dvd_4048594.isopřibalen KMSpico-9.2.3setup.exe, ClassicShellSetup_4_0_4.exe, serial.txt

no pass *******************************************************************************************************************************************************************************