Can I follow this guide to go back to stock?

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http://forum.xda-developers.com – I need to go back to stock for a repair, Can I follow this guide ---> http://forum.xda-developers.com/show....php?t=1859714 and just use the 2.17 stock recovery and this RUU ---> http://forum.xda-developers.com/show....php?t=1644338 When I run fastboot getvar all I get this : (bootloader) version: 0.5 (bootloader) version-bootloader: 1.09.0000 (bootloader) version-baseband: (bootloader) version-cpld: None (bootloader) version-microp: None (bootloader) version-main: 1.73.502.1 Thanks for the help (HowTos)