Updating Sprint htc one m8 (harman/kardon + non - harman kardon) to marshamallow 6.0

here keeping it real simple

(precaution - U need to be S-OFF in order to flash in this process)

first flash this files using ADB and fastboot (it's a firmware which requires custom recovery like twrp)

http://ift.tt/1SAxRvu

steps -

-rename firmware to firmware.zip
-copy firmware.zip to your sdk folder
-boot into bootloader
-plug in usb
-select fastboot option (screen should say fastboot usb)
-type fastboot oem rebootRUU
-when u see the black screen w/ HTC, type fastboot flash zip firmware.zip
-when it's done, type fastboot reboot



then U need to download this zip file (marshmallow sprint Harman kardon)

http://ift.tt/1r4LxUW

then follow this steps -
1. Rename the downloaded zip file to 0P6BIMG,
boot into bootloader,
enter HBOOT
when it asks for updating press (volume +) key ,that means yes
the update will start
sit back and relax
wait for some time
enjoy

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