Originally Posted by tyapeter
What did you mean with don't flash with those files? Is that means unzip the image files and take out those files and zip again?
Which images is the best one for downgrade, from the sbf Blur_Version.161.44.25.ghost_row.Retail.en.US.zip or TMO_RETAIL_XT1053_4.4-13.11.1Q2.X-69-3_MR2_1FF.xml.zip
And also what you mean with "This doesn't means that you won't brick with other version"? Is that mean that not guarantee that downgrade won't have brick on the devices?
Please advice thanks
If you haven't already unlock the bootloader, then you should just send the phone back. Once you unlock the bootloader the warranty is voided and you'll be stuck with that phone. If you still intend on flashing:
You flash them using mfastboot while in flash mode, do not flash motoboot or gpt, also don't run "fastboot getvar". Manually perform these commands:
mfastboot flash logo logo.bin
mfastboot flash boot boot.img
mfastboot flash recovery recovery.img
mfastboot flash system system.img
mfastboot flash modem NON-HLOS.bin
mfastboot erase modemst1
mfastboot erase modemst2
mfastboot flash fsg fsg.mbn
mfastboot erase cache
mfastboot erase customize
mfastboot erase clogo
After flashing T-Mo 4.4, you can receive OTA update to get back to 4.4.2.
As for downgrading to other versions, read this sticky before flashing anything: http://forum.xda-developers.com/show....php?t=2635366