Warning: This guide requires unlocking the bootloader, which will void your warranty.
Confirmed working for T-Mobile/MetroPCS. I welcome other XT1548 users to try this process for themselves.
1) Unlock the bootloader, install a recovery, and root the device. Follow instructions in this forum already as other people have made much higher quality guides than I could make.
2) Perform the tutorial located here to flash XT1540 modem and associated files: http://ift.tt/2ci5jXt
3) Flash the latest version of CM13: http://ift.tt/1oayUWK
4) Install GApps/all other necessary apps for CM13
5) Dial *#*#4636#*#* to switch to LTE/GSM (auto) mode
6) Enter the correct APN for your carrier
7) Enjoy your GSM unlocked device!
Few remarks: it may not be needed to flash the XT1540 files. It seems like the block is only on US Cellular's software. But I'm leaving the step added in as it is what worked for me. Any suggestions for polishing the tutorial would be appreciated.
A few photos: (note that this was done on an active SIM, but without paid for service. 611 works correctly, as does the T-Mobile/MetroPCS portal).
Confirmed working for T-Mobile/MetroPCS. I welcome other XT1548 users to try this process for themselves.
1) Unlock the bootloader, install a recovery, and root the device. Follow instructions in this forum already as other people have made much higher quality guides than I could make.
2) Perform the tutorial located here to flash XT1540 modem and associated files: http://ift.tt/2ci5jXt
3) Flash the latest version of CM13: http://ift.tt/1oayUWK
4) Install GApps/all other necessary apps for CM13
5) Dial *#*#4636#*#* to switch to LTE/GSM (auto) mode
6) Enter the correct APN for your carrier
7) Enjoy your GSM unlocked device!
Few remarks: it may not be needed to flash the XT1540 files. It seems like the block is only on US Cellular's software. But I'm leaving the step added in as it is what worked for me. Any suggestions for polishing the tutorial would be appreciated.
A few photos: (note that this was done on an active SIM, but without paid for service. 611 works correctly, as does the T-Mobile/MetroPCS portal).
from xda-developers http://ift.tt/2bXlYkJ
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