Downgrade Lumia 900 DLOAD to Qualcomm??


Currently, i have Lumia 900 phones with dload BL, but the marketplace apps are very few. So i want to flash custom rom for installing XAP files. Is there any way to change the dload bootloader to Qualcomm without disassembling the phone? My friend have atf box, can he help me flash phone? Because i don't need to disassemble. Sorry for poor English and thank you for help. How can i flash custom rom without disassembling the phone? Have only an ATF box.
Lumia 900 boot-loader can only be changed via Test Points = disassemble.
No other way for now.
Thanks, but why in Vietnam forum no one told about test points? They already flashed custom rom to lumia 900 only with ATF, without testpoints.
They might not have mentioned this to you, but I confirm that it is
via Test Points.

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