С дуру пролил в K750 вот это DB2010_BRO_29_EROM.bip
Ну а дальше:

McuId: 80400301FFFFFF, CID: 29, 98 (Brown)
Mcert: A1_SEMC
Baud Rate: 921600
Trying: CXC1326738_000000_0002_R2AB{0102030401}.bin
PayLoader Certificate Rejected :00 46 32 A9 DA
Trying: CXC1326738_041214_0816_R2U{0101030402}.bin
PayLoader Certificate Rejected :00 46 32 A9 DA
Trying: CXC1326738_050207_0954_R2X{0101030402}.bin
PayLoader Certificate Rejected :00 46 32 A9 DA
Trying: CXC1326738_041214_0816_R2AA{0101030402}.bin
PayLoader Certificate Rejected :00 46 32 A9 DA
Not Found Required Loader
Trying: CXC1326739_R2K{0101030301}.bin
Payloader Certificate Rejected
Payloader Certificate Rejected
Not Found Required Loader
Security Initialization Failed, Time: 0:03

Походу без TP никак