[OnePlus 10 Pro] beatbreakee:
yah same here.... but on my 10t, it reset after 24 hrs just like normal. Its extremely weird how much alike and at the same time different these 2 phones are. I mean almost the exact same everything is on these 2 phones minus the curved screen, and hasselbad camera.

im still having trouble with a consistent way to bring back full fastboot functionality to the phone. It sucks but the whole purpose for unlocking engineering mode for me was to unlock fastboot.... on other models of oppo phones released in this generation (2022) there was a direct option under engineering mode to turn fastboot back on... and i KNOW it exists in the 10T as well.... I mean why would OPPO have created a function inside engineering mode to enable fastboot on EVERY device except the 10T.

And from my understanding, after speaking to a Qualcomm rep, there is no way to even build a full android firmware without having the fastboot protocol included in the build. He stated that FASTBOOT-HAL is a required portion of the devices OS, and that if there is "FastbootD" then that is direct evidence that "Fastboot" is still a part of the system. He said that the manufacturer has simply changed the "Hardware button combination, to something that is either multiple button, or button sequence activated, (ie hold Power & Vol -, then tap vol + or release power and press it again... etc) but he said there could be endless numbers of procedures that they could alter in the kernel..." but the main idea is that 1.> FastbootD means FASTBOOT is fully functional and present in the phone.... and 2.> No manufacturer can build a version of android, and release it without fastboot being built into the os, period... so now Im in need of some super knowledgeable souls who are Android Experts, that can help me find out what T-mobile has tasked Oppo to do that has disabled fastboot access through normal means...

ALSO.... I will express that the Qualcomm Tech specifically stated, "While I am not at liberty of disclosing any details on this subject... i will state that NOT EVERY USSD CODE, ACCESSES THE SAME FEATURES OF ENGINEERING MODE...AND WHILE SOME CODES WILL OPEN ACCESS TO SOME FUNCTIONS.. OTHER CODES WILL ACCESS MORE OR LESS OPTIONS THAN THE OTHER!" .... This tells me that there is ANOTHER deeper level of engineering mode that is not commonly known, and that might be where the toggle to enable fastboot actually sits. He said that the

"In Depth Testing" app used by OPPO for the Realme phones is just another remote version of the Secrecy Unlock app, which unlocks the engineering function of the phone, and the app just blocks out everything but fastboot. The app sends a request to Oppo with the 10 minute unlock stamp, and then oppo remotely transmits the code back to the phone, sends it to the request screen, then activates engineering mode, and finally goes straight to the Fastboot button.... and when you press it, it starts the 10 minutes timer... then after you unlock your bootloader, it locks engineering mode again. So if you guys are able to decrypt the engineering mode through this secrecy app, then you just need the right dialer combination to access the menu that has Fastboot as an option"

Any chance anyone here knows how to parse ALL of the dialer codes that are available for a certain Kernel? If i can do that, i can do ALOT.

With a locked bootloader on my oneplus 10T, i cannot fully reach all of the files in the EFS partition on my phone, and I have some research that has a pretty good chance of pulling the "signature authentication" that the MSM Tool uses to handle the second stage verification from. If i can get my phone to reach fastboot so i can unlock the bootloader, then unlock the critical partitions, i can pull the files i need to test from my phone, and do some comparing and substitutions to see if i am right. But ONCE AGAIN t-mobile has thrown a boulder in my way, and i seem to be one of the only ppl on here who have gotten one of the Fastboot disabled phones.