![]() "To confirm that the BIAS attacks are practical, we successfully conduct them against 31 Bluetooth devices (28 unique Bluetooth chips) from major hardware and software vendors, implementing all the major Bluetooth versions, including Apple, Qualcomm, Intel, Cypress, Broadcom, Samsung, and CSR." "The BIAS attacks are stealthy, as Bluetooth secure connection establishment does not require user interaction." "The BIAS attacks are the first uncovering issues related to Bluetooth's secure connection establishment authentication procedures, adversarial role switches, and Secure Connections downgrades," the researchers said. However, it's a reality in most cases and not something likely to change any time soon.The Bluetooth Impersonation AttackS, aka BIAS, enable a malicious actor to establish a secure connection with a victim, without having to know and authenticate the long-term key shared between the victims, thus effectively bypassing Bluetooth's authentication mechanism. It's not something we want to hear we're not allowed to install (or try to install) any software we like on the expensive phone we paid for, even if it's one of the best Android phones. Rolling back to an older version is usually a little more complicated than just rooting your phone, even if it requires many of the same tools. I'm not trying to talk you out of it, but you need to know that the five minutes it takes to flash your phone back to an older version could have hours and hours of reading as a prerequisite. When you have to break in, you can't be careful enough. Unfortunately, that's not always the case and you'll usually see a handful of people explaining how they ruined their phone when things took a turn for the worse.įlashing an older version of your phone's bootloader is one of the few ways you can actually make the device unrecoverable. Sometimes the hacks used to flash software to your model of Android are simple and not that hard to do correctly. Your best bet is to visit online forums where others with the same model may be looking for the same thing.įinding an older version can be difficult, and most times that's the easiest part of it all. Companies usually don't like to share an installable version of their OS for some reason, and tracking down something you can flash yourself may prove very difficult. The thing is, most folks aren't using an unlockable device with factory images all packed up and ready to flash. Flashing the operating system to a phone isn't one of those things you can stop at the halfway mark. You'll also want to be sure you understand the process and have all the tools you need up and running. Check into the various backup and restore apps and be sure to have Google Photos set up to back up your pics and videos before you start clicking anything. Know that things like game progress, message histories, photos, and videos inside your messenger app, and any other third-party data that's not cloud-synced may be gone forever because a downgrade of the OS always requires a full device wipe. There is a lot of stuff you're not going to be able to back up without having root access. Read, understand what you've read, then do it.Download the version of the software you want to install and any utilities you need to install it.Back up everything you can to the cloud. ![]() If you have a phone that makes it possible, doing it is simple. Companies, even Google, go to great pains to try and get all products on the same version for the reasons we listed above. Frequently, a new version will first install a new version of the bootloader, and it won't flash software that's older, nor it will not allow you to re-flash the older bootloader. That still doesn't mean it will work, though. We've seen other companies offer a way to unlock bootloaders and have archives of older versions for certain phones that were sold unlocked. If you have a Pixel or a phone from another company that is willing to let you unlock your phone's bootloader and will provide you with a catalog of all the various versions of Android that apply to it, rolling back might be reasonably easy. (Image credit: Ara Wagoner / Android Central)
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