Hey all, Its been a while since I've played with any new roms and finally got a chance to come and check things out to see whats out there.
WOW there's been a lot going on and I started reading thread after thread and searching to find out more.
Right now I'm on HyperDrive RLS16 with TWRP
and looking at a few roms and most say you have to have MJB 4.3 bootloader/modem and you CAN NOT downgrade back.
I searched for more on 4.3 bootloader to find out more but couldn't get a clear answer to this.
I've came up with some questions that I couldn't find answers to....
3. How to confirm what bootloader I have? Ive looked in TWRP and DL mode and couldn't find.
I think I flashed the MJ2 bootloader my mistake will there be any problems in going to MJB?
1. MJ2 is the bootloader in the leaked version of AT&Ts 4.3 ROM. MJB is the bootloader from the official release. As far as differences go, the MJ2 will allow you to downgrade to earlier bootloaders, whereas the MJB will brick your phone if you try to downgrade bootloaders to a previous version. I have seen several threads where people stated that they could use the MJB bootloader with older ROMs, just make sure the ROM in question does not try to install a bootloader. The other big difference is that the MJB bootloader will install Knox onto your system, at least I believe Knox is installed by the bootloader and not the ROM.
If you wish to sim unlock your phone without buying a code you would need to do it before installing the MJB bootloader. What I've read about the free unlock says that it must be done from stock 4.1.1, bootloader and all.
2a. The link to the bootloader was a dead end for me also. The link to the modem was viable.
2b. The links within the S3Rx thread lead to zips with bootloader and modem included, as opposed to your first link that had the bootloader and modem separate. The androidhostfile link you posted would have the MJB modem and bootloader, the other hidden link in the S3Rx thread was for the MJ2 bootloader and MJB modem. Loserskater, the OP of that thread and dev of the S3Rx ROM has stated that he uses the MJB bootloader and modem.
3. You could confirm from terminal emulator if you have root:
or with some of the free Root Checker apps. You would need one that includes build info.
I did run the command and got UCDLK3..Also checked with a root checker app that included build info. Does this mean my bootloader is 4.1.1? Attachment 2636061
Also to upgrade to 4.3 should I return to root stock then Unlock then return un rooted stock and update OTA ?
Yes, that would be the 4.1.1 bootloader. You can follow the directions of the Unlock thread at this point, which will require you being on stock. (The bootloader for 4.1.2 is MG2, and I think the bootloader for 4.0.4 is either LG1 or LEM.)
I have yet to unlock or take the 4.3 update. I will say yes to returning to unroot stock before upgrading to 4.3, this is what I have read not what I have done.
Those who might have thought that MediaTek wouldnever release working … more
17 Sep 2014
By Tomek Kondrat
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