Since we have gotten no updates or way of OEM unlocking, wouldn't it be possible to request SONY for the Linux Kernel source (spirit of the GNU GPL) of this handset and build a ROM using it just to get past the bootloader?
I am thinking about this in terms of the Amazon Fire tablet that is bootloader locked but somehow got a working CM 12 (or was it 13... can't remember).
ROM is different from kernel, you don't build ROMs from kernels.... and you won't be able to flash a custom kernel without an unlocked bootloader unfortunately.
if its oem locked, what about to flash global rom for ur phone and then proceed from there? as far as i know global roms are not lockedd so strictly
Related
Hi everyone!
I have a problem and I need your help. I'm using AVD Rom but I have locked bootloader ("Unlock bootloader allowed: no"). But I need help with flashing .zips. I was trying to do it via Flash Gordon but this application doesn't work properly for me and one time it caused bootloop in my phone. I wanted to flash Pure Performances™ but I don't know how. Does anyone know any program like Flash Gordon but more stable?
Thanks for help in advance
cahir1495 said:
Hi everyone!
I have a problem and I need your help. I'm using AVD Rom but I have locked bootloader ("Unlock bootloader allowed: no"). But I need help with flashing .zips. I was trying to do it via Flash Gordon but this application doesn't work properly for me and one time it caused bootloop in my phone. I wanted to flash Pure Performances™ but I don't know how. Does anyone know any program like Flash Gordon but more stable?
Thanks for help in advance
Click to expand...
Click to collapse
There are restrictions on CUSTOM ROMS which require UNLOCKED BOOTLOADER. However, some ROMS can even work on LOCKED BOOTLOADER. So every time you flash your ROM with locked bootloader, you will end up bootlooped. Sometimes, the ROM would work but some extra modifications wouldnot work (as they require further freedom which only unlocked bootloader can provide)/ Thus flashing Zips made for UNLOCKED BOOTLOADER will also result in bootloops.
The best way would be to check out which ROMS support locked bootloaders or if someone from your community comes out with a hack to UNLOCK your bootloader when you are not allowed.
Hnk1 said:
There are restrictions on CUSTOM ROMS which require UNLOCKED BOOTLOADER. However, some ROMS can even work on LOCKED BOOTLOADER. So every time you flash your ROM with locked bootloader, you will end up bootlooped. Sometimes, the ROM would work but some extra modifications wouldnot work (as they require further freedom which only unlocked bootloader can provide)/ Thus flashing Zips made for UNLOCKED BOOTLOADER will also result in bootloops.
The best way would be to check out which ROMS support locked bootloaders or if someone from your community comes out with a hack to UNLOCK your bootloader when you are not allowed.
Click to expand...
Click to collapse
I understand but most of zips caused bootloop if i flashed them via flash gordon. And I've read that Pure Performances modification doesn't need unlocked bootloader
Hello everyone.
I live in Brazil and I bought at the Aliexpress MI4C Xiaomi. I haven't received it yet, but I've already started researching ways to use it with another ROM than the original. The seller sends the device with google apps and multilanguage option. So, he makes some modification in the ROM, and says to not update the ROM officially on Xiaomi servers.
I see a lot of complaints about the Chinese bloatwares in ROM and so I wanted to install one that was good, but nothing with applications in Chinese or unnecessary ones.
My question is: in this case the bootloader is already unlocked?
In the meantime, I sent my request for unlocking bootloader to Xiaomi and received the SMS containing a link. As soon as I get the cellphone I intend to do the procedure. There is a risk of bricking the phone?
I’ll do appreciate good links with how-to and good ROM to daily use.
Thank you.
The seller shipping a modified ROM and telling you not to update the official would suggest your bootloader will not be locked. For now only flashing the latest official China dev builds will lock your bootloader.
Getting pre-approved for unlocking couldn't hurt though I guess.. just in case. You might need to have a working Xiaomi framework in your ROM to register your phone once though. If your ROM does not have the xiaomi services, I would suggest either Xiaomi.eu or sMiUI as a ROM, both are pretty much stock MIUI with some chinese bloat trimmed.
But most likely you will not need to unlock your bootloader anyway. You will need to check your bootloader through adb anyway before doing the steps to flashing a new ROM. You will best be flashing your recovery through adb, the instructions can be found through most ROM pages or simply searching TWRP Mi 4C. The command to check if it's unlocked is
Code:
fastboot oem device-info
A very extensive directory can be found in the INDEX thread, first in this forum.
Logic_ said:
The seller shipping a modified ROM and telling you not to update the official would suggest your bootloader will not be locked. For now only flashing the latest official China dev builds will lock your bootloader.
Getting pre-approved for unlocking couldn't hurt though I guess.. just in case. You might need to have a working Xiaomi framework in your ROM to register your phone once though. If your ROM does not have the xiaomi services, I would suggest either Xiaomi.eu or sMiUI as a ROM, both are pretty much stock MIUI with some chinese bloat trimmed.
But most likely you will not need to unlock your bootloader anyway. You will need to check your bootloader through adb anyway before doing the steps to flashing a new ROM. You will best be flashing your recovery through adb, the instructions can be found through most ROM pages or simply searching TWRP Mi 4C. The command to check if it's unlocked is
Code:
fastboot oem device-info
A very extensive directory can be found in the INDEX thread, first in this forum.
Click to expand...
Click to collapse
you cannot check the bootloader locked or not by that way. My phone when checking this, gets the input "bootloader unlocked: false" but I can flash other recovery freely.
in his case, he is using a modified rom, it means his bootloader is not yet unlocked. Right now, if he wants to come back to chinese rom, he should use Mi flash to flash his phone. If he wants other rom like CM13, he should download the latest TWRP and the rom, put the rom into his phone storage. Then try to go to fastboot to flash the recovery, then go to the recovery and flash the rom.
tuanhung303 said:
you cannot check the bootloader locked or not by that way. My phone when checking this, gets the input "bootloader unlocked: false" but I can flash other recovery freely.
in his case, he is using a modified rom, it means his bootloader is not yet unlocked. Right now, if he wants to come back to chinese rom, he should use Mi flash to flash his phone. If he wants other rom like CM13, he should download the latest TWRP and the rom, put the rom into his phone storage. Then try to go to fastboot to flash the recovery, then go to the recovery and flash the rom.
Click to expand...
Click to collapse
Ah, that might be incorrectly reporting indeed. In any case when trying to flash recovery, if you're locked it'll simply fail and won't be harmful.
But why would you think his bootloader is not unlocked? If he's using a modified rom, it was probably flashed through fastboot or a custom recovery, both require the bootloader to be unlocked.
But even if he was not on a modified rom, stock Mi 4c have always come bootloader unlocked. Someone would have to have gone out of their way to lock the bootloader and I doubt any reseller would do that, they would risk a lot of refunds from angry customers.
I strongly advise against using miflash to flash any official rom unless you have no choice, since then there's a chance you WILL lock your bootloader. For now only dev builds are locking it, but the next stable release might very well too.
The first step should be to flash TWRP
The second step to stay away from Official China build
The third step to keep away from Official China build
The fourth st...
^ sorry my bad.... I was not focused. Actually I mean his bootloader is unlocked .
The safest way is flashing via computer, using mi flash or flash twrp image. You are right
1. Ur phone not lock bootloader
2. U can flash custom recovery...(TWRP)
3. "MUST" Stay away from official MIUI ROM
4. Flash whatever u want...sMiui, CM13, etc,etc
5. Remember Point No.3
***Btw, download official Fastboot ROM and keep it to ur drive, for just in case if u want to sell it again
Hello. Thank you all. I just received my phone. Great, btw. I'll read again and again all instructions and try. Thanks again!
Cadimarco said:
Hello. Thank you all. I just received my phone. Great, btw. I'll read again and again all instructions and try. Thanks again!
Click to expand...
Click to collapse
Even as a last resort to getting your phone working if you did something wrong, please don't install the newer official roms, it's the mistake I did this weekend now I have a locked phone with a rom that has force-closes everywhere and absolutely no way back.
vletrmx21 said:
Even as a last resort to getting your phone working if you did something wrong, please don't install the newer official roms, it's the mistake I did this weekend now I have a locked phone with a rom that has force-closes everywhere and absolutely no way back.
Click to expand...
Click to collapse
yes, or the safer way is always flash the latest chinese rom via miflash. twrp does not like Chinese roms
tuanhung303 said:
yes, or the safer way is always flash the latest chinese rom via miflash. twrp does not like Chinese roms
Click to expand...
Click to collapse
No
No No
No No No
No No
No
No.
Don't flash the latest chinese rom.
No.
The only scenario where you would want to use miflash to flash a chinese rom would be as a last resort to flash the fastboot version of V7.1.6.0.LXKCNCK to restore your phone. Any later version will lock your bootloader.
If you don't care about locking your bootloader and the arduous process of unlocking it, you're easier off just taking all the latest updates OTA via the updater.
Hello everyone. Thanks for the help. In fact my bootloader was unlocked. I flashed twrp 3.0.0.3 and flashed the CM13 teamluminial, Android 6.0.1. Excellent. Thank you.
Hi!
Same scenario here..
I will receive Mi 4c with the Bootloader Unlocked, Rooted and the Multilanguage ROM.
But I have already received from Xiaomi after my request also the number for the official unlock procedure but now I'm a bit confused..
Do I have to unlock the bootloader once and for good with the official way?
Because I've read that the unofficial way isn't so secure in long term.
Do I have to install from the Updater the latest Cina Dev ROM and after that to proceed with the official unlock? Or it is better to use the Fastboot ROM?
Please could some one tell me in any case what to do ?
Thanks !
If you don't flash something that will lock your BL, no need to Unlock.
Ok first I must check the status of the bootloader to be sure that it is unlocked (via cmd control or cpu-z)
And after that can I choose an unofficial weekly miui.eu international ROM and install it?
Can I download and also update every week via Updater this ROM without issues?
At the moment my problem with flashing is that I don't have my pc (the one I have now runs win xp) and I don't want to stuck with the eventually malware or fully spammed modified rom of the reseller..
Which options do I have?
How does TWRP nandroid work with no sd card?
stillsober said:
How does TWRP nandroid work with no sd card?
Click to expand...
Click to collapse
TWRP works perfectly. The backup is simply stored in your internal storage。
Hello everyone!
I bought a mi 4c from gearbest which came with a custom\unofficial possibly full bloatware rom, because of this i decided to install the last version of miui for mi 4c from xiaomi.eu! To do this i had to unlock my bootloader, yes my bootloader was looked because before i thought about xiaomi.eu rom, i had installed the lastest stable chinese rom by using the rom updater which i think that it looked the bootloader when i did this. I don't know if the bootloader was looked or not while i had that custom rom on the phone because i did not check it.
So my bootloader was looked and i wanted to install TWR to install the xiaomi.eu rom because of the international support and because of google services and play store which i had tried to install in the chinese stable rom but i had failed miserably to do so! So i want to install TWR but i did not want to wait for the sms with the code to unlock my phone because i had read people complaining that the code takes a long time to arrive and etc! So to solve my problem i used this unofficial way to unlock my bootloader -> http://en.miui.com/thread-247961-1-1.html <- which worked and i got my bootloader unlock, installed TWR and the lasted xiaomi.eu rom for mi 4c
/\ I regret using the unofficial method to unlock my phone, because two days later o got the sms with the code Haste is the enemy of perfection!
But now i want to go back to stable chinese rom because my phone is overheating and throttling a lot and also the GPS works really bad which it did not on the chinese rom!
Now for the doubts:
1 - If i use Fastboot + Miflash to flash the last stable chinese rom, is there the risk of bricking my phone? Because of the way i had unlocked my bootloader i mean?
2 - Is there way to lock the bootloader again, so i can unlock it the right way? I mean using mi unlock and the code that i've received? It will make any difference using the official way in relation to the unofficial way, it will be worth it i mean?
1. only risk is you have a power blackout
2. you can, fastboot oem lock
Hi! Please I really need your experience
I will receive my new Mi 4c with the Bootloader Unlocked from the re seller , Rooted and with Multi language ROM.
Do I have to unlock the bootloader with the official method (which means flashing Cina Dev ROM -to re lock the bootloader- and go on with the Xiaomi's code procedure..) or it is possible to get all things done as soon I get my device by choosing an unofficial weekly miui.eu international ROM and install it normally from the Updater app but also be able to update it every week via Updater without issues?
My problem with flashing is that I don't have my laptop and the one I have now runs win xp.
não-soi-jo said:
Hello everyone!
I bought a mi 4c from gearbest which came with a custom\unofficial possibly full bloatware rom, because of this i decided to install the last version of miui for mi 4c from xiaomi.eu! To do this i had to unlock my bootloader, yes my bootloader was looked because before i thought about xiaomi.eu rom, i had installed the lastest stable chinese rom by using the rom updater which i think that it looked the bootloader when i did this. I don't know if the bootloader was looked or not while i had that custom rom on the phone because i did not check it.
So my bootloader was looked and i wanted to install TWR to install the xiaomi.eu rom because of the international support and because of google services and play store which i had tried to install in the chinese stable rom but i had failed miserably to do so! So i want to install TWR but i did not want to wait for the sms with the code to unlock my phone because i had read people complaining that the code takes a long time to arrive and etc! So to solve my problem i used this unofficial way to unlock my bootloader -> http://en.miui.com/thread-247961-1-1.html <- which worked and i got my bootloader unlock, installed TWR and the lasted xiaomi.eu rom for mi 4c
/\ I regret using the unofficial method to unlock my phone, because two days later o got the sms with the code Haste is the enemy of perfection!
But now i want to go back to stable chinese rom because my phone is overheating and throttling a lot and also the GPS works really bad which it did not on the chinese rom!
Now for the doubts:
1 - If i use Fastboot + Miflash to flash the last stable chinese rom, is there the risk of bricking my phone? Because of the way i had unlocked my bootloader i mean?
2 - Is there way to lock the bootloader again, so i can unlock it the right way? I mean using mi unlock and the code that i've received? It will make any difference using the official way in relation to the unofficial way, it will be worth it i mean?
Click to expand...
Click to collapse
1. i suppose no, it will only brick if you have TWRP recovery flashed to recovery partition. My workaround is to never flash TWRP in the first place, but boot to TWRP from Fastboot every time i want to flash something. definitely a hassle but should be guaranteed to work. Never tried though, i am fine with CM ROM and unlocked bootloader.
2. If i read correctly, the latest dev ROM will lock the bootloader back. So if you want to unlock, you must flash the old MIUI version as suggested in the unofficial unlock method again.
raptonicus said:
Hi! Please I really need your experience
I will receive my new Mi 4c with the Bootloader Unlocked from the re seller , Rooted and with Multi language ROM.
Do I have to unlock the bootloader with the official method (which means flashing Cina Dev ROM -to re lock the bootloader- and go on with the Xiaomi's code procedure..) or it is possible to get all things done as soon I get my device by choosing an unofficial weekly miui.eu international ROM and install it normally from the Updater app but also be able to update it every week via Updater without issues?
My problem with flashing is that I don't have my laptop and the one I have now runs win xp.
Click to expand...
Click to collapse
you can unlock via unofficial method. Win XP should be able to flash it. CMIIW though
Thanks but it's not necessary anymore ..I've changed the Mi4c with Mi4.
Hi.
I'm right now on TS CM 13.1 and I want to try the RR. But I didn't unlock the bootloader officially, so I need to do it properly now so I won't end with an locked bootloader.
While I'm waiting for the approval... can I just flash the latest China dev ROM with my current recovery? Or should I flash it from fastboot?
Thank you.
Since you have a custom recovery, try Xiaomi.eu or miGlobe, though be careful as I think latest versions (Android 7) will lock the bootloader. To be safe, I'd flash an older version with Android 5.1 for now.
You can't try RR 5.8.1 based on Android 7.1 as it requires lollipop bootloader.
Or you can flash 6.12.22 and then update to any Nougat Miui Rom available on Xiaomi.eu. This is done via Updater app.
Sent from my Mi-4c using Tapatalk
I didn't realise there was a previous RR version with lollipop bootloader.
I already got the SMS with the approval from Xiaomi. I though it would take long. So, if get that right, I should first flash an older Android 5.1.1 Dev ROM and than update it with the Updater app to the latest version with 7.1 . This will lock the bootloader and than I can unlock it officially.
If I do it from from fastboot I can flash directly the latest 7.1 dev ROM, right?
Thank you guys. I always messed around with ROM's with my old GNex, but this Miui stuff confuses me a bit.
No need. Just go in TWRP and see the RR N thread there is a link to nougat blobs. Install that and then install newer TWRP that works with nougat (see android development). I think at this point you'd have to unlock bootloader. Then install room normally
But, as I read in the RR N thread, after I flash those blobs I'll end up with a locked bootloader if I previously unlocked it unofficially. As I did.
And, at least I think, I can only unlock it again from an official ROM. That's why I want to flash Miui.
X-static said:
But, as I read in the RR N thread, after I flash those blobs I'll end up with a locked bootloader if I previously unlocked it unofficially. As I did.
And, at least I think, I can only unlock it again from an official ROM. That's why I want to flash Miui.
Click to expand...
Click to collapse
Whether you have unlocked your device officially or not, it will still lock your bootloader. The key here is if you have the permission to unlock it. If not, then don't proceed. You can officially unlock your bootloader after 5 business days upon receiving the SMS.
Ok. I do have the permission. And can I unlock the bootloader right away with mi flash unlock on a custom ROM or do I need the official miui ROM?
Worked for me with no OS, so I assume you do not need miui.
X-static said:
Ok. I do have the permission. And can I unlock the bootloader right away with mi flash unlock on a custom ROM or do I need the official miui ROM?
Click to expand...
Click to collapse
After you flash the blobs, the bootloader will be locked. Unlock it via Mi Flash. Then flash a Nougat compatible TWRP and you're good to go in flashing Nougat RR.
Device: SO-03J (Docomo)
Software: Android 8.0
Build number: 41.3.B.1.197
Status: Not rooted/Bootloader locked
Bootloader unlock allowed: No
Hi, I want to ask if my device here could potentially flash a global rom or any other stock rom variants that could enable me to unlock the bootloader. If can, I want to know which roms are allowed to be bootloader unlocked. I personally dont care if things will be buggy and wont work because as soon as I flash the roms I would quickly flash twrp and flash my chosen custom rom (If I could..and thats one thing again to ask. Can I flash any custom roms posted on XDA to my phone...?). As to why I'm asking this question is that I'm looking to boost my devices performance,latest android version(if possible),prolong battery,resolve heat issues and resolve the terrible wifi signal (keeps disconnecting and poor reception). I hope I've given enough information for this and sorry for the multiple questions asked.:laugh:
Same with my Xperia Z1 but still can't unlock the bootloader if bootloader unlock allowed say NO
yes. you can flash global rom via using sony flash tool
working fine..but bootloader unlock status still says NO
but flashing global rom makes more useful..