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Hey guys,
Just wondering if the Sony Xperia Z will come with a locked or unlocked bootloader?
if it is locked, can it easily be relocked after unlocking it for warranty purposes?
I know there isnt much info out right now, but i have never owned a sony xperia phone so,
someone shed some light for me?
Devices from carriers usually can't be unlocked. If you buy it outright then usually it can be unlocked. The process does not record your full IMEI and can be relocked after so you are pretty safe in that regard. My HTC takes the full IMEI (so it can be identified) and if you lock it then it goes to "re-locked" and not "unlocked" .... so the sony method is actually pretty good.
Before buying you can always check on a live unit if bootloader can be unlocked.
M.
mattman83 said:
Devices from carriers usually can't be unlocked. If you buy it outright then usually it can be unlocked. The process does not record your full IMEI and can be relocked after so you are pretty safe in that regard. My HTC takes the full IMEI (so it can be identified) and if you lock it then it goes to "re-locked" and not "unlocked" .... so the sony method is actually pretty good.
Before buying you can always check on a live unit if bootloader can be unlocked.
M.
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Ah okay thanks mate,
hmm new to Sony here too. So what are the chances of pre-orders from carriers being bootloader locked? Just to clarify, does that mean carrier purchased devices are useless (if they are locked)? I was planning to get my device from Orange Uk as i can get a pretty decent 40% off the monthly tariff which makes it the best deal for me. But if it is locked then I may need to pass on this....bummer
m00moo said:
hmm new to Sony here too. So what are the chances of pre-orders from carriers being bootloader locked? Just to clarify, does that mean carrier purchased devices are useless (if they are locked)? I was planning to get my device from Orange Uk as i can get a pretty decent 40% off the monthly tariff which makes it the best deal for me. But if it is locked then I may need to pass on this....bummer
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Well, if i recall correctly, the verizon droid DNA had a permanent locked bootloader too, but the guys here on XDA found a way to crack it.
who knows, maybe there will be a loophole discovered after the first few days?
I'm currently using a T-Mobile Xperia T, and the bootloader is not unlockable. So I would guess the same for the Z.
Though I think early units are generally unlocked (but don't quote me on that but this was the case with my Galaxy SIII and another guy mentioned this for UK network 3).
AW: [Q] Xperia Z Bootloader?
mattman83 said:
Devices from carriers usually can't be unlocked. If you buy it outright then usually it can be unlocked.
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Is this just the way sony handles it's bootloader?
I unlocked several different phones which were ordered from a carrier without problem. Depends on the device itself!
But Sony seems to be very developer-friendly. There's a developer site on sonys website, where details about bootloaders are posted. Don't know the exact url atm, I'm at work...
For me it is essential to get a phone where bootloader can be unlocked. My first phone was a lg, without custom rom I would not use it anymore...
It all depends on the country. In The Netherlands all bootloaders can be unlocked, even if it are branded handsets from a carrier.
again as mentioned this is my first Sony Android device so please bare with me. Can someone explain the reasons to unlock the bootloader as from what i've seen people have said u still can flash ROMS with a locked bootloader?
m00moo said:
hmm new to Sony here too. So what are the chances of pre-orders from carriers being bootloader locked? Just to clarify, does that mean carrier purchased devices are useless (if they are locked)? I was planning to get my device from Orange Uk as i can get a pretty decent 40% off the monthly tariff which makes it the best deal for me. But if it is locked then I may need to pass on this....bummer
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Click to collapse
If you're getting any sort of subsidy discount, it's highly likely your device will not be unlockable.
The general rule for Sonys is: If it is sold SIM-locked, you will not be able to unlock the bootloader. If it is sold SIM-unlocked, you'll be able to unlock the bootloader. If the carrier later gives you a SIM-unlock code for a device that is sold SIM-locked, your bootloader will remain locked (Sony is working on trying to change this with carriers).
spazzy1912 said:
Well, if i recall correctly, the verizon droid DNA had a permanent locked bootloader too, but the guys here on XDA found a way to crack it.
who knows, maybe there will be a loophole discovered after the first few days?
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Click to collapse
Sony's bootloader security is pretty strong. If the Z were likely to have a loophole, the T would've probably been defeated by now.
m00moo said:
again as mentioned this is my first Sony Android device so please bare with me. Can someone explain the reasons to unlock the bootloader as from what i've seen people have said u still can flash ROMS with a locked bootloader?
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You can cross-flash firmwares for other devices, but you cannot flash anything that has a modified kernel.
Thanks Entropy for your very helpful reply! I appreicate it
In regards to the discount, it is only because a friend works for them and in return are given a discount for friends and family. Otherwise it will be just the same as purchasing it direct from my carrier. My usual experience with purchasing a phone from a carrier, especially a newer phone which has 'just' (first batch usually) released is that they are usually simfree stock (sim unlocked), but heres hoping!
The Bell (Canada) Xperia ZL I have has an unlockable bootloader.
Only stok based roms... cm, miui, paranoid, etc bootloader must be unlocked so you can flash custom kernel
Sent from my LT26i
So therefore AOSP roms cannot run on a Locked bootloader due to requiring a different kernel. Where as variations/modded versions of Sony's rom can be flashed due to not requiring a custom kernel.
I think I understand now. The Sony rom looks decent to be honest which isn't something I can say about Touchwiz. It is actually skinned nicely and I wouldnt mind a de-bloated version of that.
I'm pretty sure sony will unlock it, judging from Sony's recent actions where they released the kernel source for the T if i'm not mistaken. Why wouldn't they do it for this monster phone right?
brambizimski said:
I'm pretty sure sony will unlock it, judging from Sony's recent actions where they released the kernel source for the T if i'm not mistaken. Why wouldn't they do it for this monster phone right?
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It's already listed on Sony's "Unlock Bootloader" site. So i guess they'll all unlock, unless you get it carrier branded/simlocked and they ( carrier ) will interfere with unlocking process.
m00moo said:
again as mentioned this is my first Sony Android device so please bare with me. Can someone explain the reasons to unlock the bootloader as from what i've seen people have said u still can flash ROMS with a locked bootloader?
Click to expand...
Click to collapse
I believe you need an unlocked bootloader to be able to boot the rom?
For htc devices, you need an unlocked bootloader, but it does not have to be S OFF.
If it was S ON, you just had to do an extra process of manual flashing the boot.img through fastboot
This is pretty simple if it's sim locked then it's also bootloader locked. The issue is not if you bought it on your carrier or on a retailer store. It's about locks
spazzy1912 said:
I believe you need an unlocked bootloader to be able to boot the rom?
For htc devices, you need an unlocked bootloader, but it does not have to be S OFF.
If it was S ON, you just had to do an extra process of manual flashing the boot.img through fastboot
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Depending on what you mean by "boot the rom" i am assuming you are referring to AOSP roms which use a different kernel to stock roms usually. Thus if you cannot flash a custom rom on the phone with a "locked" bootloader, you are stuck with stock Sony type roms. Don't mind it personally just sucks i cannot experience the great kernels that the XDA devs release. Fingers cross the first batch of pre orders will be unlocked though as they are usually sim unlocked in my experience.
Riyal said:
This is pretty simple if it's sim locked then it's also bootloader locked. The issue is not if you bought it on your carrier or on a retailer store. It's about locks
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50% true. As Entropy said the simlock can be "unlocked" by the carrier. This will therefore then be a sim unlocked device, but the bootloader remains locked. This needs to be clarified to Sony noobies like myself who may think sim unlocking will result in a unlocked bootloader, or by buying a sim unlocked device from say Ebay they have definately gotten a unlocked BL.
spazzy1912 said:
I believe you need an unlocked bootloader to be able to boot the rom?
For htc devices, you need an unlocked bootloader, but it does not have to be S OFF.
If it was S ON, you just had to do an extra process of manual flashing the boot.img through fastboot
Click to expand...
Click to collapse
It's different again. With a locked bootloader you can't flash a custom kernel *at all*. I'm on a HOX now so I know all about the stupid htc bootloader unlock It basically means the device is useless for custom roms etc..
Still waiting to see if my local carrier will lock it or not, they have a mixed history with simlocking devices so could go either way. If it is locked I'll just pick get an iphone instead (should be roughly same price on contract) to sell on ebay and buy my sony outright I'll make it work one way or another.
M.
I'm going to return my dev edition moto x. Do I have to go through the process of relocking the boot loader or will they accept the return with the boot loader unlocked? I'm curious if anyone has tried this?
LSUtigers03 said:
I'm going to return my dev edition moto x. Do I have to go through the process of relocking the boot loader or will they accept the return with the boot loader unlocked? I'm curious if anyone has tried this?
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Re-Locking the BL won't do any good. They will know without a doubt that you had unlocked previously, since once re-locked, the status can never be changed back to "LOCKED", but only "RE-LOCKED".
Word is that they will honor the warranty on the DEV edition regardless of whether or not you have unlocked.
Additionally, some individuals have reported that Moto honored the warranty on their *non-DEV* editions, even though they unlocked the BL - even though the terms seem to suggest this voids your warranty. I'm certainly not saying that they absolutley will honor it for a non-DEV edition, but the word is that they are honoring the warranty anyways.
The documentation seems to suggest that unlocking an actual DEV edition does not affect the warranty process whatsoever.
Good Luck :good:
I appreciate the reply. I'll give it a shot and see what happens.
Moto's policy for Developer Editions is... Unlocking the bootloader does NOT void the warranty. So there should be no fear of returning it unlocked.
I would just make sure you have flashed to a stock rom and factory reset the device to ensure its a hardware problem before you send it.
I bought two AT&T locked LG V40 last month on eBay. I carrier unlocked one and was waiting for the unlock code for the second. I crossflashed freshly unlocked one to Unlocked ROM Pie; no issues, great experience... but this is where it goes down. I resold the completely unlocked one and proceed to flash the Pie KDZ into the STILL carrier locked AT&T! You see, I barely use data/phone services so I totally forgot I never carrier unlocked this unit.
Here's the deal. Now I have the unlock code but the firmware was not design in input an unlock code for carrier.
Is there a workaround, I'm stuck with an AT&T locked LG v40 with unlocked ROM?
Extra comments: Maybe I can flash LineageOS and find a way to input the unlock code but here is where my experience falls short.
3laws said:
I bought two AT&T locked LG V40 last month on eBay. I carrier unlocked one and was waiting for the unlock code for the second. I crossflashed freshly unlocked one to Unlocked ROM Pie; no issues, great experience... but this is where it goes down. I resold the completely unlocked one and proceed to flash the Pie KDZ into the STILL carrier locked AT&T! You see, I barely use data/phone services so I totally forgot I never carrier unlocked this unit.
Here's the deal. Now I have the unlock code but the firmware was not design in input an unlock code for carrier.
Is there a workaround, I'm stuck with an AT&T locked LG v40 with unlocked ROM?
Extra comments: Maybe I can flash LineageOS and find a way to input the unlock code but here is where my experience falls short.
Click to expand...
Click to collapse
Pretty much unless you happen to have a backup of the stock AT&T firmware? But question why didn't you just OTA to AT&T pie first?
3laws said:
I bought two AT&T locked LG V40 last month on eBay. I carrier unlocked one and was waiting for the unlock code for the second. I crossflashed freshly unlocked one to Unlocked ROM Pie; no issues, great experience... but this is where it goes down. I resold the completely unlocked one and proceed to flash the Pie KDZ into the STILL carrier locked AT&T! You see, I barely use data/phone services so I totally forgot I never carrier unlocked this unit.
Here's the deal. Now I have the unlock code but the firmware was not design in input an unlock code for carrier.
Is there a workaround, I'm stuck with an AT&T locked LG v40 with unlocked ROM?
Extra comments: Maybe I can flash LineageOS and find a way to input the unlock code but here is where my experience falls short.
Click to expand...
Click to collapse
Hi. How did you crossflashed att version to unlocked rom?
To enter unlock code try dialing 2945#*405#, a menu will appear
Pixel 5 from "Google Emploee". Locked for AT&T and bootloader is unlocked?
I bought a pixel 5 from google emploee, who is saying he got it from google.
It has a sticker on the back with barcode and some numbers and a date of 6/26
Problems are:
1. It is locked for AT&T and does not want to unlock via AT&T website (https://www.att.com/deviceunlock/). I got a message from ATT that it is unlocked, but still does not like T-Mobile sim. Any suggestions?
2. It is saying the bootloader is unlocked. Will I have problems with google pay? Can I undo this?
3. How to check this is an actual Pixel 5, not a prototype or something? It says "model Pixel 5" in "About phone"..
worry said:
I bought a pixel 5 from google emploee, who is saying he got it from google.
It has a sticker on the back with barcode and some numbers and a date of 6/26
Problems are:
1. It is locked for AT&T and does not want to unlock via AT&T website (https://www.att.com/deviceunlock/). I got a message from ATT that it is unlocked, but still does not like T-Mobile sim. Any suggestions?
2. It is saying the bootloader is unlocked. Will I have problems with google pay? Can I undo this?
3. How to check this is an actual Pixel 5, not a prototype or something? It says "model Pixel 5" in "About phone"..
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Click to collapse
I can't speak as to the origin of your phone, buy it from someone else, and you're buying someone else's problems.
Unlocked bootloader and carrier unlocked are two distinctly different things.
Carrier unlocked means that you can use the carrier of your choice. Unlocked bootloader lets you flash images to you phone, from entire monthly security updates to a custom kernel, root, and do other fun things. Google Pay will not work with an unlocked bootloader unless you root the phone and hide that from Google using root-based trickery. (Standard Google Firmware)
The fact that your bootloader is unlocked means that it probably is NOT from AT&T. Why you seem to be carrier locked is a mystery to me, but I will tell you something, AT&T is probably the most evil carrier to deal with. My phone was purchased directly from Google, my first act was to unlock the bootloader, root it, then get the phone up and running with T-Mobile. If you don't want to root your phone, have no need for it, whatever, yes, it is possible to relock the bootloader. Be aware that this will wipe your phone clean, and you'll be starting fresh.
Look in the forums or:
https://developers.google.com/android/images
Google has very comprehensive instructions on how to lock/unlock your bootloader, flash factory images, take OTA's etc..
Be aware that if you aren't sure what you are doing, flashing a factory image can also wipe your phone, and you'll be back to square one if you don't backup your stuff.
There are tons of tutorials on this site on this subject, just poke around...
bleez99 said:
I can't speak as to the origin of your phone, buy it from someone else, and you're buying someone else's problems.
Unlocked bootloader and carrier unlocked are two distinctly different things.
Carrier unlocked means that you can use the carrier of your choice. Unlocked bootloader lets you flash images to you phone, from entire monthly security updates to a custom kernel, root, and do other fun things. Google Pay will not work with an unlocked bootloader unless you root the phone and hide that from Google using root-based trickery. (Standard Google Firmware)
The fact that your bootloader is unlocked means that it probably is NOT from AT&T. Why you seem to be carrier locked is a mystery to me, but I will tell you something, AT&T is probably the most evil carrier to deal with. My phone was purchased directly from Google, my first act was to unlock the bootloader, root it, then get the phone up and running with T-Mobile. If you don't want to root your phone, have no need for it, whatever, yes, it is possible to relock the bootloader. Be aware that this will wipe your phone clean, and you'll be starting fresh.
Look in the forums or:
https://developers.google.com/android/images
Google has very comprehensive instructions on how to lock/unlock your bootloader, flash factory images, take OTA's etc..
Be aware that if you aren't sure what you are doing, flashing a factory image can also wipe your phone, and you'll be back to square one if you don't backup your stuff.
There are tons of tutorials on this site on this subject, just poke around...
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Thanks.
Weird part is that If I go to system-> updates I see an update from ATT:
"ATT Redfin RD1A.2008..."
So this is not a "pure" google pixel? It has an ATT image? Can I install the genuine pixel 5 image?
You sort of do. If your bootloader is unlocked, and you get yourself decoupled from AT&T, you can grab the latest firmware directly from Google and flast it. There is no difference between the AT&T "model" and the generic Google version in the hardware. I don't know what's AT&T is up to these days but the AT&T versions at least older phones, used to lock down their bootloader and make it impossible to unlock. But if yours is already unlocked you sho6be able to put on Google's firmware and possibly escape from AT&T.
bleez99 said:
You sort of do. If your bootloader is unlocked, and you get yourself decoupled from AT&T, you can grab the latest firmware directly from Google and flast it. There is no difference between the AT&T "model" and the generic Google version in the hardware. I don't know what's AT&T is up to these days but the AT&T versions at least older phones, used to lock down their bootloader and make it impossible to unlock. But if yours is already unlocked you sho6be able to put on Google's firmware and possibly escape from AT&T.
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And what about AT&T lock? Once I have official image, the sim lock would be gone? Or do I need just to flash a modem?
So, I've seen some posts concerning this and, at this point, I'm ready to purchase and replace the motherboard.
My daughter recently acquired a used Moto X4 (running Android 9 "pie") from a friend and she wants it de-Googled. I can get the unlock data to unlock the bootloader but Motorola says that the phone is unlockable - that would be because the phone had been purchased from Amazon (software variant / channel = "amz"). I think that if the ROM and bootloader could be replaced with stock (which, apparently could be done if the phone were on a lower Android version), I'd be in business but everywhere I've looked says that this is impossible - Motorola must do an amazing job of locking down their phones!
Since I'm just about ready to purchase a new motherboard ($60+ at cellspare), any "dangerous" suggestions are welcome since she refuses to use the phone as-is - can't say that I blame her.
You could try to flash the phone with the stock ROM of the google FI variant, but whether or not that works would be anybodys guess as I don't believe the IMEI would be changed. If you are planning to get a new device anyway, it couldn't hurt to try it and see before you buy another phone. I have the google Fi variant, and I know for a fact that the bootloader can be unlocked on it.
Kilogrm said:
You could try to flash the phone with the stock ROM of the google FI variant, but whether or not that works would be anybodys guess as I don't believe the IMEI would be changed. If you are planning to get a new device anyway, it couldn't hurt to try it and see before you buy another phone. I have the google Fi variant, and I know for a fact that the bootloader can be unlocked on it.
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I have tried loading different ROMs onto a locked Motorola phone in the past - the bootloader will not permit itself to be overwritten without being unlocked. As I understand it, there's a hidden partition where a copy of the bootloader resides and, with the locked bit set, any attempt to overwrite the boot partition will trigger a check against the hidden partition and will prevent the overwrite.