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I have an x720 and have been reading on how to unlock band 17 and 12 for at&t and t-mobile LTE service. As of right now I have some limited LTE service on band 2 and 4 (at&T) but it leaves much to be desired.
I see everyone here flashing the x720 firmware to get their x727 bootloader unlocked and then flashing back to the USA Firmware to get their LTE bands back. Is the reverse possible for the x720? Can I flash the USA firmware to get the LTE bands? Will this re-lock my bootloader?
I tried flashing the modem fix from https://forum.xda-developers.com/le-pro3/how-to/flashing-guide-roundup-leeco-le-pro-3-t3511901 on my x720 and now my sim card is being detected even after a wipe and reflashing my rom. So I'm assuming i'm gonna have to go back to stock firmware anyway. I've been a long time flashoholic and modder and I'm dedicated to getting this to work for us x720 people in the US.
What about this guide for the le max 2? I've heard all qualcomm devices can benefit from this procedure:
https://forum.xda-developers.com/le-max-2/how-to/guide-unlock-bands-leeco-le-max-2-fix-t3439154
UPDATE: Fixed no sim error after flashing x727 modem.
Downloaded a stock version of the Chinese Firmware and extracted the zip, then booted into fastboot and flashed the modem. You need the NON-HLOS.bin file. Then run "fastboot flash modem NON-HLOS.bin" and reboot! Voila. But still no band 17
I think unlocking the bands is not as easy as just flashing a ROM. When I was investigating OnePlus 3T, there is a long thread about it and basically band unlocking requires a lot of tools, some from Qualcomm and not easy to get, and a process that is not for noobs, not even for "professional TWRP flashers" but hardware-engineering-mode noobs anyway.
You can have a look here on how complicated it is (OP3T forum):
https://forum.xda-developers.com/oneplus-3/how-to/guide-unlock-additional-lte-bands-t3519563
Initially I liked OnePlus3T more because of optical stabilizer in camera, but lack of bands (or better to say, their separation into North American and European version) was a no-go for me. I need bands 2, 3, 4 & 20 and there is not a from-factory OP3T with those 4 bands in one device. Band unlocking might be possible but I would not risk messing with a $450 hone to get bands 3 & 20 unlocked on NA version. So I went with Le Pro 3 X720 and I am a happy camper.
So unless you know what you are doing, or are an adrenaline junkie, I would not mess with band unlocking.
I would absolutely LOVE to see an answer and/or progress on this EXACT scenario being made. Both myself and my wife have Le Pro 3's because of the universal network band support and INSANE performance of this phone (I've literally never seen such a performer with such large battery AND ridiculous band support at such a cost effective price) ((I bought both for $249 each).
I would LOVE to be able to buy the Chinese version with the 6G of ram, and then unlock the NA bands, specifically and especially bands 2,4,12,17,and 20 would be needed for our phones. So I'm super interested in this. You want to do exactly what I'd like to do, although you have the Chinese phone in your hand and I don't.
Both of our phones (x727) are bootloader unlocked, rooted, and TWRP recovery installed on stock .21S done by myself. So if there's anything I can help with, let me know.
Are you rooted? Download Network Signal Guru and lock bands under the menu in the top-right. See what LTE bands are listed there.
rubiohiguey said:
I think unlocking the bands is not as easy as just flashing a ROM. When I was investigating OnePlus 3T, there is a long thread about it and basically band unlocking requires a lot of tools, some from Qualcomm and not easy to get, and a process that is not for noobs, not even for "professional TWRP flashers" but hardware-engineering-mode noobs anyway.
You can have a look here on how complicated it is (OP3T forum):
https://forum.xda-developers.com/oneplus-3/how-to/guide-unlock-additional-lte-bands-t3519563
...
So unless you know what you are doing, or are an adrenaline junkie, I would not mess with band unlocking.
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Click to collapse
Yeah I've read through that process before I posted. I don't know if I'd call that "hardware-engineering" just because it puts a device into serial mode and communicates with NV memory.... I used qualcomm's boarddiag tool to unbrick a nexus 5 with the serial connection... doesn't seem any different at all actually :fingers-crossed:
I'm not ruling that out as a method, however I think we may have hope to do it easier. The x727 has been many times on this forum successfully flashed to x720 firmware. Everyone who did this reports the loss of usa bands though i have not seen confirmation that they GAIN additional chinese bands. That indicated to me that the baseband/modem is the only difference between the x727 having band 12 and the x720 not having it. We just need to tweak the x720 modem with the bits from the x727 modem.
https://forum.xda-developers.com/le-pro3/how-to/flashing-guide-roundup-leeco-le-pro-3-t3511901 In this thread there are several users that say they successfully flashed their x720 with x727 firmware and had full LTE, however there are also users reporting flashing the x727 firmware gives them a "no sim card detected". The latter was my experience. I believe this has to do with the switch from dual sim cards to single sim cards, i tried several build.prop tweaks to try and resolve with no luck.
Ascertion said:
Are you rooted? Download Network Signal Guru and lock bands under the menu in the top-right. See what LTE bands are listed there.
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From my x720: 1, 2, 3, 4, 5 ,7, 8, 20, 38, 39, 40, 41
I think that's what is officially listed online. Most people in the US would be fine with this except the notable lack of band 12(tmobile) and 17(at&t).
Scitzofrenic said:
I would absolutely LOVE to see an answer and/or progress on this EXACT scenario being made. Both myself and my wife have Le Pro 3's because of the universal network band support and INSANE performance of this phone (I've literally never seen such a performer with such large battery AND ridiculous band support at such a cost effective price) ((I bought both for $249 each).
I would LOVE to be able to buy the Chinese version with the 6G of ram, and then unlock the NA bands, specifically and especially bands 2,4,12,17,and 20 would be needed for our phones. So I'm super interested in this. You want to do exactly what I'd like to do, although you have the Chinese phone in your hand and I don't.
Both of our phones (x727) are bootloader unlocked, rooted, and TWRP recovery installed on stock .21S done by myself. So if there's anything I can help with, let me know.
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Click to collapse
Then let's get started! Looks like all we are missing from your list is band 12 and 17.
Can you get me a dump of the baseband? I'd like to start digging into it and compare the x720 and x727.
I may try the qualcomm tools if I get the chance this weekend. If I have success and don't brick my phone I'll do a write up specifically for the LP3...
vw_diesel said:
Then let's get started! Looks like all we are missing from your list is band 12 and 17.
Can you get me a dump of the baseband? I'd like to start digging into it and compare the x720 and x727.
I may try the qualcomm tools if I get the chance this weekend. If I have success and don't brick my phone I'll do a write up specifically for the LP3...
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Click to collapse
Sure man, I'm totally down to help however I can. I've never dumped a baseband before (never had the need) so the process eludes me, but I'm more than happy to perform whatever steps needed to do so.
Just give me a detailed rundown on how to do it or what tools/commands to run and I'll have it done for you ASAP. You can privately message me if you'd like, makes no difference to me. Give me the knowledge and I'll give you the love.
Scitzofrenic said:
Sure man, I'm totally down to help however I can. I've never dumped a baseband before (never had the need) so the process eludes me, but I'm more than happy to perform whatever steps needed to do so.
Just give me a detailed rundown on how to do it or what tools/commands to run and I'll have it done for you ASAP. You can privately message me if you'd like, makes no difference to me. Give me the knowledge and I'll give you the love.
Click to expand...
Click to collapse
I'll shoot you a PM in a bit.
As far as progress on this goes, I'm trying to enable them via the DFS guide that was copied over here: https://forum.xda-developers.com/le-pro3/help/unlocking-bands-t3565979
I'm going to see how complicated it is and if that negates the time we are spending here first.
I am having the exact same issue as the OP. Any movement on a solution. I am willing to help/test. Not a noon but far from an engineer.
Question, how do I unlock the bootloader now? With the us servers down I can't get twrp files. Also, I can't unlock the bootloader with adb. I'm trying to flash Lineage OS onto my x727. All help is appreciated, thanks.
tjvaldez01 said:
Question, how do I unlock the bootloader now? With the us servers down I can't get twrp files. Also, I can't unlock the bootloader with adb. I'm trying to flash Lineage OS onto my x727. All help is appreciated, thanks.
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https://forum.xda-developers.com/le...7-model-persistent-bootloader-unlock-t3500388
Hi guys, I found this post, but it is an old one from 2014, I want to know if it still work.
https://forum.xda-developers.com/galaxy-s5/general/how-to-add-rf-lte-frequency-bands-to-t2886059
Will test soon
I'm wondering about this too and will be testing it this week.
I've acquired a WW version of ZE520KL and have tried to change the firmware to the JP version to
see if that adds any usable bands. As stated somewhere else it appears that the hardware differs from
TW, JP, other version to the WW and I ended up with no network connectivity; both sim and WiFi.
I will be posting again after trying the QPST trick, but would love to hear if somebody else had any
success adding bands to their ZenFone 3. (CDMA and LTE 19 band is what I'm particularly interested in)
Take a look at this thread to start with.
I'm interested in this as well but haven't had any luck.
I am using ZE520KL Taiwan version. However, my it cannot support my Canadian carrier (Koodo) LTE network. Knowing the two model pretty much have the same spec (excepting screen size and ram), I am guessing if I can manage to flash the kernel from USA/Brazil/Canada ZE520KL, then the LTE maybe work somehow?
Suggestion？ Help？
That'll just brick the phone, I'd think. That's what happened when I tried flashing the Canadian modem on my Canadian ZE552KL after flashing the WW ROM from ASUS' website.
callmebrain said:
I am using ZE520KL Taiwan version. However, my it cannot support my Canadian carrier (Koodo) LTE network. Knowing the two model pretty much have the same spec (excepting screen size and ram), I am guessing if I can manage to flash the kernel from USA/Brazil/Canada ZE520KL, then the LTE maybe work somehow?
Suggestion？ Help？
Click to expand...
Click to collapse
It won't work even it was possible to make it boot with this kernel.
Hello, guys.
I have two leeco phones, x722 and x820.
My x820 perfectly support the dual standby (4G + 3G) with EUI indian version. (but not with EUI chinese version).
But my x722 incompletely support like as x820 with EUI chinese version.
In my country (South Korea), there is 3 network vendors (SKT / KT / LGU).
SKT and KT provide 4G and 3G services, and LGU provide only 4G service.
When I use SKT/KT, dual standby of x820 and x722 work perfectly.
But, when I use LGU with SKT or KT, only dual standby of x820 with EUI indian version work.
The cases of x722 with any ROM and x820 with EUI chinese version, the USIMs are activated only one by one. not standby simutaneously. (x720 is too)
What are the differences of network firmware between EUI chinese and indian version for x820?
I think if the differeces be applied to ROM for x720/x722, then x720/x722 can support dual standby perfectly in South Korea.
As I know, there is no EUI indian version for x720/x722.
How to port EUI indian version of x820 to x720/x722?
Have you checked the frequencies for your carrier? Check the product's listing and your carrier's supported frequencies. EDIT: looks like the x722 has all the frequencies required to work with your carriers on HSDPA and LTE. So the issue could be the ROM, or... it could be a hardware issue, OR you have to enter the APN settings for your carrier on one or both SIMs on the x722.
The x722 was only released in China, but was released internationally from Chinese sellers like Gearbest and Geekbuying, with unofficial, modified ROMs containing multiple languages. You should try flashing a custom ROM on the x722 to see if the issue gets solved. Like LineageOS or AICP. Or you can even try a modified version of 26s (AKA custom ROMs by users here). Be sure to go through the thread stickied here before attempting anything though (whatever you do, don't update to stock 26s, only modded 26s found here in the forums).
The cases of x722 with any ROM and x820 with EUI chinese version, the USIMs are activated only one by one. not standby simutaneously. (x720 is too)
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In that case, it could be a hardware limitation. I don't think the issue would be APN settings at that point. Again, you can try a custom ROM but I don't know if it would help with modem issues like yours. This phone has no official English ROM like other Le phones, which have either official Indian or U.S. ROMs, and no kernel sources have been released for this device, so developing for this phone is already annoying as is.
Guys,
I have read the whole forum and my understanding is:
My phone is Model HD1925, purchased in B&H.
- there was no option to flash international / stock non t-mobile firmware in 2021 at least. Is it possible to do now?
- if flash international/non t-mobile firmware/rom is not possible, is it a way or need top get rid off from T-Mobile soft ?
- is it another custom ROM which can be installed?
There are several sites, I have found which provide an instructions to flash international firmware, but this is really opposite to xda forum and makes me suspicious.
The phone will be given to a kid, so I prefer to clean it up from unneeded SW and also keep it up to date due to security reasons.
I'm not living in USA and not care about 5G.
The phone is SIM unlocked and bootloader unlocked using OnePlus .bin file.
Current version is 11, April 1, 2022 Update.
Really appreciate your help.
Hey, there. I'm sorry to tell you that you can't do that, because the hardware of 1+7tpro International Edition is very different from that of McLaren special edition. Before your release, I have tried to use the 9008 after-sales firmware of Chinese Version (hd1910) to brush into this phone, but unfortunately, this phone can't work, and even entered Qualcomm's crash mode. My suggestion is to use ADB to freeze all programs related to T-Mobile, so, You can enjoy 5g and later OTA updates.
Tsukinoruka! said:
Hey, there. I'm sorry to tell you that you can't do that, because the hardware of 1+7tpro International Edition is very different from that of McLaren special edition. Before your release, I have tried to use the 9008 after-sales firmware of Chinese Version (hd1910) to brush into this phone, but unfortunately, this phone can't work, and even entered Qualcomm's crash mode. My suggestion is to use ADB to freeze all programs related to T-Mobile, so, You can enjoy 5g and later OTA updates.
Click to expand...
Click to collapse
I have hd 1925 device and wand to install global version from t mobile version... Can i do it plz help me
Hai i have
OP7T PRO McLaren Edition 5G T-Mobile and want to install global version from t mobile version... Kindly help me
sbw17 said:
Guys,
I have read the whole forum and my understanding is:
My phone is Model HD1925, purchased in B&H.
- there was no option to flash international / stock non t-mobile firmware in 2021 at least. Is it possible to do now?
- if flash international/non t-mobile firmware/rom is not possible, is it a way or need top get rid off from T-Mobile soft ?
- is it another custom ROM which can be installed?
There are several sites, I have found which provide an instructions to flash international firmware, but this is really opposite to xda forum and makes me suspicious.
The phone will be given to a kid, so I prefer to clean it up from unneeded SW and also keep it up to date due to security reasons.
I'm not living in USA and not care about 5G.
The phone is SIM unlocked and bootloader unlocked using OnePlus .bin file.
Current version is 11, April 1, 2022 Update.
Really appreciate your help.
Click to expand...
Click to collapse
Where from you got bootloader unlock.bin file???
Manan Bhutta said:
Where from you got bootloader unlock.bin file???
Click to expand...
Click to collapse
OnePlus
Tell me how
here you go
https://www.oneplus.com/support/answer/detail/op588
OnePlus replies after 7 days.
sbw17 said:
here you go
https://www.oneplus.com/support/answer/detail/op588
OnePlus replies after 7 days.
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Click to collapse
If we will try to unlock bootloader without tocken then what will happened???. There will show error or mobile will go stuck or brick???
Manan Bhutta said:
If we will try to unlock bootloader without tocken then what will happened???. There will show error or mobile will go stuck or brick???
Click to expand...
Click to collapse
And also guid me that if we will unlock bootloader, then after this can we relock it or not???