No mobile/cellular data after GPE RUU conversion. - One (M8) Q&A, Help & Troubleshooting

Just ran the RUU and the HTC M8 Firmware package for GPE only to have my mobile data stop connecting despite the fact texting and calling still functions. Trying to access APN's in settings lead to an error message saying the user could not view apns. I've since added my own to my providers specifications to no avail. Any suggestions?

nothing yet
Still attempting to resolve this tried changing firmware to sense and using the ROM as opposed to the RUU but the issue persists at this point It's likely I'll have to find a different rom

xFallow said:
Still attempting to resolve this tried changing firmware to sense and using the ROM as opposed to the RUU but the issue persists at this point It's likely I'll have to find a different rom
Click to expand...
Click to collapse
Hi,
I had been running my M8 for quite some time with GPE rom (not converted, eg firmware and radio from sense) in german vodafone network with no complaints. I then moved over to smartmobil which is part of Drillisch. And they are operating in the Telefonica network. Since then my connection went crazy. I guess that's because of the fact that Telefonica is integrating two networks, O2 and E-Plus. I reverted back to Sense and now everything is running smoothly. Don't know if this is of any help but I too would love to go back to GPE...

have your seen the last entry in this post http://forum.xda-developers.com/showpost.php?p=57453624&postcount=2 ?

Related

Problems installing Sense based roms

For some reason, every time I try to install a sense based rom, it never boots.
I'm fairly new to flashing, and have flashed 4 or 5 aosp roms. Every time I install one of those, it always works correctly, no issues.
I have tried to flash several Sense based roms, such as ARHD 20.1, Insert Coin, and nv, and each time, it never works. I always do a factory wipe beforehand as well as a wipe in the aroma installer. It will go thru the process and install, and then prompt me to reboot, which it does. Once the screen comes back onm however, it just hangs on the white htc screen with the red development text. When i get back to the hboot, itll show nothing for os.
I thought the issue may be that i dont have the latest firmware, but even people that dont have the latest firmware still are able to boot into the rom. Also, I just tried the NV rom which is based off my firmware, and it still gives me the same trouble. Does anyone know what I'm doing wrong?
I'm running an ATT Htc One m8, rooted, unlocked, s-off with sunshine, twrp recovery
mattprice86 said:
I thought the issue may be that i dont have the latest firmware, but even people that dont have the latest firmware still are able to boot into the rom.
Click to expand...
Click to collapse
Give the ROMs about 10 minutes, and I bet they will boot. The extremely long boot time, and lack of boot animation (another symptom of this issue) makes a lot of folks believe the phone is stuck/frozen, when in fact its just taking a reeeeeally long time to boot.
If its true that the ROMs in fact never boot, it might just be an issue with your recovery. fastboot erase cache and either re-install recovery, update to the latest version, or try another recovery (Philz).
Even if the Sense ROMs boot, you might find some serious things are broken with your outdated firmware, such a broken WiFi. So I suggest either update your firmware or stick or ROMs based on your present firmware.
Ok thanks, i will try again. Ive read a bunch of threads about updating my firmware but couldnt find an answer to a question I have about it.
If I upgrade my firmware to the latest WWE 3.28.401.6, will it mess up my ATT settings like the bands? Also, will it erase my internal sd card?
mattprice86 said:
If I upgrade my firmware to the latest WWE 3.28.401.6, will it mess up my ATT settings like the bands? Also, will it erase my internal sd card?
Click to expand...
Click to collapse
Firmware includes the radio baseband, so it may cause issues with reception on AT&T. It seems at least a couple folks have been flashing the 3.28 firmware, but I haven't seen enough reports to give me a warm and cozy feeling. With S-off (which is required to flash the firmware, anyway) you can always revert. But still, basic reception is more important to me than a couple updated features. Personally, I'll probably wait until the 3.x firmware specific to AT&T starts rolling out.
It seems like the M8 is radio agnostic like the Nexus 5 based on my experience.
I am on Rogers and flashed the latest firmware and my LTE works no issues.
The latest firmware is supposed to be EU so technically those North American bands are not supported but it works no issue.
Leads me to believe that the radio does not matter like the N5 where the 820 and 821 radios were interchangeable.
HTC One M8
Thanks redpoint, you were right, I gave it some time and it did come on. You always seem to be the one answering my questions, I appreciate it.
As for the new fw, I was thinking that would happen too from what I've read, I just needed someone more experienced to confirm that. I think I'll wait as well.
Thanks again
Elisha said:
It seems like the M8 is radio agnostic like the Nexus 5 based on my experience.
I am on Rogers and flashed the latest firmware and my LTE works no issues.
The latest firmware is supposed to be EU so technically those North American bands are not supported but it works no issue.
Click to expand...
Click to collapse
On the 2.x firmware, some folks in North America (I can speak mostly of AT&T specifically, although there are a lot of network similarities with Rogers) had varying degrees of issues with the "international" firmware. For some, the reception was worse, and others had NO SIGNAL whatsoever. Probably depended on what bands AT&T was using in their specific market.
Can't say whether 3.x firmware is the same way. But in my experience (or at least, reading reports by others here), I would have to disagree this phone is in any way "radio agnostic", at least from a software perspective (as the hardware is common among at least GSM versions, and baseband software is the only difference - but that is a slightly different topic).
So what is the latest firmware I can flash that's been known to work? I've seen that viper one is based off the 2.xx fw so do you know of anyone who's flashed it with att variant without any problems?
mattprice86 said:
So what is the latest firmware I can flash that's been known to work? I've seen that viper one is based off the 2.xx fw so do you know of anyone who's flashed it with att variant without any problems?
Click to expand...
Click to collapse
http://forum.xda-developers.com/htc-one-m8/development/firmware-flashing-panic-attacks-t2824048
No probs.
redpoint73 said:
On the 2.x firmware, some folks in North America (I can speak mostly of AT&T specifically, although there are a lot of network similarities with Rogers) had varying degrees of issues with the "international" firmware. For some, the reception was worse, and others had NO SIGNAL whatsoever. Probably depended on what bands AT&T was using in their specific market.
Can't say whether 3.x firmware is the same way. But in my experience (or at least, reading reports by others here), I would have to disagree this phone is in any way "radio agnostic", at least from a software perspective (as the hardware is common among at least GSM versions, and baseband software is the only difference - but that is a slightly different topic).
Click to expand...
Click to collapse
For the record, I have an AT&T model and am using the 3.xxx.xxx.6 firmware with absolutely Zero issues as far as signal. I get the exact same reception I did stock, and Very, Very similar reception to what my old Optimus G did in the same locations.
This indicates that there must be either a difference in hardware revisions (related to how some M8's can be firewater'd, whereas others need Sunshine), Or, the int'l radio firmware may not support the bands that are used on some towers in some locations. I'm leaning toward the former. For the record, my M8 is a "whelp", and I had to pay for Sunshine.
OMGMatrix said:
For the record, I have an AT&T model and am using the 3.xxx.xxx.6 firmware with absolutely Zero issues as far as signal. I get the exact same reception I did stock, and Very, Very similar reception to what my old Optimus G did in the same locations.
This indicates that there must be either a difference in hardware revisions (related to how some M8's can be firewater'd, whereas others need Sunshine), Or, the int'l radio firmware may not support the bands that are used on some towers in some locations. I'm leaning toward the former.
Click to expand...
Click to collapse
My guess would be the former as well. Keep mind that AT&T uses five different bands for LTE depending on your market region. Also keep in mind that travelling to another location may result in losing LTE reception (when you otherwise would have LTE on a AT&T specific radio).
Although none of this explains why I've seen some folks get NO SIGNAL whatsoever on AT&T's network after flashing the international firmware (2.x version, haven't seen any complaint yet on 3.28). Even if no LTE, those folks still should have been able to get HSPA and/or GSM since those AT&T bands appear to be supported by EMEA specs. So it leads me to believe there is something else going on aside from just band compatibility. Such as the network not falling back properly to HSPA/GSM.
I certainly don't have an issue if folks want to experiment with the 3.28 firmware on the AT&T network (as long as you know what you are doing, and are aware of the possible issues). Its certainly tempting with the 3.x based custom ROMs coming out. I might even experiment myself if I free up some time. But that spare time is a bit of a premium for me right now; and I also can't really afford ATM to have the possibility of reception issues or no service.
I was able to successfully upgrade my firmware to the 2.xxx by using skull dreams' method. As soon as my rom loaded, however, WiFi and data weren't working. I read through the thread and found that clearing cache and dalvik would fix it, so that's what I did and it worked. (initially I tried to wipe both at the same time, but it gave me errors; further reading showed I needed to wipe cache first and then dalvik).
I would now like to upgrade to the 3.xxx fw so I can install arhd 20.3, but want to know, if I upgrade my fw and it messes up, can I just do the same renaming and putting it on ext SD card to downgrade back to the 2.xx fw?
mattprice86 said:
I was able to successfully upgrade my firmware to the 2.xxx by using skull dreams' method. As soon as my rom loaded, however, WiFi and data weren't working. I read through the thread and found that clearing cache and dalvik would fix it, so that's what I did and it worked. (initially I tried to wipe both at the same time, but it gave me errors; further reading showed I needed to wipe cache first and then dalvik).
I would now like to upgrade to the 3.xxx fw so I can install arhd 20.3, but want to know, if I upgrade my fw and it messes up, can I just do the same renaming and putting it on ext SD card to downgrade back to the 2.xx fw?
Click to expand...
Click to collapse
You could always restore the backup you should be making before you do any mods on your phone. That would be the safest way.
So if I upgrade my fw then restore a backup, I will lose my fw changes?
I make nandroid backups before I do any, so I have approximately 60gb of backups on an external HD, and I always keep 1 or 2 on my internal and external storage

Converted dev phone, reception with 4.14.617.6 but not after OTA to 4.19.617.1

Hello,
After some troubles I've converted my S-OFF x.xx.410.xx phone to a dev edition 2 weeks ago by reading a lot on this forum. I believe I did the following:
- flash 0PJAIMG nougat.zip from bootloader mode / SD
- run 4.14.617.6 RUU after flash
This worked for perfectly for a time.
On 1-1-2017 I got the 4.19.617.1 OTA notification which I accepted as I did not modify the system in any way. OTA completed succesfully however after OTA the phone lost mobile reception. In Android IMEI was not visible. In fastboot I saw IMEI with "fastboot getvar all".
Re-flashing RUU 4.14.617.6 worked to regain mobile reception however OTA nofication would of course still appear. Today I retried but with the same results -- no mobile reception after OTA.
To confirm with the new RUU available I ran the 4.19.617.1 RUU to re-flash phone and indeed no signal at all.
Then I ran the 4.14.617.6 RUU and signal again.
I read this in the FAQ:
"Q1: Everytime I flash a custom rom I lose my IMEI, my mobile reception and my phone stops recognizing my sim card. What's the reason for this?
A: You probably flashed a custom rom that is based on firmware 3.35.x although the firmware of your phone is 3.y (with y being any other number than 35). The boot image of 3.35.x based roms is not compatible with your firmware version. The solution of the problem depends on the question whether you are trying to install a Sense-based rom (like ICE or ViperOneM9) or a non-Sense-based rom (like CM): For Sense-based roms you just need to re-flash the stock boot image of your current firmware version."
This seems like my problem except I run RUU directly from HTC. Any idea on what I can do to accept OTA / reflash phone with 4.19.617.1 RUU ?
Thank you!
Was the phone rooted at the time of accepting the ota?.
There is a thread somewhere that explains how to fix the no signal issue on nougat dev edition.
I don't see the point in risking a brick for a beta firmware (dev edition is the beta to carrier versions) which is not necessarily a better firmware.
Also, make sure the rom and firmware you flash IS GSM and NOT CDMA.
Beamed in by telepathy.
@Fritti: The error that is described in the FAQ only appears if you flash a custom rom while using an incompatible firmware. You've used a RUU and are using the stock rom that got flashed by the RUU. That means firmware and rom are matching. Unfortunately, that means that I have no clue why you're facing this issue. There's no reason why you should lose your reception since all GSM versions are more or less the same if you compare their hardware. As far as I know only the LTE bands of the GSM versions differ.
shivadow said:
Was the phone rooted at the time of accepting the ota?.
There is a thread somewhere that explains how to fix the no signal issue on nougat dev edition.
I don't see the point in risking a brick for a beta firmware (dev edition is the beta to carrier versions) which is not necessarily a better firmware.
Also, make sure the rom and firmware you flash IS GSM and NOT CDMA.
Beamed in by telepathy.
Click to expand...
Click to collapse
If the phone was rooted the OTA wouldn't have been installable.
And please stop posting things that aren't true. The dev firmware is not a beta version. It's the US equivalent of the European 401 firmware or the Asian 708, 709 or 710 firmware. Beta firmwares look like this one: 2.10.401.180. They have three numbers behind the last dot. If you compare the 3.x firmware of SKU 401 and 617 you'll notice that 3.35.401.12 and 3.35.617.12 are almost exactly the same except for some contintent-specific tweaks.
It is true that the dev edition is not necessarily better than the 401 one. However, it's up to every single user to choose whether he or she wants to wait until the latest update gets released for his/her SKU or whether they want to convert to the dev edition which receives all updates first (in case of the M9).
Flippy498 said:
@Fritti: The error that is described in the FAQ only appears if you flash a custom rom while using an incompatible firmware. You're used a RUU and are using the stock rom that got flashed by the RUU. That means firmware and rom are matching.
Click to expand...
Click to collapse
Yes, that's what I thought.
Unfortunately, that means that I have no clue why you're facing this issue. There's no reason why you should lose your reception since all GSM versions are more or less the same if you compare their hardware. As far as I know only the LTE bands of the GSM versions differ.
Click to expand...
Click to collapse
Exactly. I don't understand either. Something get's flashed by the 4.19 RUU that messes up the IMEI detection? Is it possible to extract system.img from 4.19 RUU and just flash that to check whether that works?
If the phone was rooted the OTA wouldn't have been installable.
Click to expand...
Click to collapse
Indeed, phone was not rooted. I used 4.14 RUU and then no other flashes/mods.
And to be clear, for now it seems that I can repeat this -- run 4.19 RUU and no signal, run 4.14 RUU and signal again. If there is some radio partition and/or radio data partition that I can dump to check hex diffs I could try.
Fritti said:
Yes, that's what I thought.
Exactly. I don't understand either. Something get's flashed by the 4.19 RUU that messes up the IMEI detection? Is it possible to extract system.img from 4.19 RUU and just flash that to check whether that works?
Indeed, phone was not rooted. I used 4.14 RUU and then no other flashes/mods.
And to be clear, for now it seems that I can repeat this -- run 4.19 RUU and no signal, run 4.14 RUU and signal again. If there is some radio partition and/or radio data partition that I can dump to check hex diffs I could try.
Click to expand...
Click to collapse
You could use the decryption tool that is linked in the readme thread for extracting the system image and the firmware files.
Hi,
I'm facing the same issue - I think. I'm currently using a 4.14 original RUU ROM from HTC without modification.
When I accept the 4.19 OTA I lose connectivity in a most peculiar way: there are still signal bars and the phone confirms a LTE connection.
But there are no more APN options and no data. Also when I place a call the phone claims I'm out of service area.
One other thing I noticed is that the dialer shows a different number format when entering a phone number. With 4.14 I have the normal DUtch standard for dashes and area codes. With 4.19 I have a US standard. Could it be that the phone thinks I'm in the US and would a edit to the build.prop help?
I hope someone has some advice.
Gawain1986 said:
Hi,
I'm facing the same issue - I think. I'm currently using a 4.14 original RUU ROM from HTC without modification.
When I accept the 4.19 OTA I lose connectivity in a most peculiar way: there are still signal bars and the phone confirms a LTE connection.
But there are no more APN options and no data. Also when I place a call the phone claims I'm out of service area.
One other thing I noticed is that the dialer shows a different number format when entering a phone number. With 4.14 I have the normal DUtch standard for dashes and area codes. With 4.19 I have a US standard. Could it be that the phone thinks I'm in the US and would a edit to the build.prop help?
I hope someone has some advice.
Click to expand...
Click to collapse
Yes, that sounds like the same issue. You can actually edit the settings in the phone to disable the US international prefix. However it does not help for the out of service issue.
I have not yet had the time to try and flash only the firmware / recovery / system from 4.19, I will report back once I have tried.
Fritti said:
Yes, that sounds like the same issue. You can actually edit the settings in the phone to disable the US international prefix. However it does not help for the out of service issue.
I have not yet had the time to try and flash only the firmware / recovery / system from 4.19, I will report back once I have tried.
Click to expand...
Click to collapse
I have some news. I took the 4.19 No-Wipe firmware and flashed it by putting it on my SD card as 0PJAIMG.zip. It flashed and now I'm working on the 4.14 ROM with 4.19 firmware. All is working wel, most notibly making calls and using data.
This leads me to believe there is something in the Kernel/ROM of 4.19 that breaks our calling and data.
Does anybody have any other ideas to make 4.19 work?
The plot thickens .
I installed ICE ROM 4.19 after flashing firmware 4.19 and I had the same problem back, out of service area.
So I started comparing the build.prop files in the 4.14 ROM from HTC and the 4.19 ICE ROM. Then I changes a few lines to these values and I was able to call:
ro.ril.hsxpa=4
ro.ril.hsdpa.category=14
ro.ril.hsupa.category=6
ro.aa.rid=115
To get data (and be able to log in to a google account) I did another thing. I used the dialer to call *#*#4636#*#* and set the phone to WCDMA preferred and I had data.
The only thing left is to be able to use LTE/4G but that's for another time, I can finally use my phone on this firmware!
Gawain1986 said:
The plot thickens .
I used the dialer to call *#*#4636#*#* and set the phone to WCDMA preferred and I had data.
The only thing left is to be able to use LTE/4G but that's for another time, I can finally use my phone on this firmware!
Click to expand...
Click to collapse
Now try switching it back to LTE/WCDMA/GSM.
I had the same with S.Rom and after getting it to connect the way you did, switching back to auto gave me 4G again
bonesy said:
Now try switching it back to LTE/WCDMA/GSM.
I had the same with S.Rom and after getting it to connect the way you did, switching back to auto gave me 4G again
Click to expand...
Click to collapse
No such luck for me... As soon as my phone sees LTE, the phone force closes and aftter I have no Data and I'm out of service area again.
So I know this is nearly a necro but I wanted to give an update that I cannot try this anymore -- shortly after the failures started my phone got stuck in a bootloop. This had to be hardware error as it simply started one morning while I did not change anything. The Vodafone shop I brought it to agreed and send my unit in for (warranty!) repairs. I've since got it back with Android 7.0 on version 4.28.401.3, so there is no need for me to switch to dev edition now. I cannot say whether the signal issues were a symptom or a cause for my unit to fail.
Hoping that Gawain1986 has fixed his issues as well!

UK Three stock ROM

Does anyone know where to get hold of the UK stock ROM.
P2a42_S056_161130_uk
Made the rookie mistake of not backing up before change to the stock Row rom.
Could do with this too, the Row rom is proving to be really buggy and unstable despite factory reset. I've read it's difficult to downgrade though?
4GB Super Voice
I would also like a copy of this, I think the stock firmware contained settings for 4G Super Voice which made 4G reception better. - three.co.uk/Discover/network/4G-Supervoice
I am finding myself on HSDPA allot more since going to the ROW ROM.
On the stock Three firmware there were no settings for VOLTE/4G super voice.
I flashed the ROW firmware and it been running really well. No crashes, no bugs and the 4G reception is very good.
There are also now settings inside the network settings for "Enhanced 4G voice" or something along those lines which is VOLTE/Super voice.
However it doesn't appear to work and it still switches to 3G to make calls.
Because the UK is better than the ROW rom? They are the same with the only difference than the stock Three UK rom has a preinstalled bloatware!
My only reason is that my LG urbane on aw 2.0 connected fine with that ROM, But does not seem to the ROW Rom.
If i could get a resolution for that i would be happy, but can't seem to get any other advised than reset both and try again, which has been done a few times.
911-Future_Maker said:
Because the UK is better than the ROW rom? They are the same with the only difference than the stock Three UK rom has a preinstalled bloatware!
Click to expand...
Click to collapse
Which bloatware?
All I found were the 3x Three apps. My Three, Three in Touch and another one which I can't remember (Three suggestions or something).
They can just be uninstalled if you don't want them.
I need this too as my device has to go in for service. Anyone have access to the stock Three UK firmware?
The nougat update.zip file in developer section is an official firmware i was using it for about 2 months untill i rooted. Now i am using the Nougat deodexed version which is also the same rom but with a few tweaks here and their and all bloat removed and i seem to get volte in even more locations now.
sam00561 said:
The nougat update.zip file in developer section is an official firmware i was using it for about 2 months untill i rooted. Now i am using the Nougat deodexed version which is also the same rom but with a few tweaks here and their and all bloat removed and i seem to get volte in even more locations now.
Click to expand...
Click to collapse
Thanks, but the Three UK FW is customised. need this version installed before I send for service.
oh sorry i didnt realise it was for sending in for service what happened?
Actually, I have resolved the issue now but I still would like the FW for the future if anyone has access to it. As for the problem had: I foolishly set the band to USA in the service menu. This made it impossible to make calls or connect to a 2G/3G network. I tried resetting the handset, rolling back to MM, upgrading back to N but nothing resolved the issue until I came across a post earlier today on an old Moto thread. A simple modem erase using ADB resolved the issue. All back to normal now. Phew!
Anybody got a link to this firmware ?

HTC One M8 carrier/signal problem after stock rom install

Hi there.
I've got a SH Htc One M8 from someone. All that i know about the phone is that it had Android 4.4.4 version when i got it. I managed to upgrade the software to 5.1. But I read that Htc One M8 can be upgraded to 6.0 version. I couldn't do it (software is up to date message), so i went to a service and asked then to do it. After i got it back, i saw that when i start the phone, a Sprint logo is showing which was something new. After some time i found here updates to 7.1 (crdroid, aosp or aokp....) and they worked fine. (didn't notice the signal problem). But i love very much Sense Home so i wanted to get back to 6.0 stock version. I didn't knew anything about CID, MID, hboot then... After some reading, i managed to install 6.0 version with CID from Sprint. The problem is that my phone is LTE capable (should work over 4G network) but as i can see, it works only with GSM/UMTS Only (I still don't know if i got these right)... Also, I was traveling from Romania to Holland and in Holland i was able to make phone calls but i wasn't able to use mobile data as i could in Romania. Everything works fine if I insert SIM in another phone from Holland so its not the SIM/Carrier. All settings are ok in the HTC (roaming, data in roaming...) so the phone is ok. I out of ideas. I don't know the original CID and MID. The charger that came with this phone was english. Any ideas?
So what you are saying, is that you can't get LTE (4G), but you aren't sure whether you had 4G on the custom ROMs (CRDroid, AOSP, etc.) or not?
redpoint73 said:
So what you are saying, is that you can't get LTE (4G), but you aren't sure whether you had 4G on the custom ROMs (CRDroid, AOSP, etc.) or not?
Click to expand...
Click to collapse
Well, i wrote a lot of details.... The issue is that i couldnt use mobile internet in other european country. And i dont understand why i cant use LTA/CDMA network mode nowhere even if my phone is capable. Could it be the Sprint OS?
I remember having a similar issue and ended up reverting back to sense os myself
Sent from my KFFOWI using Tapatalk
byonykx said:
Hi there.
I've got a SH Htc One M8 from someone. All that i know about the phone is that it had Android 4.4.4 version when i got it. I managed to upgrade the software to 5.1. But I read that Htc One M8 can be upgraded to 6.0 version. I couldn't do it (software is up to date message), so i went to a service and asked then to do it. After i got it back, i saw that when i start the phone, a Sprint logo is showing which was something new. After some time i found here updates to 7.1 (crdroid, aosp or aokp....) and they worked fine. (didn't notice the signal problem). But i love very much Sense Home so i wanted to get back to 6.0 stock version. I didn't knew anything about CID, MID, hboot then... After some reading, i managed to install 6.0 version with CID from Sprint. The problem is that my phone is LTE capable (should work over 4G network) but as i can see, it works only with GSM/UMTS Only (I still don't know if i got these right)... Also, I was traveling from Romania to Holland and in Holland i was able to make phone calls but i wasn't able to use mobile data as i could in Romania. Everything works fine if I insert SIM in another phone from Holland so its not the SIM/Carrier. All settings are ok in the HTC (roaming, data in roaming...) so the phone is ok. I out of ideas. I don't know the original CID and MID. The charger that came with this phone was english. Any ideas?
Click to expand...
Click to collapse
Try searching for Network Operators, and then create a new APN: T-Mobile US, fast.t-mobile.com, with APN type: default,supl,mms. I deleted and recreated the APN and my mobile data started working again. Creating new seems to work better for me than the default after reset.

Freedom Mobile - Stock RUU - Wifi Calling?

Hello,
I am currently with Freedom Mobile, but my phone was purchased through Rogers, has the open Network Bands to use the Freedom network, and a new P6 Freedom Mobile SIM Card. My phone is also running as HTC_001.
Before modifying my phone and having to re-do everything I may have done in the past:
Can anyone on either Freedom Mobiles network with their stock RUU confirm they have the Wifi Calling option and it works?
To be able to use services of a carrier, like WiFi calling etc, you MUST be using a firmware that came from that carrier. If freedom issue a specific firmware for the m9 you must use it. If they don't and their phones come "network unlocked/debranded", ie using the 401 firmware, then you should be able to access the WiFi etc on any device. Another example is if you want to use tmobile features then you need a tmobile firmware.
So the question you need to find the answer to is "does freedom carrier have a branded firmware for the m9".
You are correct. Based on my research earlier, I came across that same conclusion.
I think the best/only way to test this however, is a) if someone has a latest version of their branded firmware and can check this or b) I get a TWRP restore and install this on my phone (I assume this is possible and not IMEI restricted) or c) I find another way to get to a stock firmware.
I changed my CID back to the Freedom Mobile one and downloaded the stock TWRP backup from the old Canadian Stock ROM thread, but it is either too large or possibly too old and incompatible with my phone.
I had to use ADB commands through computer to restore, and it looked like it would accept. However, the computer was stuck at "unlock phone screen to continue" and TWRP said "MTP enabled."
Those backups are most likely too old. You can try to find a suitable RUU on easy-firmware or you need to contact llabtoofer's RUU service since at the moment there is no freely available RUU for your phone. The links can be found in the FAQ of the ReadMe thread.
Sent from my Motorola XT1572 using XDA Labs
Just a quick update. I ended up aborting this "project" of mine.
Despite using Mac OS, encountering corrupt zip files and other files issues where I would get an 22 RU_HEADER_ERROR, I ended up finding my biggest issue.
My MID was set to OPJA10000, instead of 0PJA10000. This issue caused multiple hours of frustrations. I have now flashed my phone back to stock 4.28.401.3. I will most likely have to reinstall TWRP and restore my previous backup.
On another note, is anyone else unable to find the HTC Mail app in Google Play store? Mine crashes every time I try to reply to emails or create a new one. Google Play Store on the computer shows my M9 is not compatible.
Get rid of Google Chrome. I don't know what's exactly the reason but current chrome versions break the HTC Mail app.
Sent from my HTC One M9 using XDA Labs
Same for me. Not compatible.
Just an update to this.
They released a new version of HTC Mail v10.70.1031252.
Based on quick trials, this has resolved the recent issues regarding HTC Mail and Google Chrome being at the latest version, regarding crashing when creating a new email or replying, but I have not tested it extensively.
I know this should be a new thread with a proper title instead of piggybacking on an old one, so if a mod can create one (or prefers I do), that would be great.

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