Unrooted HTC M8 Stock Converted to GPE - Won't OTA and Phone Signal Issues

[NYTWBEN]

Hi All,
I did a Flash conversion from Stock HTC Sense to GPE on my Taiwan Purchased unlocked unrooted HTC M8. After reboot the phone will not do the OTA even thought it reminds me there is one and the signal strength has been really bad (goes to 0 all the time where it previously was 100% under sense).

These were the steps I followed:
1. Installed TWRP
2. Wiped with TWRP
3. With TWRP i flashed the GPE Rom : MRA58k.h6 release keys - Please not i tried other versions but they all had mid5 failures.
4. rebooted without the root.

After rebooting the phone is fine except the signal strength goes to 0 all the time and i receive the notification for :
system update: "Android M Upgrade for user/release-keys... The message goes on to say, "This is an operating system upgrade for MRA58k.H8. This software will upgrade your device to Android version M including December Security Updates....

After it prepared to install it reboots to twrp. I can find the update in the cache but it fails to install.

I would be happy with either GPE or Sense. Any advice you can offer would be great. Thanks

 

[ckpv5]

Post fastboot getvar all result (without serial & imei no.) then we'll see what actually you need to do

 

[NYTWBEN]

Here you go:
C:\adb>fastboot getvar all
(bootloader) version: 0.5
(bootloader) version-bootloader: 3.19.0.0000
(bootloader) version-baseband: 1.29.214500021.24_2G
(bootloader) version-cpld: None
(bootloader) version-microp: None
(bootloader) version-main: 6.12.709.4
(bootloader) version-misc: PVT SHIP S-ON
(bootloader) serialno: *************
(bootloader) imei: *************
(bootloader) imei2: Not Support
(bootloader) meid: 00000000000000
(bootloader) product: m8_ul
(bootloader) platform: hTCBmsm8974
(bootloader) modelid: 0P6B11000
(bootloader) cidnum: HTC__621
(bootloader) battery-status: good
(bootloader) battery-voltage: 0mV
(bootloader) partition-layout: Generic
(bootloader) security: on
(bootloader) build-mode: SHIP
(bootloader) boot-mode: FASTBOOT
(bootloader) commitno-bootloader: 76df2b54
(bootloader) hbootpreupdate: 11
(bootloader) gencheckpt: 0
all: Done!
finished. total time: 0.047s

 

[ckpv5]

Here you go:

(bootloader) version-bootloader: 3.19.0.0000
(bootloader) version-baseband: 1.29.214500021.24_2G
(bootloader) version-main: 6.12.709.4
(bootloader) version-misc: PVT SHIP S-ON
(bootloader) modelid: 0P6B11000
(bootloader) cidnum: HTC__621
(bootloader) security: on

You getvar show that there was never a conversion done. What you did only running a GPE ROM on your device. You can't do conversion on a S-On device.

Since you want to run a GPE ROM .. you should run the latest GPE which is Marshmallow same as your getvar.

You can try what I'm running now - http://forum.xda-developers.com/htc...om-htc-one-m8-gpe-stock-custom-aroma-t3254245

or just search and try other GPE with tag MRA85K.H8 in Development section - there are three of them if I'm not wrong

 

[NYTWBEN]

You getvar show that there was never a conversion done. What you did only running a GPE ROM on your device. You can't do conversion on a S-On device.

Since you want to run a GPE ROM .. you should run the latest GPE which is Marshmallow same as your getvar.

You can try what I'm running now - http://forum.xda-developers.com/htc...om-htc-one-m8-gpe-stock-custom-aroma-t3254245

or just search and try other GPE with tag MRA85K.H8 in Development section - there are three of them if I'm not wrong

I tried to flash the Aroma Rom from your link and unfortunately got the following failure message:
C:\adb>fastboot flash zip firmware.zip
target reported max download size of 1826418688 bytes
sending 'zip' (733155 KB)...
OKAY [ 27.528s]
writing 'zip'...
(bootloader) zip header checking...
(bootloader) zip info parsing...
FAILED (remote: 24 parsing android-info fail)
finished. total time: 28.514s

 

[ckpv5]

You don't need to all those firmware flashing ... remember your device is S-On ?
Won't work for you

Have you ever install a custom ROM before ?

Install TWRP recovery
download the ROM zip
put the ROM zip on your sdcard (either internal or external, your choice)
boot to recovery
select install and browse the ROM zip
install ROM
done... reboot

 

[NYTWBEN]

This is my first time playing with Roms -- Hopefully i will get better over time.

I tried what you said but something NEW is going wrong.

I copied the files to the internal sd card and when i look for them in TWRP they are gone. I rebooted and looked for the files from the file explorer on my computer and they are there now. Also, the files are visible from the ES file explorer app i use. Previously when flashed the rom i was able to copy files onto my internal SD from my desktop.

 

[ckpv5]

I don't quite understand what you mean .. but I guess you can see the ROM zip in your internal storage when you connect to PC.

Check which version of TWRP that you installed. You need to use TWRP 2.8.7.0
When in recovery, check mount - enable MTP, you can see the file on PC. If yes, your TWRP should see your ROM zip when select Install menu - make sure the storage is internal storage/sdcard

 

[NYTWBEN]

I don't quite understand what you mean .. but I guess you can see the ROM zip in your internal storage when you connect to PC.

Check which version of TWRP that you installed. You need to use TWRP 2.8.7.0
When in recovery, check mount - enable MTP, you can see the file on PC. If yes, your TWRP should see your ROM zip when select Install menu - make sure the storage is internal storage/sdcard

Ok, I had the removable SD card shared as part of of the internal memory (not sure how to describe that). After I separated the removable sd I was able to copy the files over without a problem and the install worked smoothly. Also, the signal strength seems to have improved a bit. It still seems to pop down to no signal at all sometimes but much less frequently.

Thanks for your help!

 

[NYTWBEN]

Ok, So the signal LTE issue is really bad.

With the stock sense rom i was always at full LTE signal now the phone shows either no signal or very low.

Is there an easy way to flash the HTC Sense Rom back on with the phone in its current state (unrooted converted to GPE via TWRP Flash)? I have seen some threads but they all are talking about rooted phones.

 

[NYTWBEN]

Thanks.

 

[TeckniX]

With a proper s-off device what's the proper setting/command to get the OTA updates to work?

 

[TeckniX]

I had previously modified the CID without any issue - Then via searching, I realized I hadn't changed the MID.
I did that, to match the GPE one, and well I now broke it - Phone wouldn't boot. Did a quick side-load which apparently wiped my entire phone and failed.
So now I have no phone :[ back to the grind with a clean slate I guess

 

[ckpv5]

I had previously modified the CID without any issue - Then via searching, I realized I hadn't changed the MID.
I did that, to match the GPE one, and well I now broke it - Phone wouldn't boot. Did a quick side-load which apparently wiped my entire phone and failed.
So now I have no phone :[ back to the grind with a clean slate I guess

Post fastboot getvar all (without serial & imei no.) .. maybe something can be done to your device.

 

[redpoint73]

I had previously modified the CID without any issue - Then via searching, I realized I hadn't changed the MID.
I did that, to match the GPE one, and well I now broke it - Phone wouldn't boot. Did a quick side-load which apparently wiped my entire phone and failed.

I'm confused about your description. What exactly is the state of the phone (screen won't turn on? Any charge LED?), and did it get that way immediately after issuing the adb command to change the MID? What does this have to do with sideload?

Where did you get the command to change MID, and did you copy/paste it exactly?

 

[pettumuyal]

How did he convert an "S-ON" phone from stock SENSE to GPE ? Correct me if I am wrong, with Security ON,you cannot write some partitions of system (obviously sense and gpe uses different firmwares and partitions), I think he should flash SENSE or GPE RUU to fix all problems right?