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How to downgrade firmware on HTC M7

OP Hakim Zurgany

20th June 2014, 08:16 AM   |  #1  
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Hi ...

I have upgrade the firmware on my HTC One dual sim to work with Kitkat 4.4 , now i want to go back to 4.2 JB . I tried to re flash the rom with 4.2 , i am getting a message says *Mainver old fail* .

Is there any way to downgrade the rom . Details of my HTC as bellow :

Tampred
Unlooked
S-ON
HBOOT 2.29.00
OS 2.37.720.1

Another thing how can i get S-OFF with no OS on my HTC , most of posts regarding S-OFF needs OS .

I appreciate your help

Thanks
20th June 2014, 02:17 PM   |  #2  
yatindroid's Avatar
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You need S Off then you can flash that Rom
Flash TWRP 2.6.3.4 recovery in fastboot
Push custom Rom zip file by adb sideload or USB otg cable
Install custom Rom then use firewater S Off

from HTC One
Last edited by yatindroid; 20th June 2014 at 02:20 PM.
24th June 2014, 10:18 AM   |  #3  
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Quote:
Originally Posted by yatindroid

You need S Off then you can flash that Rom
Flash TWRP 2.6.3.4 recovery in fastboot
Push custom Rom zip file by adb sideload or USB otg cable
Install custom Rom then use firewater S Off

from HTC One

Thanks for help ..

For S-OFF as i know needs operating system to be able to change S-ON to oOFF . But i have no operating system on my HTC .
Now am not able to downgrade the firmware .
24th June 2014, 12:49 PM   |  #4  
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Quote:
Originally Posted by Hakim Zurgany

Thanks for help ..

For S-OFF as i know needs operating system to be able to change S-ON to oOFF . But i have no operating system on my HTC .
Now am not able to downgrade the firmware .

Flashing the ROM is flashing the Operating System. Once you've flashed TWRP recovery and sideloaded the ROM, you will have Android OS with Sense (a Sense ROM is required for S-OFF).
TWRP is the custom recovery where you can install the OS by flashing the ROM
24th June 2014, 02:07 PM   |  #5  
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Quote:
Originally Posted by raghav kapur

Flashing the ROM is flashing the Operating System. Once you've flashed TWRP recovery and sideloaded the ROM, you will have Android OS with Sense (a Sense ROM is required for S-OFF).
TWRP is the custom recovery where you can install the OS by flashing the ROM

I tried to install the ROM and i am getting a meassage says Installing aborted
24th June 2014, 02:21 PM   |  #6  
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Quote:
Originally Posted by yatindroid

You need S Off then you can flash that Rom
Flash TWRP 2.6.3.4 recovery in fastboot
Push custom Rom zip file by adb sideload or USB otg cable
Install custom Rom then use firewater S Off

from HTC One

How can i get S-OFF without having Operating system on my HTC , I tried many time to install the correct rom by sideload but noway i am getting message says Installing aborted .
24th June 2014, 03:58 PM   |  #7  
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Get the custom rom made for dual sim
25th June 2014, 08:26 AM   |  #8  
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Quote:
Originally Posted by SaHiLzZ

Get the custom rom made for dual sim

Could you please help me to get ROM for HTC M7 Dual sim - OS 2.37.720.1?

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