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To perform a completely clean installation of a custom ROM, boot into TWRP and wipe system, cache, data.
I have always flashed performed a complete wipe, flash the ROM, flash the kernel, and reboot the phone and set it up to make sure everything works. I then flash gapps.
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If you want a completely reset device then you need to flash the stock firmware via odin twice with a factory reset via the stock recovery in between flashes. This doesn't reset the flash counter, just everything else.
If you want to reflash a custom rom after that then you root via chainfire, install twrp and flash Los via twrp.
If you want to flash a kernel or anything else you can flash via twrp whenever you want but make sure they are compatible.
If you want to use magisk then you will need to refer to the installation instructions for both magisk and los. It will most likely involve uninstalling supersu and its binaries.
If you have issues with cell signal then you can look at flashing other modems. If no problems leave it alone.
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Related
Hi,
Currently using latest firmware KI3 with root.
I'm able to use CWM, backup, install zips, everything.
However, if i install a ROM trough a ZIP, i get a boot loop.
Only way to get back the phone, it's to install via ODIN with latest KI3.
Even tried with Litening Rom, and got the boot loop.
Any ideas ?
I was very keen to return to CM7.
Tx in advance.
Did you exactly what's mentioned here?
Install via ClockworkMod (do not use ROMManager for initial install):
Make sure you're running a rooted device.
Root your device and install ClockworkMod Recovery (http://forum.xda-developers.com/show....php?t=1118693)
Do a Nandroid backup!
WIPE (wipe data/factory reset + wipe cache partition) - do it for real.
Install the ROM from internal sdcard using ClockworkMod Recovery.
Do not reboot! We mean it - do nothing except choose zip and continue next step (if you come back to us with permission issues in install, we will know you did not read the directions and will call you an idiot). If it just plain hangs, reboot directly back into ClockworkMod recovery and continue at the next step.
Install the ROM from internal sdcard using ClockworkMod Recovery, again (due to a bug in the install).
Reboot
Install the Google Addon through ROMManager which is easiest, but you can
download the gapps.zip and install via ClockworkMod recovery instead.
Click to expand...
Click to collapse
Did you try flashing a old stock ROM like KH3, root it then try from this base?
I went from Villain ROM 2.3.5 to CyanogenMOD without any problems.
It's essential that you flash CyanogenMOD !TWICE! in a row when you're coming from a stock ROM.
Thanks.
Gonna check, as soon as i'm @ 127.0.0.1
Same behaviour, back to boot loop.
Tanx anyway!
I had a similar problem so here goes my help.
Cf root kernel uses a modified version of CWM that isn't compatible with CM7 or something like that. So what I did was flash this kernel http://forum.xda-developers.com/showthread.php?t=1118693. Get the kernel with CWM 5.x.y.z With that I got a compatible version of CWM and from there I flashed CM7. It is important that you do a full wipe, wipe cache, wipe dalvik cache, format \system, everything so you don't get any trouble. THen you flash the CM7 zip file, when tha t is done, flash the zip again for a second time (don't reboot just do it after the first flash). After that reboot. That worked for me at least.
A tip: If you can't reboot your phone and you have no ROM zip file to flash via CWM you can mount usb storage from CWM for putting the ROM in sd card and flash with CWM. That way you don't have to use ODIN to recover.
Tanx Tomas.
Tried with CWM 5.x.y.z and upon "WIPE" always got an error for mounting partitions.
Could't mount CACHE, SDCARD .....
Tx anyway.
Back to ODIN, back to stock 2.3.5
PS : I have to get a JIG to reset ...
Do i need to delete dalvik cache when installing stock rom?.. i just want to install fresh stock rom on my phone to start out clean. (it already has stock though)
if you are flashing with Odin then no, just did clean install myself today, wiped evening apart from external sd....phone probably won't boot after flash, so if that happens just boot into 3e recovery and do factory reset, reboot and all will be good.
XXBLG8 seems a good ics base to use. Feel free to pm me if you are unsure of anything
Hi, newbie here. I have trouble with wifi. My phone is Xperia P
I installed aospa rom, at the beginning everything was fine but few hours later I couldnt turn wifi on. I didint know what to do, so I just factory reset the phone. Same thing happened.
Then I installed Blur Line (CM 11) rom, same thing happened again.
On advanced setting it says Mac adress unavailable (idk if this is related with problem)
I searched google and xda for possible solutions.
solution 1 is installing sqlite editor and changing "wifi_display_on" value to 0
this didnt work because it was already 0
solution 2: settings/wi-fi/advanced/wi-fi region code
this didnt work too. I select Turkey (I live in Turkey) but whenever I exit settings and turn back none of the region is selected.
solution 3: copy WCNSS_qcom_wlan_factory_nv.bin file to somewhere
it is on motorola atrix hd thread, so idk if this can work for my phone too. I downloaded it but havent tried yet
Do you think it can work for my phone, or is there any "wifi fix file" for Xperia P
What sould I do now? Should I install another rom (slimkat, pacman, miui v5) or is there any solution for fixing wifi?
Thanks for replies.
Describe the steps you followed to install the ROM.
hliasant said:
Describe the steps you followed to install the ROM.
Click to expand...
Click to collapse
My phone was on stock rom, rooted and cwm installed.
First I unlock bootloader via flashtool, then I flash the boot.img via flashtool
I flash the rom and gapps with cwm (wipe cache, dalvik, factory reset) but then I flash the rom with twrp (wipe data, cache etc) again.
i dont know if I wipe some important data
formerly I installed some stock base roms via cwm, and I didnt wipe anything extra this time
I backuped TA partition before unlock bootloader. Is wifi work if I relock bootloader and flash stock rom & kernel
Fenomenon said:
My phone was on stock rom, rooted and cwm installed.
First I unlock bootloader via flashtool, then I flash the boot.img via flashtool
I flash the rom and gapps with cwm (wipe cache, dalvik, factory reset) but then I flash the rom with twrp (wipe data, cache etc) again.
i dont know if I wipe some important data
formerly I installed some stock base roms via cwm, and I didnt wipe anything extra this time
I backuped TA partition before unlock bootloader. Is wifi work if I relock bootloader and flash stock rom & kernel
Click to expand...
Click to collapse
Seems like some kernel modules are missing.
This is a sure method-procedure that I follow for flashing a new ROM on my and on my friends' XP.
1)flash stock JB firmware(ftf) using flashtool.
2)flash boot.img from the ROM you want to flash, using flashtool.
3)reboot in twrp using power button during boot up.
4)wipe data, cache, dalvik.
5)flash ROM + gapps and reboot.
hliasant said:
Seems like some kernel modules are missing.
This is a sure method-procedure that I follow for flashing a new ROM on my and on my friends' XP.
1)flash stock JB firmware(ftf) using flashtool.
2)flash boot.img from the ROM you want to flash, using flashtool.
3)reboot in twrp using power button during boot up.
4)wipe data, cache, dalvik.
5)flash ROM + gapps and reboot.
Click to expand...
Click to collapse
thanks for help :good:
I install slimkat 8.8 and wifi works fine atm :laugh:
Instructions
Make sure that your SM-G850W has the Lollipop bootloader and modem (The last installed stock ROM must be 5.0.2).
Flash TWRP recovery via Odin.
Boot to TWRP recovery (Vol UP + Home + Power).
Optional: Do nandroid backup
Wipe data / Factory Reset
Install the ROM (CM zip).
Install the Google Apps.
After you wipe the data
how exactly do you install the ROM (CM zip))
Do i do it via Odin?
Just need clarification on that step...
After you install twrp, you can make backups and also install software.
As suggested you better make a backup in TWRP it's called a nandroid backup. After that you have to do a factory reset, thats the wipe in TWRP. Then you can go to the install button, and choose the rom.zip. For Cyanogenmod you also need to install Gapps, because its not included in ROM.
But to be clear: everything is in TWRP.
Hell guys!
I recently started flashing custom roms found in the rom section and I'm currently on latest pixel experience Build.
Next I want to flash custom kernels and see how it goes but since I'm fairly new to all this I want to make sure I'm doing it right.
1. So what's the safest way to switch different kernels while being on custom rom such as PE, lineage etc?
2. What's the procedure for flashing these custom kernels through twrp?
3. How to take backup of the current stock kernel that comes with this (PE) Rom and restore safely in case of bugs without losing previous apps/settings/data or causing bootloops, soft bricks etc?
Thank you for your time.
before you flash anything backup your Rom first
(by Boot data system vendor in custom recovery)
Do clean install by Wipe dalvik cache and cache and flash the kernel
Backup:
Backup /boot partition using twrp, this contains the currently installed kernel and ramdisk.
Installation:
Flash the kernel zip, no need to wipe anything.
Restore:
Restore the boot partition you made earlier in twrp.
If you don't have a backup, you can dirty flash your currently installed ROM, this will restore the roms stock kernel and also uninstall magisk which you can reflash.