Okay I am on pie. CSA2 or whatever solidres latest ROM is. I'm not liking pie at all. Mainly for design and no V4A support or any dual speaker/ louder volume mods.
Can I downgrade or flash Oreo ROMS while on a PIE ROM? I flashed the twrp flashable stuff after I flashed the rom.
Please any help is great thanks
Flash stock with ODIN using CSC not HOME_CSC, done
I want to retain root tho
this.guy.lol said:
I want to retain root tho
Click to expand...
Click to collapse
You cannot, you'll have to root again later
*Detection* said:
You cannot, you'll have to root again later
Click to expand...
Click to collapse
I got it figured out thx. Was also able to retain root.
this.guy.lol said:
I got it figured out thx. Was also able to retain root.
Click to expand...
Click to collapse
You downgraded from Pie to Oreo and retained root, I'd love to hear how.....
Unless you flashed a pre-rooted ROM, which is obvious you would have root after downgrading that way
*Detection* said:
You downgraded from Pie to Oreo and retained root, I'd love to hear how.....
Unless you flashed a pre-rooted ROM, which is obvious you would have root after downgrading that way
Click to expand...
Click to collapse
Whole point was me wanting to downgrade. Was able. Flashed stock rooted and viola. Now I'm back on pie since 8.0 is trash and Google play ALWAYS FC after 1 day
Just downgraded my S9+ back to Oreo. Pie was terrible, huge battery drain.
HOME_CSC for downgrading?
*Detection* said:
Flash stock with ODIN using CSC not HOME_CSC, done
Click to expand...
Click to collapse
I want to downgrade from Pie to Orie on my Galaxy S9.
So I downloaded the firmware from Sammobile which has both CSC and HOME_CSC
Two questions:
Are there any other things that need to be done on the phone before downgrading like factory reset or something?
I read that HOME_CSC will Flash the firmware without wiping the data. Can I use HOME_CSC for downgrading ? (I haven't rooted my phone)
RCL0000ZK said:
I want to downgrade from Pie to Orie on my Galaxy S9.
So I downloaded the firmware from Sammobile which has both CSC and HOME_CSC
Two questions:
Are there any other things that need to be done on the phone before downgrading like factory reset or something?
I read that HOME_CSC will Flash the firmware without wiping the data. Can I use HOME_CSC for downgrading ? (I haven't rooted my phone)
Click to expand...
Click to collapse
1. No
2. No
Restore backup
Is it possible to restore full backup from SmartSwitch taken on Pie back to Oreo ?
Related
I was wondering if I may run into any problems by doing this.
I know that on an AT&T phone (i747), if you do that, you may lose your modem and needs to be reflashed (you get a null IMEI)
Is it the same on a SGH-T999? I was planning to flash this ROM:
http://www.sammobile.com/firmwares/3/?download=26636
Thanks
There is no 4.4.2 to downgrade from for the T999.
If you just have a 4.4.2 Rom, you don't need to do anything.
The firmware you linked is the latest available so you can flash it regardless of what you have now.
There is no 4.4.2 update for the T999 so yes you can flash it but it is not a ROM, it is firmware, please do not confuse these two they are very different!
Yeah... I'm afraid I am confused. What I did was to flash this:
http://forum.xda-developers.com/showthread.php?t=2690947
Isn't that a ROM?
However I would like to go back to 4.3, so I was just wondering if I could have any problems.
Sorry for the noob questions. I think it was clear to me, but I'm afraid it's not...
Thanks
Yes that is a rom, what you linked to in the first post is firmware which contains more than just the system and that is where you run into problems when downgrading
serio22 said:
Yes that is a rom, what you linked to in the first post is firmware which contains more than just the system and that is where you run into problems when downgrading
Click to expand...
Click to collapse
So if I'm on 4.4.4 right now, is there a way to go back to 4.3?
_LEM_ said:
So if I'm on 4.4.4 right now, is there a way to go back to 4.3?
Click to expand...
Click to collapse
Yes, flash the link you provided in the first post or flash a 4.3 rom.. Understand this, flashing a rom will not determine if you can downgrade or not, flashing firmware will. Since there is no 4.4 firmware for the T999 you can still flash the 4.3 firmware. If there was a 4.4 firmware and you took the OTA or updated via Odin then the only thing you could do is flash a 4.3 rom, firmware will not be an option
Edit: oh and btw I accidently pressed the thanks button so you got a free one
serio22 said:
Yes, flash the link you provided in the first post or flash a 4.3 rom.. Understand this, flashing a rom will not determine if you can downgrade or not, flashing firmware will. Since there is no 4.4 firmware for the T999 you can still flash the 4.3 firmware. If there was a 4.4 firmware and you took the OTA or updated via Odin then the only thing you could do is flash a 4.3 rom, firmware will not be an option
Edit: oh and btw I accidently pressed the thanks button so you got a free one
Click to expand...
Click to collapse
Thanks. I understand better now. I have always been kind of confused between ROMs and firmwares.
PS: I triple thanked you.
I am trying to upgrade an S3 from an older kit kat aosp rom to a 5.0+ rom. The phone is still on the UCDMG2 bootloader/baseband combo. I kept it on that version to keep my unlocked bootloader and not worry about all this e-fuse stuff going on.
So here is the problem. 5.0 roms flash ok, but say I have no signal. I am able to make phone calls and send text messages, but I have no data. Is there a modem I can flash that will work on 5.0+ roms with the old bootloader? I have been sifting through the various modem/bootloader threads with no luck. Any suggestions on how to obtain data?
condor97 said:
I am trying to upgrade an S3 from an older kit kat aosp rom to a 5.0+ rom. The phone is still on the UCDMG2 bootloader/baseband combo. I kept it on that version to keep my unlocked bootloader and not worry about all this e-fuse stuff going on.
So here is the problem. 5.0 roms flash ok, but say I have no signal. I am able to make phone calls and send text messages, but I have no data. Is there a modem I can flash that will work on 5.0+ roms with the old bootloader? I have been sifting through the various modem/bootloader threads with no luck. Any suggestions on how to obtain data?
Click to expand...
Click to collapse
as i understand it , and could be completely wrong , but bootloaders and modems should always match. have you tried a different kernel ?
http://forum.xda-developers.com/showthread.php?t=2390147
quantum was an excellent kernel when i had my S3. also i believe ktoonsez makes a lollipop kernel but i couldnt find the link.
as always , backupbackupbackup and readreadread.
"all i can really do , is stay out of my own way and let the will of heaven be done"
mrrocketdog said:
as i understand it , and could be completely wrong , but bootloaders and modems should always match. have you tried a different kernel ?
http://forum.xda-developers.com/showthread.php?t=2390147
quantum was an excellent kernel when i had my S3. also i believe ktoonsez makes a lollipop kernel but i couldnt find the link.
as always , backupbackupbackup and readreadread.
"all i can really do , is stay out of my own way and let the will of heaven be done"
Click to expand...
Click to collapse
Thank you. I have not tried a kernel. Do you think that would help with connectivity?
I was wondering about the boot loader thing. Perhaps there is no way to avoid the upgrade.
Sent from my SAMSUNG-SGH-I747 using XDA Premium 4 mobile app
The bootloaders on the i747 and i747m are not locked.
audit13 said:
The bootloaders on the i747 and i747m are not locked.
Click to expand...
Click to collapse
Ok good to know. So once you upgrade, you don't have to unlock the bootloader to flash recovery/rom?
Edit: sorry, dumb question.
After upgrading to the mjb or newer bootloader, you cannot downgrade the bootloader to an older version. Also, the upgraded bootloader will remain unlocked so you can easily flash a custom recovery in Odin.
audit13 said:
After upgrading to the mjb or newer bootloader, you cannot downgrade the bootloader to an older version. Also, the upgraded bootloader will remain unlocked so you can easily flash a custom recovery in Odin.
Click to expand...
Click to collapse
Can you point me towards the best way to upgrade? I have found some flashable zips, but would prefer to do it through Odin.
I think the safest way to get to the newest bootloader and modem would be to use the 4.1.1 firmware on sammobile.com to flash back to stock in Odin. Once you set up the ROM on your phone, run the OTA updates until you have the latest modem and bootloader. It the slowest way to do but, in my opinion, the safest.
If you phone is not sim unlocked, you can use the free method to permanently unlock the phone while you are on stock 4.1.1.
Once you are on the latest ROM, you could install a custom recovery, create a nandroid backup of the stock ROM, and then flash a custom ROM.
audit13 said:
I think the safest way to get to the newest bootloader and modem would be to use the 4.1.1 firmware on sammobile.com to flash back to stock in Odin. Once you set up the ROM on your phone, run the OTA updates until you have the latest modem and bootloader. It the slowest way to do but, in my opinion, the safest.
Once you are on the latest ROM, you could install a custom recovery, create a nandroid backup of the stock ROM, and then flash a custom ROM.
Click to expand...
Click to collapse
Ok thanks!
condor97 said:
Ok thanks!
Click to expand...
Click to collapse
Is the phone sim unlocked?
audit13 said:
Is the phone sim unlocked?
Click to expand...
Click to collapse
No, it is not. I don't think Lol.
Sent from my SAMSUNG-SGH-I747 using XDA Premium 4 mobile app
You should run through the free unlock method after you flash back to stock. Even if the phone is already unlocked, it won't re lock.
audit13 said:
You should run through the free unlock method after you flash back to stock. Even if the phone is already unlocked, it won't re lock.
Click to expand...
Click to collapse
That is a good idea. Thanks!
I have MM stock, but the hotspot now requires a reboot to get it working which is kinda a pain. Can I use this method to flash back to Lollipop? I saw a thread saying you cannot flash anything older than 5.1.1. That was an older thread, and basically he was told he can't flash 5.0.2 back on his S6 because he already had 5.1.1. Is there anything that will break if I put 5.1.1 after taking OTA 6.0.1?
thanks
Not sure but I am going to flash 5.1.1 now and see what happens, I loaded MM on my phone and it sucks down my battery so fast, I lost 20 percent in like 15 minutes, I have nothing on the phone but the OS so I am going back somehow will let you know. I go all day on battery on 5.1.1 so MM can wait.
<Back after flashing with odin>
Okay this worked but I set in odin to "NAND Erase ALL" and it worked I am back on 5.1.1
did either of you roll back to 5.1.1 without having to root? I don't want to void the rest of my warranty.
jerry43812 said:
did either of you roll back to 5.1.1 without having to root? I don't want to void the rest of my warranty.
Click to expand...
Click to collapse
yes, odin the OL1 tar file, reboot to stock recovery, factory reset and you could boot into 5.1.1 without root.
yaibakt said:
yes, odin the OL1 tar file, reboot to stock recovery, factory reset and you could boot into 5.1.1 without root.
Click to expand...
Click to collapse
Thanks for your reply.
aw darn, guess I am stuck factory resetting for now. Is there any way I can stop sprint from forcing this update again?
Also will it keep the newest radio if I flash the tar back to 5.1.1.?
i remember there was an option in system>update that prevent the phone from updating itself. im on MM 6.0.1 now so i cant have a ss.
when you odin the tar 5.1.1, the radio change back to 5.1.1 as well (you ask about baseband version? if im not wrong).
yaibakt said:
i remember there was an option in system>update that prevent the phone from updating itself. im on MM 6.0.1 now so i cant have a ss.
when you odin the tar 5.1.1, the radio change back to 5.1.1 as well (you ask about baseband version? if im not wrong).
Click to expand...
Click to collapse
Settings -> System Updates. Set "Download updates automatically" to the Off position.
Hello,
I recently sideloaded the new OneUI beta ( https://www.xda-developers.com/install-one-ui-beta-samsung-galaxy-s9-galaxy-s9-plus/ ) and would like to know how I could reverse this process.
MehNameIsFrog said:
Hello,
I recently sideloaded the new OneUI beta ( https://www.xda-developers.com/install-one-ui-beta-samsung-galaxy-s9-galaxy-s9-plus/ ) and would like to know how I could reverse this process.
Click to expand...
Click to collapse
Flash back to the Oreo firmware with ODIN... guides are all over XDA and sammobile
Since it's sideloaded I'm not sure if it will work but the latest version of Smart Switch for Windows has an option to roll back the OTA's to Oreo.
I am in the same position as the op. I have the rom I need to flash. Should I flash all components including bl, csc, ap etc or just ap? Smart Switch doesn't allow me to roll back. Cheers.
pjam said:
I am in the same position as the op. I have the rom I need to flash. Should I flash all components including bl, csc, ap etc or just ap? Smart Switch doesn't allow me to roll back. Cheers.
Click to expand...
Click to collapse
All, flash the same way you would any time, and use CSC not HOME_CSC
Hi all. Is it possible to roll back using smart switch for Mac? I don't have access to a Windows PC, so if it's not possible to roll back using the Mac version, is there any other way apart from Odin?
I have successfully gone back to Oreo. UK rom from updato. Odin 3.13.1 Flashed bl, ap, cp and csc (not csc home). I had the latest smart switch installed but no option to go back to Oreo in it. Thanks for advice on here.
pjam said:
I have successfully gone back to Oreo. UK rom from updato. Odin 3.12. Flashed ap, cs and csc (not csc home). I had the latest smart switch installed but no option to go back to Oreo in it. Thanks for advice on here.
Click to expand...
Click to collapse
ODIN 3.12?
ODIN 3.13.1 was needed for Oreo
Oops my bad. 3.13.1
You can with odin. Tested by me and many others.
Hi,
I am running stock Android 9.0 firmware on my Samsung Galaxy S9 (SM-G950F) with TWRP recovery and Magisk.
I want to update my firmware to a newer stock Android 9.0 firmware by flashing it as update.zip in TWRP, without formatting data.
I have downloaded the ODIN flashable firmware from sammobile, but this is not a TWRP flashable zip.
Where do I get an update.zip or how can I genereate it?
Thanks,
Stefan
Stefan6183 said:
Hi,
I am running stock Android 9.0 firmware on my Samsung Galaxy S9 (SM-G950F) with TWRP recovery and Magisk.
I want to update my firmware to a newer stock Android 9.0 firmware by flashing it as update.zip in TWRP, without formatting data.
I have downloaded the ODIN flashable firmware from sammobile, but this is not a TWRP flashable zip.
Where do I get an update.zip or how can I generate it?
Thanks,
Stefan
Click to expand...
Click to collapse
uhm... wut? You cant do what youre asking. Youll have to get a compiled ROM and flash it. I dont have a rootable version of the S9, so im not familiar with the ROMs that are available, but are there not any 9.0 ROMs you can flash?
Actually, I would also switch to an already compiled ROM, if it wold be possible to do without wiping the data partition. But all ROMs have this as a prerequisite, if you switch to them from a stock ROM.
I will probably try to flash the stock firmware via ODIN with Home_CSC, although this is riskier than flashing the firmware via TWRP.
A better way, as I understand would be to get a Samsung OTA firmware file. Since https://firmware.science is down, does someone know an alternative?
Stefan6183 said:
Actually, I would also switch to an already compiled ROM, if it wold be possible to do without wiping the data partition. But all ROMs have this as a prerequisite, if you switch to them from a stock ROM.
I will probably try to flash the stock firmware via ODIN with Home_CSC, although this is riskier than flashing the firmware via TWRP.
A better way, as I understand would be to get a Samsung OTA firmware file. Since https://firmware.science is down, does someone know an alternative?
Click to expand...
Click to collapse
you dont flash firmware in TWRP, just ROMs. And if you flash a deodexed stock ROM that has the same base as yours, you shouldnt need to wipe
Flashing a deodexed stock ROM sounds good. By same base do you mean the baseband version (G950FXXU4CRKB in my case) or the build number (R16NW.G950FXXS4CRLB)?
Stefan6183 said:
Flashing a deodexed stock ROM sounds good. By same base do you mean the baseband version (G950FXXU4CRKB in my case) or the build number (R16NW.G950FXXS4CRLB)?
Click to expand...
Click to collapse
baseband