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[Completed] Soft-bricked my ZenFone 6, proceeded to screw up the recovery too. Requesting help.

Hello. First of all, let me just say I'm glad I was pointed to this place by a friend, and, while I know asking for help with your first post is simply bad form, I think you guys are my last hope for fixing this phone, so I'll just go ahead an explain.
Alright.
So, yesterday I decided to root my ZenFone 6 (A600CG) for the first time after about 9 months of use. Up until then, I didn't really have any interest in rooting or even unlocking the bootloader, or any knowledge of how to do anything with it at all.
So, I did a quick google search, and found this:
w w w.asus-zenfone.com/2015/05/one-click-root-for-zenfone-series.html
The whole thing felt a bit dodgy, what with the all the bat files and stuff, but I decided to go ahead anyway. And it worked just fine, my phone was rooted. Hooray. Time to go and install stuff I couldn't before, right?
That's when this came in:
w w w.asus-zenfone.com/2015/10/how-to-add-zenmotion-to-your-zenfone.html
So, I did that. What I didn't realize, however, was that my bootloader was still locked. And so I followed the instructions detailed on that tutorial and all, seemed to work. Except when my phone rebooted, all that showed up on the display was a USB symbol. It wouldn't boot. I swear, I nearly shat my pants at that moment. So, I set out to fix that.
I couldn't really find ANY decent tutorial on how to undo the soft-brick for the ZenFone 6 specifically, so what I did first was trying to sideload each and every single rom that ASUS has for the ZenFone 6 on their support page. None of them worked, all of them showed the "failed to verify whole-file signature" error when I tried to have them sideloaded with ADB. So, I followed these:
zenfone-blog.blogspot.com.br/2015/06/guide-how-to-unbrick-asus-zenfone-4-5-6.html
w w w.windroidica.in/2015/07/how-to-revert-back-to-stock.html
First the former, didn't work because the rom wouldn't sideload, then the latter. Now, I'm aware the latter tutorial deals with the ZenFone 5 (for some reason, everything out there regarding these devices is either for the ZenFone 2 or 5, almost nothing can be found regarding the 6), but I figured the two are similar enough that a ZenFone 5 firmware would most likely work on the ZenFone 6, since they're basically the same thing, except for the camera and display size. Well, I was wrong. It kinda worked, though, it was stuck on a bootloop at that point.
So, with my phone stuck on bootloop, instead of coming here for help before, this dumbass here tried to flash the recovery for a custom one (TWRP, in this case). Except the bootloader was locked. So, I tried flashing dnx and ifwi with a bootloader toolkit I found here on XDA-Dev. I don't even know what went wrong, but the bootloader is still apparently locked, fastboot won't flash TWRP on top of the current default recovery, and now the phone is soft-bricked again, with that USB logo appearing whenever it turn the phone on.
Is there any chance at all I can solve this, or should I just throw this in the trash and buy a new one? I'd rather solve it, as I quite like this device, even if ASUS is terrible with their updates.
PS: Sorry about the links, but I feel as though they're necessary to better explain the situation.
EDIT: Seems like the bootloop is back now.
EDIT 2: Finally found a working firmware (2.20.40.11)! Sideloaded it, but I got a message about installing the latest 4.3 version first. I'm assuming it refers to the Android version, and now I'm really not sure whether it worked or not, as the phone still seems to be on a bootloop. Confusing as hell.
EDIT 3: It wasn't even a bootloop, just a longer than normal boot! My phone is running again! Lost all my data, contacts, everything. It's as if I had bought it today. I'm happy, though. Feel free to lock this thread, the issue has been resolved!

Issue resolved, thread closed.

oneplus one bootloop, many searches, no solution

I still have bootloop issue on my oneplus one, running on Cyanogen.
First, I know nothing about developping, I have been self teaching myself over the past 2 days to solve this frustrating bootlopp issue on my oneplus one.
2 days ago I didn't know what was TWRP and adb and fastboot, I have downloaded Android SDK for developpers, Java plateform in between because it was (uselessly) needed, I have flashed images (TWRP), not knowing what flashing was about and not knowing TWRP, randomly following up scattered (and uncomplete) tutorials of forumers writing mysterious and random terms of totally unknown notions for me as a normal user.
This been written, please be clear in your answers, honestly please, maybe some readers may understand how frustrating it can be to read so called tutorials in vocabulary that only developpers can get.
So here what I did so far
1) flash TWRP with fastboot
2) Then I tried entering "make_ext4fs /dev/block/mmcblk0p15". Many posts refer to this as the ultimate solution. (I cannot post link since I am new forumer)
a) First from command, shift+right click in my "adb" folder:
"adb shell" + "make_ext4fs /dev/block/mmcblk0p15"
Didn't work
b)Then I retried in TWRP directly on my phone, going in Advanced>Terminal Command>Select, then type: make_ext4fs /dev/block/mmcblk0p15
Didin't work
3) update the system
Also, I have an update available in my android system, hoping that it could solve the bootloop. When I update, it reboots and goes to TWRP boot mode, is that normal ? If yes what am I suppose to do ? Can an update system actually solve this bootloop issue ?
So far it doesn't solve my bootlopp issue.
What do you think ? What else can we do ?

Have you tried installing (flashing) custom firmware? Go to Cyanogenmod.org, or google "Cyanogenmod 12.1 for oneplusone download", look around, download the custom firmware (Rom) should be a .zip file, move it to your phone, then install it. I can help you more if you need.
Sent from my iPhone using Tapatalk

Hey, thanks for your answer. I ll try later this week and I ll keep you informed.
Just one detail: when flashing cyanogen 12.1, does it mean I completely wipe out my phone to reinstall the rom? (As far as I understand it's like formating a computer and reinstalling window )

there after an cyanigen update. I tried and wiped out my data and so far It works. Very simple, no more than 5min (I spent hours on this problem up to now)
For other readers try this.
If not well try MeowDude advice.
Special note : it looks like update doesn't work though, when it reboots I end up on TWRP and get a message at the end of the update "file md5 not found ". A future problem oncoming? Hope not
So far everything works anyway.
And thanks to MeiwDude

Getting root on the BNTV460 is a pain....

Just picked this up for the significant other's bday. Bootloader unlocked it with the instructions from @ipdev, and can report that method works. Can't get root.
Does anyone have this device and have achieved root? I'm a bit perplexed, even flashing a patched boot img isn't getting Magisk on there the way that it should.
Thanks!
Important to Note that the 460 has the exact same EVERYTHING as the 450, including build #s. They just gave it double the internal space is the only difference I've seen.
UPDATE: Just bricked the lil' guy. Since the device is encrypted with every system file having a -sign behind it, I went and frolicked around trying to get Magisk on there via ADB. The only way to do that was to patch the boot-sign .img and since I got the new Magisk, I let it patch, flashed, and now voila, nothing but a bootloop. Off to DM Verity my way out of it lol.

Articul8Madness said:
Just picked this up for the significant other's bday. Bootloader unlocked it with the instructions from @ipdev, and can report that method works. Can't get root.
Does anyone have this device and have achieved root? I'm a bit perplexed, even flashing a patched boot img isn't getting Magisk on there the way that it should.
Thanks!
Important to Note that the 460 has the exact same EVERYTHING as the 450, including build #s. They just gave it double the internal space is the only difference I've seen.
UPDATE: Just bricked the lil' guy. Since the device is encrypted with every system file having a -sign behind it, I went and frolicked around trying to get Magisk on there via ADB. The only way to do that was to patch the boot-sign .img and since I got the new Magisk, I let it patch, flashed, and now voila, nothing but a bootloop. Off to DM Verity my way out of it lol.
Click to expand...
Click to collapse
If it is close enough to 450, and you can get into fastboot, you can try and boot the linked boot.img
fastboot boot m19_ST16C7BNv205.img
Same modifications I had to use to get the first boot image I found to work with BNTV450.
avb, mtk type and signature removed.
Also patched with Magisk 19 (canary release)
For good measure.
https://drive.google.com/open?id=1LgtB2JKCKwLJ64mUlij5Cb_cJrBi8Av1
PS.
Tested above modified v2.0.5 boot.img on BNTV450 running v1.0.2, so it should work on BN v1.0.2 and up.
Good Luck.
Cheers.
PPS.
Just ordered one. (Should show up in 2-3 days.)

Hey @ipdev make sure you get the insurance for 2 years. Shouldn't be more than 6-8 bucks. You're going to need it.
I went ahead and tried all the versions that you posted on your OP for flashing; only one was successful - the rest softbricked on the flash. When I went back and flashed the 460 stock on it, it was a different stock and never did run back right - kept getting the blinking red border ring and unfortunately lost the serial #, flash, and every possible entry on the "About Nook" tab - essentially glitching it out. Since I''d only had it for 12 hours, I took it back and swapped it out for a fresh one
So the issues I'm seeing so far are:
1. It's encrypted and says as such - this is what is causing the probs later in flashing and you can't deactivate it from what I see so far without a custom recovery.
2. Patching the boo img via MagiskManager will softbrick it, and I tried with both 18 & 19 inase there were issues with one over another.
3. The device will try to auto update ASAP OTA so make sure you don't connect it to the internet before you disable that function.
4. There is no "official firmware" you can download - B&N will only let you direct download the firmware through notifications. Granted, if you want the only one I was able to find I can post it (it says its Oreo 8.1.0 but it looks different than what comes on the device and its running a crappy Android Go)
5. Its easy to unlock the bootloader per your instructions but after you get the Orange State it takes an awful long time for basic boot (which is more of a personal irritant than a problem, lol)
6. If you patch and flash the boot img with Magisk, you will completely lose the screen. Keep in mind though, if you plug it into the computer you will keep hearing the connect/disconnect chimes. It will keep doing that and neither adb or fastboot will function (even though you can fastboot devices command and it will show a Daemon output).
7. Booting into recovery becomes harder and harder from adb and fastboot once you unlock the bootloader - pressing volume rocker and power does not do it at all.
I'll try your new files and see what happens...I think the guy got a hell of a lot of potential and needs a nice streamlined rom or at the very least root to get the bloat off so its faster. But I think it says something on its crippled nature when the guys at B&N say it ain't worth it in the long run - apparently they aren't as great as even the nook HD line.

Articul8Madness said:
Hey @ipdev make sure you get the insurance for 2 years. Shouldn't be more than 6-8 bucks. You're going to need it.
I went ahead and tried all the versions that you posted on your OP for flashing; only one was successful - the rest softbricked on the flash. When I went back and flashed the 460 stock on it, it was a different stock and never did run back right - kept getting the blinking red border ring and unfortunately lost the serial #, flash, and every possible entry on the "About Nook" tab - essentially glitching it out. Since I''d only had it for 12 hours, I took it back and swapped it out for a fresh one
So the issues I'm seeing so far are:
1. It's encrypted and says as such - this is what is causing the probs later in flashing and you can't deactivate it from what I see so far without a custom recovery.
2. Patching the boo img via MagiskManager will softbrick it, and I tried with both 18 & 19 inase there were issues with one over another.
3. The device will try to auto update ASAP OTA so make sure you don't connect it to the internet before you disable that function.
4. There is no "official firmware" you can download - B&N will only let you direct download the firmware through notifications. Granted, if you want the only one I was able to find I can post it (it says its Oreo 8.1.0 but it looks different than what comes on the device and its running a crappy Android Go)
5. Its easy to unlock the bootloader per your instructions but after you get the Orange State it takes an awful long time for basic boot (which is more of a personal irritant than a problem, lol)
6. If you patch and flash the boot img with Magisk, you will completely lose the screen. Keep in mind though, if you plug it into the computer you will keep hearing the connect/disconnect chimes. It will keep doing that and neither adb or fastboot will function (even though you can fastboot devices command and it will show a Daemon output).
7. Booting into recovery becomes harder and harder from adb and fastboot once you unlock the bootloader - pressing volume rocker and power does not do it at all.
I'll try your new files and see what happens...I think the guy got a hell of a lot of potential and needs a nice streamlined rom or at the very least root to get the bloat off so its faster. But I think it says something on its crippled nature when the guys at B&N say it ain't worth it in the long run - apparently they aren't as great as even the nook HD line.
Click to expand...
Click to collapse
If you just need a temporary root, I put up this guide a few minutes ago since there was no definite resource about rooting this device. https://forum.xda-developers.com/nook-7/how-to/how-to-temporary-root-bntv460-t3963304

turtleletortue said:
If you just need a temporary root, I put up this guide a few minutes ago since there was no definite resource about rooting this device. https://forum.xda-developers.com/nook-7/how-to/how-to-temporary-root-bntv460-t3963304
Click to expand...
Click to collapse
I appreciate it, but I've since taken it back. Tell you what though, maybe I'll pick up a used one on ebay and try it

I'm stuck trying to flash a GSI, I can't figure what I'm doing wrong

Hi!
I'd like to get rid of the HTC original firmware on my U12+.
I just tried to flash GSIs of LineageOS 17 by AndyYan then AOSP 10.0 by phhusson, without luck.
I have a factory unlocked HTC U12+ (fastboot mode showing Secure Boot : Development, Secure State : S-Off, Device State : Unlocked(U)) so I went straight to the "flash GSI without TWRP" part of the official XDA tutorial: I factory reset the phone, rebooted in bootloader, then erased system and successfully flashed lineage-17.0-20191117-UNOFFICIAL-treble_arm64_avN.img.
But after reboot, I got a bootloop.
I've wanted to try the TWRP method, but upon launch it asked my password for decryption. While I'm sure of the code I've used and typed, decryption doesn't work, so TWRP didn't help.
Then I've flashed the AOSP GSI via fastboot, but then I got a "This device is corrupt. It can't be trusted and will not boot" error message.
So as suggested on another thread I've used the SD card method to flash a RUU, specifically 2Q55IMG_IMAGINE_DUGL_O80_SENSE10GP_HTC_Europe_1.30.401.2_Radio_sdm845-000201b-1807311356_release_528103_signed_2_4.zip. It flashed successfully, but then it booted to the static white HTC logo on black background and stayed there for 20 min.
I can still boot to fastboot mode/download mode, but I don't know what to do.
I can't figure what I'm doing wrong, can you help me, please?

After another attempt I've managed to go back full stock using the microSD card method.
Then I've been able to boot TWRP, which first showed a "Mount" "Decrypt data" screen, asking for a password. The 6 digits code I've used previously doesn't work. So TWRP "failed to decrypt data", also was "unable to mount storage" and "failed to unmount /system_root (device or resource busy)". As suggested, I formatted/wiped data to remove encryption.
Then I performed a factory reset, adb pushed system-quack-arm64-ab-vanilla.img to /data, then flashed it successfully to the system partition, as requested in the afore mentioned official tutorial. On reboot I get another bootloop. Bootscreens shows the HTC and Powered by Android wordmarks and also "** ORANGE **" on the top left corner of the screen.
What am I missing?! :-/

After first boot of flashed RUU at the HTC logo reboot the device. Got there myself, rebooted(using power button) and the OS booted up perfectly.
TWRP doesn't decrypt latest Pie with July Patch. So you will not decrypt it. (Wiping does not decrypt).
I used temporary TWRP, flashed permanent (with touchscreen patch), installed Magisk, Rooted, installed LeeDroid from Magisk for example.
Make sure you have a correct RUU for your CID version.
I am not sure how a project treble ROM will work on this device. You still need signed HTC drivers. I don't think we are ready now for 10 on this device for daily use. HTC did quite awful with the Pie update and many bugs are still not fixed after 6 months.

GSI tutorials advise against rooting before flashing. They advise to keep the phone full stock. What do you think about this?
I was unable to determine CID and MID yesterday from fastboot mode or TWRP, so I've downloaded the latest RUU for dual SIM and EMEA model, as my U12+ is dual SIM and I live in Europe.
Now that the phone is back to full stock, I just installed a terminal app right on the phone and executed the following:
getprop ro.cid : 11111111
getprop ro.boot.mid : empty
I understand that the phone is "SuperCID", but I don't really understand what that implies.
Regarding Treble, Treble Info by Hackintosh Five reports (translated from French by me): "Your device supports the old Project Treble version, using VNDK version 26.0."
But the U12+ is listed as supported on phhusson's wiki. A few issues are listed, but I'm fine with them.
I've read a tutorial that asks to "extract the GSI and vendor+boot zips", but then doesn't what to do with the vendor+boot zips. Do you know?
Lastly, do you know what the **GREEN** or **ORANGE** overlay means on the boot screen?
Thank you for your help!

Romano2K said:
GSI tutorials advise against rooting before flashing. They advise to keep the phone full stock. What do you think about this?
Thank you for your help!
Click to expand...
Click to collapse
SuperCID implies you can install any RUU (not specific CID). So you can "transform" your US version into european or asian... for a specific reason. No need to do that. Usually there was a specific base that was needed to install a custom ROM or Custom Recovery or people just wanted a different version because they lived in a different part of the world from where the phone was purposed.
I am guessing the **GREEN*** overlay has smth to do with the RUU (if it's embedded in the Boot animation zip (basically pictures+ sound)) or has smth to do with the nature of your tempering (S-OFF/SuperCid etc.)
with this device and serves as a warning for users/devs/internal testing.
You should find your answers on a different section. More active. I see no activity here. And it's HTC's fault for dying" on us. I myself bought the U12 just to own (probably) the last flaghsip device they make. Here's to the comeback.... but I am not sure it will be real. HTC was one of the fastest to update, for example.. until 2019. We are still with bugs and on the July patch. Right not, in reality I am just hoping for one last Pie update to fix bugs and that's it. Will give this device a 1 year run and buy something better.
So go to the Android general section where you can ask how can you compile your ROM on this device. They should help. I can not offer sufficient knowhow on this topic.

Thank you for these clarifications
The **GREEN** or **ORANGE** overlay is shown for a few seconds on the vendor logo, before boot animation. It wasn't showing before I started messing with firmwares, but nevermind
Yes unfortunately HTC is kind of dead on the smartphone front. They deserved it at the end, U12 Plus' firmware is badly translated and full of bloatware. I've been a long fan, I've had four Orange branded Windows Mobile phones and PDA phones from 2002 (17 years ago!) to 2007, then a few Android smartphones (HTC Desire <3), so I think it's sad.
Anyway I've been able to flash AOSP 10.0 GSI by phhusson with his help.
So I've just shared a quick tutorial:
https://forum.xda-developers.com/u12-plus/how-to/guide-how-to-install-generic-image-gsi-t4019151
Thank you for your help Deonix!

Romano2K said:
Thank you for these clarifications
The **GREEN** or **ORANGE** overlay is shown for a few seconds on the vendor logo, before boot animation. It wasn't showing before I started messing with firmwares, but nevermind
Yes unfortunately HTC is kind of dead on the smartphone front. They deserved it at the end, U12 Plus' firmware is badly translated and full of bloatware. I've been a long fan, I've had four Orange branded Windows Mobile phones and PDA phones from 2002 (17 years ago!) to 2007, then a few Android smartphones (HTC Desire <3), so I think it's sad.
Anyway I've been able to flash AOSP 10.0 GSI by phhusson with his help.
So I've just shared a quick tutorial:
https://forum.xda-developers.com/u12-plus/how-to/guide-how-to-install-generic-image-gsi-t4019151
Thank you for your help Deonix!
Click to expand...
Click to collapse
Interesting. Will look into your tutorial. So thank you. If the boot animation.zip was modified you will find in in root/system/[search for it] -you can lookup up each image that forms the animation to check. I myself modified the ZIP to not include the annoying audio, so i deleted it. )
So is the GSI good for daily use? I would mess around with it until i sell my HTC U11. Still using the U11 as a daily driver for the past 2 weeks. And by selling it i mean practically giving a perfectly good phone away for scrap... because it's old.

Deonix said:
I myself modified the ZIP to not include the annoying audio, so i deleted it.
Click to expand...
Click to collapse
That's clever! The HTC boot sound was annoying when I had trouble booting the bootloader, because of the tactile buttons.
Deonix said:
So is the GSI good for daily use?
Click to expand...
Click to collapse
At this point I have a big problem with AOSP 10.0: brightness is blocked at 100%. There's a workaround involving adb, but for some reason adb isn't working with this firmware, even though I've activated developer options and USB debugging. I haven't had the time to tinker yet, I'll give it a try asap and I'll report back!
Thank you again for your help

Romano2K said:
Thank you for these clarifications
The **GREEN** or **ORANGE** overlay is shown for a few seconds on the vendor logo, before boot animation. It wasn't showing before I started messing with firmwares, but nevermind
Yes unfortunately HTC is kind of dead on the smartphone front. They deserved it at the end, U12 Plus' firmware is badly translated and full of bloatware. I've been a long fan, I've had four Orange branded Windows Mobile phones and PDA phones from 2002 (17 years ago!) to 2007, then a few Android smartphones (HTC Desire <3), so I think it's sad.
Anyway I've been able to flash AOSP 10.0 GSI by phhusson with his help.
So I've just shared a quick tutorial:
https://forum.xda-developers.com/u12-plus/how-to/guide-how-to-install-generic-image-gsi-t4019151
Thank you for your help Deonix!
Click to expand...
Click to collapse
Did Bluetooth work for you on AOSP? Tried to install a few GSIs over the last couple of days but I cannot get Bluetooth working for calls or media. Apparently it's a known issue but none of the fixes I can find here on the forums seem to work for me. Just wondered what your experience was on another U12. I even tried your guide but still no Bluetooth for me.

Useful post about the GREEN message.

How to sideload into OP 8T (KB05AA)? Help!

My current OxygenOS is the latest "12" version which after the OTA, OnePlus has strangely removed from their support site. It has some issues I don't like as well as many others who have posted on the OP Community board. The inactive partition is corrupted and I'm not sure what happened except I was rooted and tried to use Magisk protocol to keep root, but I got a bootloop afterwards. I changed the active slot to the old slot and got the new "12" version running. The inactive slot is corrupted and I get a Qualcom error message.
I want to go back to the previous ver "11" or LineageOS 18.1. However, I cannot get anything to allow me to sideload to the inactive partition or any partition. If I use adb while the phone is in normal operation, I get adb to show devices so I know I have a link. However, I cannot do adb sideload from the normal booted phone. So I have to reboot it to recovery where it looses it's connection to the adb command on the PC. It sees the phone but says it is unauthorized. It is a loop where adb works while phone is booted but not when I am in recovery. I have USB debugging set on and have revoked usb debugging and reset the whole scenario many times to see if different sequences might work so that I can do a sideload. Nothing has gotten me past this yet. I have even tried the Oxygen Updater app but OxygenOS system update won't let you install a prior version if you have the current one.
Any suggestions. Thanks

zzjea said:
My current OxygenOS is the latest "12" version which after the OTA, OnePlus has strangely removed from their support site. It has some issues I don't like as well as many others who have posted on the OP Community board. The inactive partition is corrupted and I'm not sure what happened except I was rooted and tried to use Magisk protocol to keep root, but I got a bootloop afterwards. I changed the active slot to the old slot and got the new "12" version running. The inactive slot is corrupted and I get a Qualcom error message.
I want to go back to the previous ver "11" or LineageOS 18.1. However, I cannot get anything to allow me to sideload to the inactive partition or any partition. If I use adb while the phone is in normal operation, I get adb to show devices so I know I have a link. However, I cannot do adb sideload from the normal booted phone. So I have to reboot it to recovery where it looses it's connection to the adb command on the PC. It sees the phone but says it is unauthorized. It is a loop where adb works while phone is booted but not when I am in recovery. I have USB debugging set on and have revoked usb debugging and reset the whole scenario many times to see if different sequences might work so that I can do a sideload. Nothing has gotten me past this yet. I have even tried the Oxygen Updater app but OxygenOS system update won't let you install a prior version if you have the current one.
Any suggestions. Thanks
Click to expand...
Click to collapse
I've tried to sideload OOS 11 using Los recovery, but it doesn't work. And, since OOS recovery doesn't support sideloading I'd say that sideloading isn't an option.
However, using payload dumper and fastbootd may be an option. I would have tried this but I'm on 12 and there's no full install zip. But you're going back to 11 so this is a possibility.
But I wouldn't make these changes in the current working slot - don't break what's working.
I'm also not sure whether to use the OOS recovery for the fastbootd stuff or use one from a custom rom.
As you can gather, I've not done this. So you have to work out the details yourself and be prepared to be a guinea pig for the process.
If you do go down this path I'd be very interested in the outcome.
Of course, you could always use the MSM tool to go back to an older version.

Since there is no TWRP for OP8T and recovery is non-existent on it, how is anyone installing ROMs on this device. I have just jumped from my original purchase of OnePlus One that still works except for the power button (it is current with LineageOS 18.1 and rooted), to the OP8T over a month ago and a lot has changed since the OPO. I have looked up fastbootd but still don't understand the differences. Comments about installing ROMS are made all over this forum but most assume you know how to do it. I have gotten spoiled with TWRP on the OPO and can flash a new ROM in around a minute almost with my eyes closed. This is getting confusing. I successfully rooted this OP8T after I got it and that was a very touchy thing having to jump through a bunch of hoops to get it done. I was surprised that it worked after all the steps that were required. It used to be that there was info on how to do this kind of thing on this forum, but now it seems that most everyone thinks you should already know the basics. Well the basics are part of my problem right now. A and B slots are new to me and I think I understand that but have not seen an explanation of how that all works when loading ROMS. I have a working phone at the moment in the active slot, but the "other" slot is corrupted. I tried to duplicate the active slot to the inactive slot and of course I can't get adb to work.... Isn't anyone else having these issues? I will look into the MSM tool again.
If you know where the info is that I'm looking for is, please give me the links. Thanks

zzjea said:
Since there is no TWRP for OP8T and recovery is non-existent on it, how is anyone installing ROMs on this device. I have just jumped from my original purchase of OnePlus One that still works except for the power button (it is current with LineageOS 18.1 and rooted), to the OP8T over a month ago and a lot has changed since the OPO. I have looked up fastbootd but still don't understand the differences. Comments about installing ROMS are made all over this forum but most assume you know how to do it. I have gotten spoiled with TWRP on the OPO and can flash a new ROM in around a minute almost with my eyes closed. This is getting confusing. I successfully rooted this OP8T after I got it and that was a very touchy thing having to jump through a bunch of hoops to get it done. I was surprised that it worked after all the steps that were required. It used to be that there was info on how to do this kind of thing on this forum, but now it seems that most everyone thinks you should already know the basics. Well the basics are part of my problem right now. A and B slots are new to me and I think I understand that but have not seen an explanation of how that all works when loading ROMS. I have a working phone at the moment in the active slot, but the "other" slot is corrupted. I tried to duplicate the active slot to the inactive slot and of course I can't get adb to work.... Isn't anyone else having these issues? I will look into the MSM tool again.
If you know where the info is that I'm looking for is, please give me the links. Thanks
Click to expand...
Click to collapse
I presume that A and B slots are partitions
Code:
lrwxrwxrwx 1 root root 16 1970-01-03 04:30 /dev/block/bootdevice/by-name/boot_a -> /dev/block/sde11
lrwxrwxrwx 1 root root 16 1970-01-03 04:30 /dev/block/bootdevice/by-name/boot_b -> /dev/block/sde35
So try using MSM tool to restore them or find a copy of that partition from a working phone and flash on yours.
Maybe this can help you as well.

zzjea said:
Since there is no TWRP for OP8T and recovery is non-existent on it, how is anyone installing ROMs on this device. I have just jumped from my original purchase of OnePlus One that still works except for the power button (it is current with LineageOS 18.1 and rooted), to the OP8T over a month ago and a lot has changed since the OPO. I have looked up fastbootd but still don't understand the differences. Comments about installing ROMS are made all over this forum but most assume you know how to do it. I have gotten spoiled with TWRP on the OPO and can flash a new ROM in around a minute almost with my eyes closed. This is getting confusing. I successfully rooted this OP8T after I got it and that was a very touchy thing having to jump through a bunch of hoops to get it done. I was surprised that it worked after all the steps that were required. It used to be that there was info on how to do this kind of thing on this forum, but now it seems that most everyone thinks you should already know the basics. Well the basics are part of my problem right now. A and B slots are new to me and I think I understand that but have not seen an explanation of how that all works when loading ROMS. I have a working phone at the moment in the active slot, but the "other" slot is corrupted. I tried to duplicate the active slot to the inactive slot and of course I can't get adb to work.... Isn't anyone else having these issues? I will look into the MSM tool again.
If you know where the info is that I'm looking for is, please give me the links. Thanks
Click to expand...
Click to collapse
Here's some information that I found helpful:
A/B (Seamless) System Updates | Android Open Source Project
source.android.com
Dynamic Partitions | Android Open Source Project
source.android.com
Implementing Dynamic Partitions | Android Open Source Project
source.android.com
Moving Fastboot to Userspace | Android Open Source Project
source.android.com
Here's a couple of ways to get one partition to look like another one:
1. The Los pre-installation instructions have instructions on how to sync the partitions. Note: it doesn't sync boot, dtbo, or vbmeta.
2. If you're rooted you can copy one partition to the other using
Code:
dd if=/dev/block/by-name/xxxx_(active-slot) of=/dev/block/by-name/xxxx_(inactive-slot)
For example:
Code:
dd if=/dev/block/by-name/boot_b of=/dev/block/by-name/boot_a
Note that you can find out which is the active slot using getprop ro.boot.slot_suffix
I've written a shell script based on the Los zip in 1. (see attachment) that will do all partitions - use at your own risk. Don't run it unless you understand what it's doing.