I rooted with some effort and while tried to install but i had the wrong bootloader version (my fault for not checking despite being on the tutorial). So i tried to flash nougat and the problems began. It gave a message saying that the booloader was not secure and i can only boot into my phone from the fastboot menu.
My whish is to install a custom rom but i have to be on nougat or above and my stock rom is only marshmallow
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Hello !
I installed the 5.1.1 AOSP rom to update my 5.0 rom (AOSP too) by my TWRP recovery. I wanted to next flash SuperSU, but when i try to enter in recovery mode, i got this : "Secure booting error : Boot certification verify". I tried to reinstall the recovery, but i need to be rooted, and for being rooted, i need to flash SuperSU, so i'm stuck.
I can use my tablet perfectly, but i can't get to the recovery.
Thank you for your help !
What variant of the the G Pad 8.3 are you using? VK810, V500, V510? You HAVE to find out how to root first because without root, you can't flash a custom recovery. I only know rooting details for the VK810 and I'm guessing you have the V510 (GPE - Google Play Edition) since you say you're on AOSP already. I'm sure if it's rootable there's a thread in these sections about it for your variant. When a device is rootable, there's always an initial way to get there without flashing SuperSU, except possibly for Samsung when you can flash ODIN-compatible repackaged custom recoveries.
I forgot to put it but i have a V500, i didn't had this problem when i installed 5.0 AOSP (firstly i had the LG stock ROM).
I saw that i can install TWRP with ADB, but it is for the GPE only :/
If you already had TWRP flashed then you've got some other problem going on. Maybe you have to downgrade the bootloader (aboot.img) in order to get into custom recovery on the V500? We do on the VK810. If that's the case then that means that somehow you had updated your bootloader since the last time you got into TWRP.
You might end up having to go back to square one, put whatever stock ROM on it that allows you to root it and install TWRP, ensure you can get into TWRP and the ROM fine, then flash whatever ROM you want. If the ROM you want doesn't already have root capability baked in, such as current CyanogenMod builds do, then make sure and flash SuperSU from TWRP before you exit out of custom recovery.
So I recently bought an Lg G3 D851 and the phone was already Rooted and bootloader unlocked. So i downloaded some root checkers to verify and then installed SuperSU. Since after doing some research I knew that the T-Mobile variant comes with a factory unlocked bootloader. I tried flashing the latest twrp from their own website using flashify, it would flash successfully but instead of going into twrp when rebooting into recovery, it just says: Fastboot mode started. It is the same case for all the other recoveries i could find for the d851. Im on Kitkat 4.4.2.
You can try using the latest twrp i think is 3.0.0.2, and your problem of fastboot.
Re-flash the system since a tot or kdz becasue you have damaged the bootloader and the recovery givin that the last hope who is fastboot mode.
i hope have you fixed the problem.
I never got the 'System Update' and I can't find the stock Marshmallow ROM anywhere. How can I upgrade the bootloader without the stock image? P.S: I'm using crDroid (CM12) now, unlocked bootloader
I updated to Q by flashing via fastboot. I am not happy with it. I tried to downgrade by flashing a stock image via fastboot but I get an error saying the wrong BL is installed. It's asking for an older version.
How can I flash this older version? Or, better yet, how can I flash a stock image or custom ROM of Android Pie without encountering an error?
I've searched and everything I tried from what I found still results in the version error.
If I remember correctly, you'll need to flash using the flash-all script so that it overwrites everything.
supaneko said:
I updated to Q by flashing via fastboot. I am not happy with it. I tried to downgrade by flashing a stock image via fastboot but I get an error saying the wrong BL is installed. It's asking for an older version.
How can I flash this older version? Or, better yet, how can I flash a stock image or custom ROM of Android Pie without encountering an error?
I've searched and everything I tried from what I found still results in the version error.
Click to expand...
Click to collapse
You can only downgrade with an unlocked bootloader. Downgrading without can brick your p3xl. After unlocking you can flash the 9.0 firmware and you won't have any bootloader or partition errors it will just work.
I was trying to unlock and flash custom ROM on my Realme x2 RMX 1991 device.
I succeed to unlock the device. but still have some issues with flashing TWRP as a custom recovery.
I was thinking to flash an old version of firmware like A14 instead of my current version A16. and try to re-flashing TWRP after that.
Is it worth it? and how can I flash stock firmware without using custom recovery?
I tried to flash with regular recovery, but it's juts failed because it's older than the current firmware version.
the boot image shows up but ony for less than a second and when i try to go in fastboot its the same .... less than a second