Upgrade to MM Asus ZE550KL Z00LD

[jimjack12]

Goodmorning everyone,
sorry if i reopen an old discussion, but I find myself with a big one
problem on my smartphone Asus ZE550KL Z00LD;
I had problems installing the AOSP 6.7 custom ROM and thinking
, ignorantly, that it was a Marshmallow problem, i did the
downgrade to Lollipop, installing the StockBoot 1.16.40.763 and its
stock Rom Lollipop 1.16.40.763.

Now I find myself with Lollipop stock rom, bootloader unlocked (and therefore i can't
do no update to MM via OTA ...), and i can't install
no custom ROM from TWRP.

Can you tell me how I can update the ROM in Marshmallow and then
to install a custom ROM?

thanks a lot

 

[sangmaster21]

and I can't install a custom room either

Goodmorning everyone,
sorry if i reopen an old discussion, but I find myself with a big one
problem on my smartphone Asus ZE550KL Z00LD;
I had problems installing the AOSP 6.7 custom ROM and thinking
, ignorantly, that it was a Marshmallow problem, i did the
downgrade to Lollipop, installing the StockBoot 1.16.40.763 and its
stock Rom Lollipop 1.16.40.763.

Now I find myself with Lollipop stock rom, bootloader unlocked (and therefore i can't
do no update to MM via OTA ...), and i can't install
no custom ROM from TWRP.

Can you tell me how I can update the ROM in Marshmallow and then
to install a custom ROM?

thanks a lot

 

[Phoniex_47]

MM firmware

Goodmorning everyone,
sorry if i reopen an old discussion, but I find myself with a big one
problem on my smartphone Asus ZE550KL Z00LD;
I had problems installing the AOSP 6.7 custom ROM and thinking
, ignorantly, that it was a Marshmallow problem, i did the
downgrade to Lollipop, installing the StockBoot 1.16.40.763 and its
stock Rom Lollipop 1.16.40.763.

Now I find myself with Lollipop stock rom, bootloader unlocked (and therefore i can't
do no update to MM via OTA ...), and i can't install
no custom ROM from TWRP.

Can you tell me how I can update the ROM in Marshmallow and then
to install a custom ROM?

thanks a lot

DM me ill give marshmallow firmware
flash it through twrp u are gud to go.

 

[jimjack12]

Resolved

OK thank you very much.
I solved it like this:
From Recovery Mode I updated this version WW_1.17.40.1531.
Then I installed an OTA update downloaded from a Russian site which allowed me to switch from the Lollipop version 1.17.40.1531 to the Marshmallow version 21.40.1220.1615.
Now it works perfectly both AOSP 6.7 Z00L and AOSP 5.8 Z00L
Thanks
Good weekend