• Based Firmware T580 : DBT-T580XXU2BRB2
• Based Firmware T585 : DBT-T585XXU2BRB2
• Android 7.0 Nougat.
• T580, Security patch 20180201. UPDATED 20180317, SuperSU-v2.82-20170528, Busybox-1.28.1-YDS-ARM. Added (ES, RU) KBD language informations.
• T585, Security patch 20180201. UPDATED 20180317, SuperSU-v2.82-20170528, Busybox-1.28.1-YDS-ARM. Added (ES, RU) KBD language informations.
• Wizards deleted (AOSP style).
• Highly debloated, ±87 packages removed. Some stock applications are available with SamApp (in download section)
• All native network communication functions was preserved.
• DeOdexed.
• DeKnoxed (as you can see in the screenshot on security tab, Knox functionality was entirely removed).
• Rooted SuperSU-v2.82, thanks to Chainfire&CCMT.You can also use Magisk (see here).
• BusyBox Busybox-v1.28.x-YDS thanks to YashdSaraf. New version available (Download section)
• Init.d Enabled for SuperSU.
• Internal Encryption off. SuperSU own this now and MAGISK too.
• Deactivation of the guest account display, can be reversed with patch in (Download section)
• Optimizations: boostSdintSdext, batterytweaks, ram, network, display quality, more responsive, and more . . .
• Added some personal sounds files for notifications, rings, alarms as default settings.
• Added apps: Extremely RebootMe v1.x / Package Disabler 1.x.x thanks to VuDanThanh.
• Size of unpacked rom T580: Original -> 2.23Go / Extremely v1.0.3 -> 1.13Go.
• Size of unpacked rom T585: Original -> 2.25Go / Extremely v1.0.1 -> 1.25Go.
• Thanks to ASSAYYED for his ASSAYYED KITCHEN.

Click to expand...

• Backup all, system, data, personal data, copy all your internal storage to a secure place.

• This Rom come without any Internet Browser, Calculator, Calendar, Mail, Music & Video player, Photo/video editing. Download your favorite with GPlay or you can use these free light apps or see also "SamApp" in the download section, for the original Samsung applications.

• Extremely v4.0 SM-T580: Exmely v4.0bT580.zip, this is the T580 ROM . . . Last UPDATE 20180317 See here for more informations on install/update.
• Extremely v7.0 SM-T585: Exmely v7.0bT585.zip, this is the T585 ROM . . . Last UPDATE 20180317 See here for more informations on install/update.
• Files checksum: Files_checksum.SUM (linux format[LF]). You can check integrity of each files (in case of corrupted zip file). HowTo for Linux, Windows, Mac. users included.

• Exmely Samsung Apps v1.3_20171209: Exmely_SamAppz1.xx.7z, app that include some stock rom applications and more ... for those who want. See here for more informations on list/update and how to proceed. It Include YouTubeAddFree & Backgroud playing app, original Samsung Weather, quick options/search bar, edit option in gallery . . . Last UPDATE 20180317
• Exmely bT580_bT585_OffBootFile-patch: Exmely_bT580_bT585_OffBootFile.zip Last UPDATE 20180317 See here for more informations on install/update.
• Exmely Switch Multi-Users Patch [on/off]: ExmelySwitchMultiUsersPatch.zip, if you use multi-users account you need this patch (TWRP) to switch between on/off capability, (you can configure multiple accounts and hide them with the switcher, and get it back when you need). Last UPDATE 20170710

• TWRP 3.1.1.0 backup file: TWRP v3.1.1.0 backup updating your TWRP to latest version with itself (copy the directory included in the .zip file to "/TWRP/BACKUPS/--your-device--/", boot under TWRP, tap on [Restore] and select "TWRP 3.1.1.0", [Swipe to Restore], it's done). Please download the original TWRP file from the official site before using it (to respecting their wishes and their work)
• Latest MAGISK [STABLE]: Magisk v16.0.
• Latest SuperSU [STABLE]: SuperSU-v2.82-20170528, zip file to use with TWRP. Thanks to Chainfire
  (Other SRx version are available but cause some issues with login screen using schema).
• Latest BusyBox [STABLE]: Busybox-v1.28.1-YDS-20170906, zip file to use with TWRP. Thanks to YashdSaraf.

• New Extremely rom version available. v7.0 for T585: based on T585XXU2BRB2 and v4.0 for T580: based on T580XXU2BRB2.

• Extremely Rom v3.0 SM-T580 available T580XXU2BQL1. Security patch 2017-12-01. Information on update
• Preparing new version for SM-T580 based on T580NEE2BQL1 (Android security patch level: 01.12.2017)
• SM-T580 Chinese version, modded to European seems working as well but not (officialy) published. I prefer to wait for an official American or European version. Information here
• Extremely Rom SM-T585 available T585XXU2BQK5. Security patch 2017-11-01. Information on update
• Preparing new firmware from Samsung for both models, T580ZCU2BQK5 and T585XXU2BQK5. Security patch 2017-11-01. I don't know if i can mod T580ZCU2BQK5 (Chinese) for European countries, i will try ...
• New TWRP 3.2 available from official site, Old backups seems not to be ok with this new version, take care. Information on update

• New firmware available from Samsung for both models, T585XXU2BQJ1 and T580XXU2BQJ1. Security patch still in 2017-08-01. I don't plan to make a new custom rom for it, useless in my opinion.

• Removing Exclamation mark in settings menu. (HowTo)
• SamApps Updated with last version of Youtube modded app and McAfee protection software, Last UPDATE 20171031 Available in download section
• Adding MD5 checksum control for files hosted by FS.
• New patch to recover original "boot.img" to use after 1st reboot for correct Magisk installation instead of superSU if you wish. Available in download section
• SamApps update with new Youtube modded app and new version of photo editor from samsung, Last UPDATE 20171001 Available in download section
• Extremely v2.0bT580 and v5.0bT585 updated, Last UPDATE 20171001 Available in download section

• Extremely_v3.0bT580 updated [T580XXU2BQL1] security patch 20171201
• OffBootFile (Official boot.img file) updated to handle new rom versions.

• Install extremely rom corresponding to your device following the OP instructions (first page).
• Upgrading, simply apply installation from TWRP, no wipe needed. If you're a Magisk's user, you need AFTER the FIRST boot, enter TWRP and following steps described below (Installing MAGISK)

• Install Extremely rom like always following OP and let the device rebooting normally at least 1 time before next step.
• You must use "Exmely_bT580_bT585_OffBootFile.zip" (download section) with TWRP and ( WITHOUT REBOOTING ! ) install latest version of MAGISK followed by Busybox if needed (choose *ARM.zip file). So, you must put all needed files in your extSdCard before starting operation !

• Exclamation mark get you bad mood ? read this.
• What "Exmely_bT580_bT585_OffBootFile.zip" do ?. This patch simply put back the original boot.img file (stock) that permit a correct installation of Magisk, don't forget to not reboot between steps, if not, your data's partition will be erased and partition will be encrypted again. In this case, you need to format it in TWRP.
• Each update erase apps installed with SamApps, it's a normal thing, you just need to put them back with it, your generated data with these apps still present except if you delete "data" directory in TWRP.
• If multi-users, was previously enabled, it will back to disabled, you'll need to apply the patch again, your others accounts remain present with their owns preferences.

• Extremely_v4.0bT580 updated [T580XXU2BRB2] security patch 20180201
• Extremely_v7.0bT585 updated [T585XXU2BRB2] security patch 20180201
• OffBootFile (Official boot.img file) updated to handle new rom versions.
• SamAppz with actualized version of APK from latest Samsung firmware. Last available version of Youtube (nopub, back ground play) from @ZaneZam

• Install extremely rom corresponding to your device following the OP instructions (first page).
• Upgrading, simply apply installation from TWRP, no wipe needed. If you're a Magisk's user, you need AFTER the FIRST boot, enter TWRP and following steps described below (Installing MAGISK)

• Install Extremely rom like always following OP and let the device rebooting normally at least 1 time before next step.
• You must use "Exmely_bT580_bT585_OffBootFile.zip" (download section) with TWRP and ( WITHOUT REBOOTING ! ) install latest version of MAGISK followed by Busybox if needed (choose *ARM.zip file). So, you must put all needed files in your extSdCard before starting operation !

• Exclamation mark get you bad mood ? read this.
• What "Exmely_bT580_bT585_OffBootFile.zip" do ?. This patch simply put back the original boot.img file (stock) that permit a correct installation of Magisk, don't forget to not reboot between steps, if not, your data's partition will be erased and partition will be encrypted again. In this case, you need to format it in TWRP.
• Each update erase apps installed with SamApps, it's a normal thing, you just need to put them back with it, your generated data with these apps still present except if you delete "data" directory in TWRP.
• If multi-users, was previously enabled, it will back to disabled, you'll need to apply the patch again, your others accounts remain present with their owns preferences.

• Extremely_v2.0bT580 update [T580XXU2BQI9] security patch 20170801
• Extremely_v5.0bT585 update [T585XXU2BQI9] security patch 20170801
• SamApps update with newer version of photoEditor from samsung and Youtube modded app from @ZaneZam (thanks to him) .
• Magisk patch not supported anymore, instead i've made a simple patch (all rom's versions) to put back the stock boot.img file to permit proper apply of Magisk application and rooting system.

• Install extremely rom corresponding to your device following the OP instructions (first page).
• Upgrading, simply apply installation from TWRP, no wipe needed. If you're a Magisk's user, you need AFTER the FIRST boot, enter TWRP and following steps described below (Installing MAGISK)

• Install Extremely rom like always following OP and let the device rebooting normally at least 1 time before next step.
• You must use "Exmely_bT580_bT585_OffBootFile.zip" (download section) with TWRP and ( WITHOUT REBOOTING ! ) install latest version of MAGISK followed by Busybox if needed (choose *ARM.zip file). So, you must put all needed files in your extSdCard before starting operation !

• What "Exmely_bT580_bT585_OffBootFile.zip" do ?. This patch simply put back the original boot.img file (stock) that permit a correct installation of Magisk, don't forget to not reboot between steps, if not, your data's partition will be erased and partition will be encrypted again. In this case, you need to format it in TWRP.
• Each update erase apps installed with SamApps, it's a normal thing, you just need to put them back with it, your generated data with these apps still present except if you delete "data" directory in TWRP.
• If multi-users, was previously enabled, it will back to disabled, you'll need to apply the patch again, your others accounts remain present with their owns preferences.