diff --git a/.github/workflows/core.yml b/.github/workflows/core.yml
index 210e25d723..d864e48f7b 100644
--- a/.github/workflows/core.yml
+++ b/.github/workflows/core.yml
@@ -54,10 +54,19 @@ jobs:
         model: [T2T1, T3B1, T3T1, T3W1]
         coins: [universal, btconly]
         type: ${{ fromJSON(github.event_name == 'schedule' && '["normal", "debuglink", "production"]' || '["normal", "debuglink"]') }}
+        protocol: [v1]
         include:
           - model: D001
             coins: universal
             type: normal
+          - model: T2T1
+            coins: universal
+            type: debuglink
+            protocol: v2
+          - model: T2T1
+            coins: btconly
+            type: debuglink
+            protocol: v2
         exclude:
           - model: T3W1
             type: production
@@ -67,6 +76,7 @@ jobs:
       PYOPT: ${{ matrix.type == 'debuglink' && '0' || '1' }}
       PRODUCTION: ${{ matrix.type == 'production' && '1' || '0' }}
       BOOTLOADER_DEVEL: ${{ matrix.model == 'T3W1' && '1' || '0' }}
+      THP: ${{ matrix.protocol == 'v2' && '1' || '0'}}
     steps:
       - uses: actions/checkout@v4
         with:
@@ -87,7 +97,7 @@ jobs:
         if: matrix.coins == 'btconly' && matrix.type != 'debuglink'
       - uses: actions/upload-artifact@v4
         with:
-          name: core-firmware-${{ matrix.model }}-${{ matrix.coins }}-${{ matrix.type }}
+          name: core-firmware-${{ matrix.model }}-${{ matrix.coins }}-${{ matrix.type }}-protocol_${{ matrix.protocol }}
           path: |
             core/build/boardloader/*.bin
             core/build/bootloader/*.bin
@@ -109,15 +119,28 @@ jobs:
         # type: [normal, debuglink]
         type: [debuglink]
         asan: ${{ fromJSON(needs.param.outputs.asan) }}
+        protocol: [v1]
         exclude:
           - type: normal
             asan: asan
+        include:
+          - model: T2T1
+            coins: universal
+            type: debuglink
+            asan: noasan
+            protocol: v2
+          - model: T2T1
+            coins: btconly
+            type: debuglink
+            asan: noasan
+            protocol: v2
     env:
       TREZOR_MODEL: ${{ matrix.model == 'T2T1' && 'T' || matrix.model }}
       BITCOIN_ONLY: ${{ matrix.coins == 'universal' && '0' || '1' }}
       PYOPT: ${{ matrix.type == 'debuglink' && '0' || '1' }}
       ADDRESS_SANITIZER: ${{ matrix.asan == 'asan' && '1' || '0' }}
       LSAN_OPTIONS: "suppressions=../../asan_suppressions.txt"
+      THP: ${{ matrix.protocol == 'v2' && '1' || '0'}}
     steps:
       - uses: actions/checkout@v4
         with:
@@ -129,7 +152,7 @@ jobs:
       - run: cp core/build/unix/trezor-emu-core core/build/unix/trezor-emu-core-${{ matrix.model }}-${{ matrix.coins }}
       - uses: actions/upload-artifact@v4
         with:
-          name: core-emu-${{ matrix.model }}-${{ matrix.coins }}-${{ matrix.type }}-${{ matrix.asan }}
+          name: core-emu-${{ matrix.model }}-${{ matrix.coins }}-${{ matrix.type }}-${{ matrix.asan }}-protocol_${{ matrix.protocol }}
           path: |
             core/build/unix/trezor-emu-core*
             core/build/bootloader_emu/bootloader.elf
@@ -174,7 +197,7 @@ jobs:
           retention-days: 2
 
   core_unit_python_test:
-    name: Python unit tests
+    name: Python unit tests (${{ matrix.model }}, ${{ matrix.asan }}, protocol_${{ matrix.protocol}})
     runs-on: ubuntu-latest
     needs: param
     strategy:
@@ -182,10 +205,12 @@ jobs:
       matrix:
         model: [T2T1, T3B1, T3T1, T3W1]
         asan: ${{ fromJSON(needs.param.outputs.asan) }}
+        protocol: [v1, v2]
     env:
       TREZOR_MODEL: ${{ matrix.model == 'T2T1' && 'T' || matrix.model }}
       ADDRESS_SANITIZER: ${{ matrix.asan == 'asan' && '1' || '0' }}
       LSAN_OPTIONS: "suppressions=../../asan_suppressions.txt"
+      THP: ${{ matrix.protocol == 'v2' && '1' || '0'}}
     steps:
       - uses: actions/checkout@v4
         with:
@@ -195,7 +220,7 @@ jobs:
       - run: nix-shell --run "poetry run make -C core test"
 
   core_unit_rust_test:
-    name: Rust unit tests
+    name: Rust unit tests (${{ matrix.model }}, ${{ matrix.asan }}, protocol_${{ matrix.protocol}})
     runs-on: ubuntu-latest
     needs:
       - param
@@ -205,12 +230,14 @@ jobs:
       matrix:
         model: [T2T1, T3B1, T3T1, T3W1]
         asan: ${{ fromJSON(needs.param.outputs.asan) }}
+        protocol: [v1, v2]
     env:
       TREZOR_MODEL: ${{ matrix.model == 'T2T1' && 'T' || matrix.model }}
       ADDRESS_SANITIZER: ${{ matrix.asan == 'asan' && '1' || '0' }}
       RUSTC_BOOTSTRAP: ${{ matrix.asan == 'asan' && '1' || '0' }}
       RUSTFLAGS: ${{ matrix.asan == 'asan' && '-Z sanitizer=address' || '' }}
       LSAN_OPTIONS: "suppressions=../../asan_suppressions.txt"
+      THP: ${{ matrix.protocol == 'v2' && '1' || '0'}}
     steps:
       - uses: actions/checkout@v4
         with:
@@ -234,7 +261,7 @@ jobs:
           submodules: recursive
       - uses: actions/download-artifact@v4
         with:
-          name: core-emu-${{ matrix.model }}-universal-debuglink-noasan
+          name: core-emu-${{ matrix.model }}-universal-debuglink-noasan-protocol_v1
           path: core/build
       - run: chmod +x core/build/unix/trezor-emu-core*
       - uses: ./.github/actions/environment
@@ -257,6 +284,13 @@ jobs:
         coins: [universal, btconly]
         asan: ${{ fromJSON(needs.param.outputs.asan) }}
         lang: ${{ fromJSON(needs.param.outputs.test_lang) }}
+        protocol: [v1]
+        include:
+          - model: T2T1
+            coins: universal
+            asan: noasan
+            lang: en
+            protocol: v2
     env:
       TREZOR_PROFILING: ${{ matrix.asan == 'noasan' && '1' || '0' }}
       TREZOR_MODEL: ${{ matrix.model == 'T2T1' && 'T' || matrix.model }}
@@ -265,13 +299,14 @@ jobs:
       PYTEST_TIMEOUT: ${{ matrix.asan == 'asan' && 600 || 400 }}
       ACTIONS_DO_UI_TEST: ${{ matrix.coins == 'universal' && matrix.asan == 'noasan' }}
       TEST_LANG: ${{ matrix.lang }}
+      THP: ${{ matrix.protocol == 'v2' && '1' || '0'}}
     steps:
       - uses: actions/checkout@v4
         with:
           submodules: recursive
       - uses: actions/download-artifact@v4
         with:
-          name: core-emu-${{ matrix.model }}-${{ matrix.coins }}-debuglink-${{ matrix.asan }}
+          name: core-emu-${{ matrix.model }}-${{ matrix.coins }}-debuglink-${{ matrix.asan }}-protocol_${{ matrix.protocol }}
           path: core/build
       - run: chmod +x core/build/unix/trezor-emu-core*
       - uses: ./.github/actions/environment
@@ -280,7 +315,7 @@ jobs:
         if: failure()
       - uses: actions/upload-artifact@v4
         with:
-          name: core-test-device-${{ matrix.model }}-${{ matrix.coins }}-${{ matrix.lang }}-${{ matrix.asan }}
+          name: core-test-device-${{ matrix.model }}-${{ matrix.coins }}-${{ matrix.lang }}-${{ matrix.asan }}-protocol_${{ matrix.protocol }}
           path: tests/trezor.log
           retention-days: 7
         if: always()
@@ -319,7 +354,7 @@ jobs:
           submodules: recursive
       - uses: actions/download-artifact@v4
         with:
-          name: core-emu-${{ matrix.model }}-universal-debuglink-${{ matrix.asan }}
+          name: core-emu-${{ matrix.model }}-universal-debuglink-${{ matrix.asan }}-protocol_v1
           path: core/build
       - run: chmod +x core/build/unix/trezor-emu-core*
       - uses: ./.github/actions/environment
@@ -329,7 +364,7 @@ jobs:
         if: ${{ matrix.asan == 'asan' }}
       - uses: actions/upload-artifact@v4
         with:
-          name: core-test-click-${{ matrix.model }}-${{ matrix.lang }}-${{ matrix.asan }}
+          name: core-test-click-${{ matrix.model }}-${{ matrix.lang }}-${{ matrix.asan }}-protocol_v1
           path: tests/trezor.log
           retention-days: 7
         if: always()
@@ -367,7 +402,7 @@ jobs:
           submodules: recursive
       - uses: actions/download-artifact@v4
         with:
-          name: core-emu-${{ matrix.model }}-universal-debuglink-${{ matrix.asan }}
+          name: core-emu-${{ matrix.model }}-universal-debuglink-${{ matrix.asan }}-protocol_v1
           path: core/build
       - run: chmod +x core/build/unix/trezor-emu-core*
       - uses: ./.github/actions/environment
@@ -397,7 +432,7 @@ jobs:
           submodules: recursive
       - uses: actions/download-artifact@v4
         with:
-          name: core-emu-${{ matrix.model }}-universal-debuglink-${{ matrix.asan }}
+          name: core-emu-${{ matrix.model }}-universal-debuglink-${{ matrix.asan }}-protocol_v1
           path: core/build
       - run: chmod +x core/build/unix/trezor-emu-core*
       - uses: ./.github/actions/environment
@@ -430,7 +465,7 @@ jobs:
           submodules: recursive
       - uses: actions/download-artifact@v4
         with:
-          name: core-emu-${{ matrix.model }}-universal-debuglink-noasan
+          name: core-emu-${{ matrix.model }}-universal-debuglink-noasan-protocol_v1
           path: core/build
       - run: chmod +x core/build/unix/trezor-emu-core*
       - uses: ./.github/actions/environment  # XXX poetry maybe not needed
@@ -488,7 +523,7 @@ jobs:
           submodules: recursive
       - uses: actions/download-artifact@v4
         with:
-          name: core-firmware-${{ matrix.model }}-universal-normal  # FIXME: s/normal/debuglink/
+          name: core-firmware-${{ matrix.model }}-universal-normal-protocol_v1  # FIXME: s/normal/debuglink/
           path: core/build
       - uses: ./.github/actions/environment
       - run: nix-shell --run "poetry run core/tools/size/checker.py core/build/firmware/firmware.elf"
@@ -512,7 +547,7 @@ jobs:
           fetch-depth: 0
       - uses: actions/download-artifact@v4
         with:
-          name: core-firmware-${{ matrix.model }}-universal-normal
+          name: core-firmware-${{ matrix.model }}-universal-normal-protocol_v1
           path: core/build
       - uses: ./.github/actions/environment
       - run: nix-shell --run "poetry run core/tools/size/compare_master.py core/build/firmware/firmware.elf -r firmware_elf_size_report.txt"
@@ -543,7 +578,7 @@ jobs:
           submodules: recursive
       - uses: actions/download-artifact@v4
         with:
-          name: core-emu-${{ matrix.model }}-universal-debuglink-${{ matrix.asan }}
+          name: core-emu-${{ matrix.model }}-universal-debuglink-${{ matrix.asan }}-protocol_v1
           path: core/build
       - run: chmod +x core/build/unix/trezor-emu-core*
       - uses: cachix/install-nix-action@v23
@@ -584,7 +619,7 @@ jobs:
           submodules: recursive
       - uses: actions/download-artifact@v4
         with:
-          name: core-emu-${{ matrix.model }}-universal-debuglink-${{ matrix.asan }}
+          name: core-emu-${{ matrix.model }}-universal-debuglink-${{ matrix.asan }}-protocol_v1
           path: core/build
       - run: chmod +x core/build/unix/trezor-emu-core*
       - uses: ./.github/actions/environment
@@ -619,7 +654,7 @@ jobs:
           submodules: recursive
       - uses: actions/download-artifact@v4
         with:
-          name: core-emu-${{ matrix.model }}-universal-debuglink-${{ matrix.asan }}
+          name: core-emu-${{ matrix.model }}-universal-debuglink-${{ matrix.asan }}-protocol_v1
           path: core/build
       - run: chmod +x core/build/unix/trezor-emu-core*
       - uses: ./.github/actions/environment
@@ -725,7 +760,7 @@ jobs:
     steps:
       - uses: actions/download-artifact@v4
         with:
-          pattern: core-emu*debuglink-noasan
+          pattern: core-emu*debuglink-noasan-protocol_v*
           merge-multiple: true
       - name: Configure aws credentials
         uses: aws-actions/configure-aws-credentials@v4
@@ -748,7 +783,7 @@ jobs:
     steps:
       - uses: actions/download-artifact@v4
         with:
-          pattern: core-emu*debuglink-noasan
+          pattern: core-emu*debuglink-noasan-protocol_v*
           merge-multiple: true
       - name: Configure aws credentials
         uses: aws-actions/configure-aws-credentials@v4
diff --git a/ci/build.yml b/ci/build.yml
index 8faa98da55..3f2861edf0 100644
--- a/ci/build.yml
+++ b/ci/build.yml
@@ -307,6 +307,7 @@ core unix frozen debug build:
   needs: []
   variables:
     PYOPT: "0"
+    THP: "1"
   script:
     - $NIX_SHELL --run "poetry run make -C core build_unix_frozen"
   artifacts:
diff --git a/docs/ci/jobs.md b/docs/ci/jobs.md
index 7a57340f24..2325549c2a 100644
--- a/docs/ci/jobs.md
+++ b/docs/ci/jobs.md
@@ -106,44 +106,44 @@ Frozen version. That means you do not need any other files to run it,
 it is just a single binary file that you can execute directly.
 **Are you looking for a Trezor T emulator? This is most likely it.**
 
-### [core unix frozen R debug build](https://github.com/trezor/trezor-firmware/blob/master/ci/build.yml#L317)
+### [core unix frozen R debug build](https://github.com/trezor/trezor-firmware/blob/master/ci/build.yml#L318)
 
-### [core unix frozen T3T1 debug build](https://github.com/trezor/trezor-firmware/blob/master/ci/build.yml#L332)
+### [core unix frozen T3T1 debug build](https://github.com/trezor/trezor-firmware/blob/master/ci/build.yml#L333)
 
-### [core unix frozen R debug build arm](https://github.com/trezor/trezor-firmware/blob/master/ci/build.yml#L346)
+### [core unix frozen R debug build arm](https://github.com/trezor/trezor-firmware/blob/master/ci/build.yml#L347)
 
-### [core unix frozen T3T1 debug build arm](https://github.com/trezor/trezor-firmware/blob/master/ci/build.yml#L369)
+### [core unix frozen T3T1 debug build arm](https://github.com/trezor/trezor-firmware/blob/master/ci/build.yml#L370)
 
-### [core unix frozen debug asan build](https://github.com/trezor/trezor-firmware/blob/master/ci/build.yml#L392)
+### [core unix frozen debug asan build](https://github.com/trezor/trezor-firmware/blob/master/ci/build.yml#L393)
 
-### [core unix frozen debug build arm](https://github.com/trezor/trezor-firmware/blob/master/ci/build.yml#L408)
+### [core unix frozen debug build arm](https://github.com/trezor/trezor-firmware/blob/master/ci/build.yml#L409)
 
-### [core macos frozen regular build](https://github.com/trezor/trezor-firmware/blob/master/ci/build.yml#L430)
+### [core macos frozen regular build](https://github.com/trezor/trezor-firmware/blob/master/ci/build.yml#L431)
 
-### [crypto build](https://github.com/trezor/trezor-firmware/blob/master/ci/build.yml#L455)
+### [crypto build](https://github.com/trezor/trezor-firmware/blob/master/ci/build.yml#L456)
 Build of our cryptographic library, which is then incorporated into the other builds.
 
-### [legacy fw regular build](https://github.com/trezor/trezor-firmware/blob/master/ci/build.yml#L485)
+### [legacy fw regular build](https://github.com/trezor/trezor-firmware/blob/master/ci/build.yml#L486)
 
-### [legacy fw regular debug build](https://github.com/trezor/trezor-firmware/blob/master/ci/build.yml#L501)
+### [legacy fw regular debug build](https://github.com/trezor/trezor-firmware/blob/master/ci/build.yml#L502)
 
-### [legacy fw btconly build](https://github.com/trezor/trezor-firmware/blob/master/ci/build.yml#L518)
+### [legacy fw btconly build](https://github.com/trezor/trezor-firmware/blob/master/ci/build.yml#L519)
 
-### [legacy fw btconly debug build](https://github.com/trezor/trezor-firmware/blob/master/ci/build.yml#L537)
+### [legacy fw btconly debug build](https://github.com/trezor/trezor-firmware/blob/master/ci/build.yml#L538)
 
-### [legacy emu regular debug build](https://github.com/trezor/trezor-firmware/blob/master/ci/build.yml#L558)
+### [legacy emu regular debug build](https://github.com/trezor/trezor-firmware/blob/master/ci/build.yml#L559)
 Regular version (not only Bitcoin) of above.
 **Are you looking for a Trezor One emulator? This is most likely it.**
 
-### [legacy emu regular debug asan build](https://github.com/trezor/trezor-firmware/blob/master/ci/build.yml#L573)
+### [legacy emu regular debug asan build](https://github.com/trezor/trezor-firmware/blob/master/ci/build.yml#L574)
 
-### [legacy emu regular debug build arm](https://github.com/trezor/trezor-firmware/blob/master/ci/build.yml#L591)
+### [legacy emu regular debug build arm](https://github.com/trezor/trezor-firmware/blob/master/ci/build.yml#L592)
 
-### [legacy emu btconly debug build](https://github.com/trezor/trezor-firmware/blob/master/ci/build.yml#L617)
+### [legacy emu btconly debug build](https://github.com/trezor/trezor-firmware/blob/master/ci/build.yml#L618)
 Build of Legacy into UNIX emulator. Use keyboard arrows to emulate button presses.
 Bitcoin-only version.
 
-### [legacy emu btconly debug asan build](https://github.com/trezor/trezor-firmware/blob/master/ci/build.yml#L634)
+### [legacy emu btconly debug asan build](https://github.com/trezor/trezor-firmware/blob/master/ci/build.yml#L635)
 
 ---
 ## TEST stage - [test.yml](https://github.com/trezor/trezor-firmware/blob/master/ci/test.yml)