diff --git a/.github/workflows/main.yaml b/.github/workflows/main.yaml
index 1ef020616..ffcabbb92 100644
--- a/.github/workflows/main.yaml
+++ b/.github/workflows/main.yaml
@@ -79,7 +79,7 @@ jobs:
           - varname: STAX_SDK
             target: stax
     container:
-      image: zondax/ledger-app-builder:latest
+      image: zondax/ledger-app-builder:ledger-d5bfe2e793f15a826971ae9de2adcad524df3e8e
       env:
         SDK_VARNAME: ${{ matrix.sdk.varname }}
       options: --user ${{ needs.configure.outputs.uid_gid }}
diff --git a/Justfile b/Justfile
index eb64b34bb..786e73ea1 100644
--- a/Justfile
+++ b/Justfile
@@ -52,3 +52,46 @@ cargo *cmd='':
     cargo {{cmd}}
 
 insta: (cargo "insta test --review")
+
+_ztest-ci:
+    #!/bin/env bash
+    pushd zemu
+    TESTS=`yarn test --listTests --json | head -n 3 | tail -n 1 | jq -r '.[]'`
+
+    has_failed=0
+    outputs=()
+
+    for file in ${TESTS[@]}; do
+        output=`yarn jest "$file" --maxConcurrency 2 2>&1`
+        exit=$?
+
+        outputs+=("$output")
+        if [ $exit -ne 0 ]; then
+            echo "=== Test $file failed ==="
+            has_failed=1
+        fi
+    done
+
+    if [ $has_failed -eq 1 ]; then
+        for i in "${!outputs[@]}"; do
+            output=$outputs[i]
+            file=$TESTS[i]
+            echo "=== Test Output for $file ==="
+            echo "$output"
+        done
+        echo "Some tests failed. See detailed output above."
+        exit 1
+    else
+        echo "All tests passed."
+        exit 0
+    fi
+
+    popd
+
+# Run the same things as a normal CI workflow
+ci:
+    just miri
+    cargo fmt -- --check
+    cargo clippy --all-targets --features "full"
+    just make clean all
+    just _ztest-ci
diff --git a/app/Makefile b/app/Makefile
index f1f698e1d..89efd3f2a 100755
--- a/app/Makefile
+++ b/app/Makefile
@@ -264,8 +264,6 @@ ifeq (,$(filter $(TARGET_NAME),TARGET_NANOS TARGET_STAX))
 	# mainnet or testnet. lets pick 
 	# the ones for mainnet for now
 	DEFINES   += BIP32_PUBKEY_VERSION=0x0488B21E
-	DEFINES   += BIP44_COIN_TYPE=0
-	DEFINES   += BIP44_COIN_TYPE_2=0
 	# The coin type bellow is not part of the btc app,
 	# but this is necesary here as avax wants support for 
 	# coin_type = 60'
diff --git a/app/c/handler.c b/app/c/handler.c
index 193a41f5d..6e5fa13c7 100644
--- a/app/c/handler.c
+++ b/app/c/handler.c
@@ -55,11 +55,6 @@ const command_descriptor_t COMMAND_DESCRIPTORS[] = {
         .ins = GET_WALLET_ADDRESS,
         .handler = (command_handler_t)handler_get_wallet_address
     },
-    {
-        .cla = CLA_APP,
-        .ins = REGISTER_WALLET,
-        .handler = (command_handler_t)handler_register_wallet
-    },
     {
         .cla = CLA_APP,
         .ins = SIGN_PSBT,
diff --git a/deps/btc b/deps/btc
index 4902a8c70..6748b6215 160000
--- a/deps/btc
+++ b/deps/btc
@@ -1 +1 @@
-Subproject commit 4902a8c70b4b4ea527c5917d9f9e2861d380d4e1
+Subproject commit 6748b621514f1188e778211f41a0a5c225d3f4e3
diff --git a/deps/dockerized_build.mk b/deps/dockerized_build.mk
index 2c22f1b8d..5ffda177d 100644
--- a/deps/dockerized_build.mk
+++ b/deps/dockerized_build.mk
@@ -47,7 +47,7 @@ $(info TESTS_ZEMU_DIR        : $(TESTS_ZEMU_DIR))
 $(info TESTS_JS_DIR          : $(TESTS_JS_DIR))
 $(info TESTS_JS_PACKAGE      : $(TESTS_JS_PACKAGE))
 
-DOCKER_IMAGE_ZONDAX=zondax/ledger-app-builder:latest
+DOCKER_IMAGE_ZONDAX=zondax/ledger-app-builder:ledger-d5bfe2e793f15a826971ae9de2adcad524df3e8e
 DOCKER_IMAGE_LEDGER=ghcr.io/ledgerhq/ledger-app-builder/ledger-app-builder:latest
 
 ifdef INTERACTIVE
diff --git a/zemu/package.json b/zemu/package.json
index 227cacb94..549331505 100644
--- a/zemu/package.json
+++ b/zemu/package.json
@@ -18,7 +18,7 @@
   "dependencies": {
     "@types/node": "^18.14.6",
     "@zondax/ledger-avalanche-app": "link:../js",
-    "@zondax/zemu": "^0.44.0"
+    "@zondax/zemu": "=0.44.0"
   },
   "devDependencies": {
     "@ethereumjs/common": "^3.1.1",