diff --git a/.github/workflows/codeql.yml b/.github/workflows/codeql.yml
index 0b240304..c9fd3208 100644
--- a/.github/workflows/codeql.yml
+++ b/.github/workflows/codeql.yml
@@ -13,7 +13,7 @@ jobs:
     name: Analyse
     strategy:
       matrix:
-        sdk: ["$NANOS_SDK", "$NANOX_SDK", "$NANOSP_SDK"]
+        sdk: ["$NANOS_SDK", "$NANOX_SDK", "$NANOSP_SDK", "$STAX_SDK"]
     runs-on: ubuntu-latest
     container:
       image: ghcr.io/ledgerhq/ledger-app-builder/ledger-app-builder-legacy:latest
diff --git a/.github/workflows/guidelines_enforcer.yml b/.github/workflows/guidelines_enforcer.yml
index b39250cb..e2dae281 100644
--- a/.github/workflows/guidelines_enforcer.yml
+++ b/.github/workflows/guidelines_enforcer.yml
@@ -23,4 +23,3 @@ jobs:
     uses: LedgerHQ/ledger-app-workflows/.github/workflows/reusable_guidelines_enforcer.yml@v1
     with:
       relative_app_directory: app
-      run_for_devices: '["nanos", "nanosp", "nanox"]'
diff --git a/Makefile b/Makefile
index c6991071..eb480bcb 100644
--- a/Makefile
+++ b/Makefile
@@ -25,6 +25,7 @@ ifeq ($(BOLOS_SDK),)
 # In this case, there is not predefined SDK and we run dockerized
 # When not using the SDK, we override and build the XL complete app
 
+ZXLIB_COMPILE_STAX ?= 1
 SUBSTRATE_PARSER_FULL ?= 1
 include $(CURDIR)/deps/ledger-zxlib/dockerized_build.mk
 
@@ -47,6 +48,5 @@ zemu_install: tests_tools_build
 test_all:
 	make zemu_install
 	SUBSTRATE_PARSER_FULL=1 make
-	make clean_glyphs
 	SUBSTRATE_PARSER_FULL=1 SUPPORT_SR25519=1 make buildS
 	make zemu_test
diff --git a/app/Makefile.version b/app/Makefile.version
index bca4fcaa..323acee5 100644
--- a/app/Makefile.version
+++ b/app/Makefile.version
@@ -3,4 +3,4 @@ APPVERSION_M=22
 # This is the `spec_version` field of `Runtime`
 APPVERSION_N=9420
 # This is the patch version of this release
-APPVERSION_P=0
+APPVERSION_P=1
diff --git a/app/glyphs/icon_stax_32.gif b/app/glyphs/icon_stax_32.gif
new file mode 100644
index 00000000..d2c7ea85
Binary files /dev/null and b/app/glyphs/icon_stax_32.gif differ
diff --git a/app/glyphs/icon_stax_64.gif b/app/glyphs/icon_stax_64.gif
new file mode 100644
index 00000000..96096909
Binary files /dev/null and b/app/glyphs/icon_stax_64.gif differ
diff --git a/app/src/common/tx.c b/app/src/common/tx.c
index 7a979b98..992558b1 100644
--- a/app/src/common/tx.c
+++ b/app/src/common/tx.c
@@ -21,7 +21,7 @@
 #include <string.h>
 #include "zxmacros.h"
 
-#if defined(TARGET_NANOX) || defined(TARGET_NANOS2)
+#if defined(TARGET_NANOX) || defined(TARGET_NANOS2) || defined(TARGET_STAX)
 #define RAM_BUFFER_SIZE 8192
 #define FLASH_BUFFER_SIZE 16384
 #elif defined(TARGET_NANOS)
@@ -37,7 +37,7 @@ typedef struct {
     uint8_t buffer[FLASH_BUFFER_SIZE];
 } storage_t;
 
-#if defined(TARGET_NANOS) || defined(TARGET_NANOX) || defined(TARGET_NANOS2)
+#if defined(TARGET_NANOS) || defined(TARGET_NANOX) || defined(TARGET_NANOS2) || defined(TARGET_STAX)
 storage_t NV_CONST N_appdata_impl __attribute__ ((aligned(64)));
 #define N_appdata (*(NV_VOLATILE storage_t *)PIC(&N_appdata_impl))
 #endif
diff --git a/app/src/crypto_helper.c b/app/src/crypto_helper.c
index 64b30d15..a548ba14 100644
--- a/app/src/crypto_helper.c
+++ b/app/src/crypto_helper.c
@@ -17,7 +17,7 @@
 #include "crypto_helper.h"
 #include "base58.h"
 
-#if defined(TARGET_NANOS) || defined(TARGET_NANOX) || defined(TARGET_NANOS2)
+#if defined(TARGET_NANOS) || defined(TARGET_NANOX) || defined(TARGET_NANOS2) || defined(TARGET_STAX)
 #include "cx.h"
 
 int ss58hash(const unsigned char *in, unsigned int inLen,
diff --git a/app/src/parser_txdef.h b/app/src/parser_txdef.h
index 051e6302..a66f54bd 100644
--- a/app/src/parser_txdef.h
+++ b/app/src/parser_txdef.h
@@ -23,7 +23,7 @@ extern "C" {
 #include <stddef.h>
 #include "substrate_methods.h"
 
-#if defined(TARGET_NANOX) || defined(TARGET_NANOS2)
+#if defined(TARGET_NANOX) || defined(TARGET_NANOS2) || defined(TARGET_STAX)
 #define MAX_CALL_NESTING_SIZE 6
 #define MAX_CALL_VEC_SIZE 6
 #else
diff --git a/app/src/substrate/substrate_types.c b/app/src/substrate/substrate_types.c
index 81959391..76ba04fc 100644
--- a/app/src/substrate/substrate_types.c
+++ b/app/src/substrate/substrate_types.c
@@ -1334,6 +1334,7 @@ parser_error_t _readMetadataOwner(parser_context_t* c, pd_MetadataOwner_t* v)
 
 parser_error_t _readOptionMultiSigner(parser_context_t* c, pd_OptionMultiSigner_t* v)
 {
+    CHECK_INPUT()
     CHECK_ERROR(_readUInt8(c, &v->some))
     if (v->some > 0) {
         CHECK_ERROR(_readMultiSigner(c, &v->verifier))
@@ -1583,6 +1584,7 @@ parser_error_t _readVecu8(parser_context_t* c, pd_Vecu8_t* v) {
 
 parser_error_t _readOptionNetworkIdV3(parser_context_t* c, pd_OptionNetworkIdV3_t* v)
 {
+    CHECK_INPUT()
     CHECK_ERROR(_readUInt8(c, &v->some))
     if (v->some > 0) {
         CHECK_ERROR(_readNetworkIdV3(c, &v->contained))
@@ -1592,6 +1594,7 @@ parser_error_t _readOptionNetworkIdV3(parser_context_t* c, pd_OptionNetworkIdV3_
 
 parser_error_t _readOptionu8_array_20(parser_context_t* c, pd_Optionu8_array_20_t* v)
 {
+    CHECK_INPUT()
     CHECK_ERROR(_readUInt8(c, &v->some))
     if (v->some > 0) {
         CHECK_ERROR(_readu8_array_20(c, &v->contained))
@@ -1601,6 +1604,7 @@ parser_error_t _readOptionu8_array_20(parser_context_t* c, pd_Optionu8_array_20_
 
 parser_error_t _readOptionMultiSignature(parser_context_t* c, pd_OptionMultiSignature_t* v)
 {
+    CHECK_INPUT()
     CHECK_ERROR(_readUInt8(c, &v->some))
     if (v->some > 0) {
         CHECK_ERROR(_readMultiSignature(c, &v->contained))
@@ -1610,6 +1614,7 @@ parser_error_t _readOptionMultiSignature(parser_context_t* c, pd_OptionMultiSign
 
 parser_error_t _readOptionTimepoint(parser_context_t* c, pd_OptionTimepoint_t* v)
 {
+    CHECK_INPUT()
     CHECK_ERROR(_readUInt8(c, &v->some))
     if (v->some > 0) {
         CHECK_ERROR(_readTimepoint(c, &v->contained))
@@ -1619,6 +1624,7 @@ parser_error_t _readOptionTimepoint(parser_context_t* c, pd_OptionTimepoint_t* v
 
 parser_error_t _readOptionTuplePerbillAccountId(parser_context_t* c, pd_OptionTuplePerbillAccountId_t* v)
 {
+    CHECK_INPUT()
     CHECK_ERROR(_readUInt8(c, &v->some))
     if (v->some > 0) {
         CHECK_ERROR(_readTuplePerbillAccountId(c, &v->contained))
@@ -1628,6 +1634,7 @@ parser_error_t _readOptionTuplePerbillAccountId(parser_context_t* c, pd_OptionTu
 
 parser_error_t _readOptionAccountId(parser_context_t* c, pd_OptionAccountId_t* v)
 {
+    CHECK_INPUT()
     CHECK_ERROR(_readUInt8(c, &v->some))
     if (v->some > 0) {
         CHECK_ERROR(_readAccountId(c, &v->contained))
@@ -1637,6 +1644,7 @@ parser_error_t _readOptionAccountId(parser_context_t* c, pd_OptionAccountId_t* v
 
 parser_error_t _readOptionClassOf(parser_context_t* c, pd_OptionClassOf_t* v)
 {
+    CHECK_INPUT()
     CHECK_ERROR(_readUInt8(c, &v->some))
     if (v->some > 0) {
         CHECK_ERROR(_readClassOf(c, &v->contained))
@@ -1646,6 +1654,7 @@ parser_error_t _readOptionClassOf(parser_context_t* c, pd_OptionClassOf_t* v)
 
 parser_error_t _readOptionPerquintill(parser_context_t* c, pd_OptionPerquintill_t* v)
 {
+    CHECK_INPUT()
     CHECK_ERROR(_readUInt8(c, &v->some))
     if (v->some > 0) {
         CHECK_ERROR(_readPerquintill(c, &v->contained))
@@ -1655,6 +1664,7 @@ parser_error_t _readOptionPerquintill(parser_context_t* c, pd_OptionPerquintill_
 
 parser_error_t _readOptionPreimageHash(parser_context_t* c, pd_OptionPreimageHash_t* v)
 {
+    CHECK_INPUT()
     CHECK_ERROR(_readUInt8(c, &v->some))
     if (v->some > 0) {
         CHECK_ERROR(_readPreimageHash(c, &v->contained))
@@ -1664,6 +1674,7 @@ parser_error_t _readOptionPreimageHash(parser_context_t* c, pd_OptionPreimageHas
 
 parser_error_t _readOptionProxyType(parser_context_t* c, pd_OptionProxyType_t* v)
 {
+    CHECK_INPUT()
     CHECK_ERROR(_readUInt8(c, &v->some))
     if (v->some > 0) {
         CHECK_ERROR(_readProxyType(c, &v->contained))
@@ -1673,6 +1684,7 @@ parser_error_t _readOptionProxyType(parser_context_t* c, pd_OptionProxyType_t* v
 
 parser_error_t _readOptionReferendumIndex(parser_context_t* c, pd_OptionReferendumIndex_t* v)
 {
+    CHECK_INPUT()
     CHECK_ERROR(_readUInt8(c, &v->some))
     if (v->some > 0) {
         CHECK_ERROR(_readReferendumIndex(c, &v->contained))
@@ -1682,6 +1694,7 @@ parser_error_t _readOptionReferendumIndex(parser_context_t* c, pd_OptionReferend
 
 parser_error_t _readOptionu32(parser_context_t* c, pd_Optionu32_t* v)
 {
+    CHECK_INPUT()
     CHECK_ERROR(_readUInt8(c, &v->some))
     if (v->some > 0) {
         CHECK_ERROR(_readu32(c, &v->contained))
diff --git a/app/stax_icon.gif b/app/stax_icon.gif
new file mode 100644
index 00000000..d2c7ea85
Binary files /dev/null and b/app/stax_icon.gif differ
diff --git a/deps/ledger-zxlib b/deps/ledger-zxlib
index cb80e302..8436f286 160000
--- a/deps/ledger-zxlib
+++ b/deps/ledger-zxlib
@@ -1 +1 @@
-Subproject commit cb80e3020475b14a29338e964c55d82eae048df6
+Subproject commit 8436f2869835a38bb7a08e8c732d3cdbe3114c6a
diff --git a/deps/nanos-secure-sdk b/deps/nanos-secure-sdk
index 8b6fdc43..8663123a 160000
--- a/deps/nanos-secure-sdk
+++ b/deps/nanos-secure-sdk
@@ -1 +1 @@
-Subproject commit 8b6fdc43b89ade975a032ddbe710ad872894956f
+Subproject commit 8663123a243894bb1652685e44a787f7df1b9447
diff --git a/deps/nanosplus-secure-sdk b/deps/nanosplus-secure-sdk
index 9a051d39..4d83d579 160000
--- a/deps/nanosplus-secure-sdk
+++ b/deps/nanosplus-secure-sdk
@@ -1 +1 @@
-Subproject commit 9a051d39953fd2406b4910abc160942dee2be320
+Subproject commit 4d83d57997b60567da495decec673735d9511a9e
diff --git a/deps/nanox-secure-sdk b/deps/nanox-secure-sdk
index 9a051d39..4d83d579 160000
--- a/deps/nanox-secure-sdk
+++ b/deps/nanox-secure-sdk
@@ -1 +1 @@
-Subproject commit 9a051d39953fd2406b4910abc160942dee2be320
+Subproject commit 4d83d57997b60567da495decec673735d9511a9e
diff --git a/tests_zemu/package.json b/tests_zemu/package.json
index 3a16ac43..5945fa9e 100644
--- a/tests_zemu/package.json
+++ b/tests_zemu/package.json
@@ -15,11 +15,11 @@
   ],
   "scripts": {
     "clean": "ts-node tests/pullImageKillOld.ts",
-    "test": "yarn clean && jest"
+    "test": "yarn clean && jest --maxConcurrency 2"
   },
   "dependencies": {
     "@zondax/ledger-substrate": "^0.40.5",
-    "@zondax/zemu": "^0.42.0"
+    "@zondax/zemu": "^0.42.1"
   },
   "devDependencies": {
     "@types/jest": "^29.2.1",
diff --git a/tests_zemu/snapshots/s-mainmenu/00004.png b/tests_zemu/snapshots/s-mainmenu/00004.png
index 32d66839..242d8378 100644
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diff --git a/tests_zemu/snapshots/s-mainmenu/00010.png b/tests_zemu/snapshots/s-mainmenu/00010.png
index 32d66839..242d8378 100644
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diff --git a/tests_zemu/snapshots/sp-mainmenu/00004.png b/tests_zemu/snapshots/sp-mainmenu/00004.png
index 7ee8dfc0..31c70ca6 100644
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diff --git a/tests_zemu/snapshots/sp-mainmenu/00010.png b/tests_zemu/snapshots/sp-mainmenu/00010.png
index 7ee8dfc0..31c70ca6 100644
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diff --git a/tests_zemu/snapshots/st-balances_transfer/00000.png b/tests_zemu/snapshots/st-balances_transfer/00000.png
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index 00000000..e14ba70d
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diff --git a/tests_zemu/snapshots/x-mainmenu/00004.png b/tests_zemu/snapshots/x-mainmenu/00004.png
index 7ee8dfc0..31c70ca6 100644
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diff --git a/tests_zemu/snapshots/x-mainmenu/00010.png b/tests_zemu/snapshots/x-mainmenu/00010.png
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diff --git a/tests_zemu/tests/common.ts b/tests_zemu/tests/common.ts
index ea588f15..123a0093 100644
--- a/tests_zemu/tests/common.ts
+++ b/tests_zemu/tests/common.ts
@@ -7,9 +7,11 @@ export const APP_SEED = 'equip will roof matter pink blind book anxiety banner e
 const APP_PATH_S = resolve('../app/output/app_s.elf')
 const APP_PATH_X = resolve('../app/output/app_x.elf')
 const APP_PATH_SP = resolve('../app/output/app_s2.elf')
+const APP_PATH_ST = resolve('../app/output/app_stax.elf')
 
 export const models: IDeviceModel[] = [
   { name: 'nanos', prefix: 'S', path: APP_PATH_S },
   { name: 'nanox', prefix: 'X', path: APP_PATH_X },
   { name: 'nanosp', prefix: 'SP', path: APP_PATH_SP },
+  { name: 'stax', prefix: 'ST', path: APP_PATH_ST },
 ]
diff --git a/tests_zemu/tests/standard.test.ts b/tests_zemu/tests/standard.test.ts
index d3a6d999..e7002780 100644
--- a/tests_zemu/tests/standard.test.ts
+++ b/tests_zemu/tests/standard.test.ts
@@ -14,7 +14,7 @@
  *  limitations under the License.
  ******************************************************************************* */
 
-import Zemu, { DEFAULT_START_OPTIONS, zondaxMainmenuNavigation } from '@zondax/zemu'
+import Zemu, { ButtonKind, DEFAULT_START_OPTIONS, zondaxMainmenuNavigation } from '@zondax/zemu'
 import { newKusamaApp } from '@zondax/ledger-substrate'
 import { APP_SEED, models } from './common'
 
@@ -94,7 +94,12 @@ describe('Standard', function () {
   test.concurrent.each(models)('show address', async function (m) {
     const sim = new Zemu(m.path)
     try {
-      await sim.start({ ...defaultOptions, model: m.name })
+      await sim.start({
+        ...defaultOptions,
+        model: m.name,
+        approveKeyword: m.name === 'stax' ? 'QR' : '',
+        approveAction: ButtonKind.ApproveTapButton,
+      })
       const app = newKusamaApp(sim.getTransport())
 
       const respRequest = app.getAddress(0x80000000, 0x80000000, 0x80000000, true)
@@ -119,7 +124,11 @@ describe('Standard', function () {
   test.concurrent.each(models)('show address - reject', async function (m) {
     const sim = new Zemu(m.path)
     try {
-      await sim.start({ ...defaultOptions, model: m.name })
+      await sim.start({
+        ...defaultOptions,
+        model: m.name,
+        rejectKeyword: m.name === 'stax' ? 'QR' : '',
+      })
       const app = newKusamaApp(sim.getTransport())
 
       const respRequest = app.getAddress(0x80000000, 0x80000000, 0x80000000, true)