diff --git a/src/main.rs b/src/main.rs
index b1c5753..8ecd07c 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -10,6 +10,7 @@ use crypto::{get_pubkey, set_derivation_path, sign_hash};
 use context::{Ctx, RequestType};
 
 use ledger_device_sdk::io;
+use ledger_device_sdk::ui::gadgets::display_pending_review;
 
 ledger_device_sdk::set_panic!(ledger_device_sdk::exiting_panic);
 
@@ -17,6 +18,10 @@ ledger_device_sdk::set_panic!(ledger_device_sdk::exiting_panic);
 extern "C" fn sample_main() {
     let mut comm = io::Comm::new();
 
+    // Developer mode / pending review popup
+    // must be cleared with user interaction
+    display_pending_review(&mut comm);
+
     let mut ctx: Ctx = Ctx::new();
 
     loop {
@@ -60,7 +65,7 @@ fn handle_apdu(comm: &mut io::Comm, ins: Ins, ctx: &mut Ctx) -> Result<(), Reply
     }
 
     let apdu_header = comm.get_apdu_metadata();
-    if apdu_header.cla != 0x80 {
+    if apdu_header.cla != 0x5A {
         return Err(io::StatusWords::BadCla.into());
     }
 
diff --git a/test/publickey_confirm.apdu b/test/publickey_confirm.apdu
index ca20de0..ed7aada 100644
--- a/test/publickey_confirm.apdu
+++ b/test/publickey_confirm.apdu
@@ -1 +1 @@
-=> 800101001880000a55c741e9c9c47a6028800000008000000000000000
+=> 5A0101001880000a55c741e9c9c47a6028800000008000000000000000
diff --git a/test/publickey_noconfirm.apdu b/test/publickey_noconfirm.apdu
index d589422..333f7b6 100644
--- a/test/publickey_noconfirm.apdu
+++ b/test/publickey_noconfirm.apdu
@@ -1 +1 @@
-=> 800100001880000a55c741e9c9c47a6028800000008000000000000000
+=> 5A0100001880000a55c741e9c9c47a6028800000008000000000000000
diff --git a/test/sign_confirm.apdu b/test/sign_confirm.apdu
index 8cc4521..336ffcb 100644
--- a/test/sign_confirm.apdu
+++ b/test/sign_confirm.apdu
@@ -1,2 +1,2 @@
-=> 800200011880000a55c741e9c9c47a6028800000008000000000000000
-=> 800201012055b8f28706a5008d3103bcb2bfa6356e56b95c34fed265c955846670a6bb4ef0
+=> 5A0200011880000a55c741e9c9c47a6028800000008000000000000000
+=> 5A0201012055b8f28706a5008d3103bcb2bfa6356e56b95c34fed265c955846670a6bb4ef0
diff --git a/test/sign_multicall_tx.apdu b/test/sign_multicall_tx.apdu
index 31ce256..01f0e70 100644
--- a/test/sign_multicall_tx.apdu
+++ b/test/sign_multicall_tx.apdu
@@ -1,7 +1,7 @@
-=> 800300001880000a55c741e9c9c47a6028800000008000000000000000
-=> 80030100a007e00d496e324876bbc8531f2d9a82bf154d1a04a50218ee74cdd372f75a551a00000000000000000000000000000000000000000000000000038d7ea4c680000000000000000000000000000000000000000000000000534e5f474f45524c4900000000000000000000000000000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000000000000001
-=> 800302004000000000000000000000000000000000000000000000000000000000000000020000000000000000000000000000000000000000000000000000000000000004
-=> 80030300650507446de5cfcb833d4e786f3a0510deb2429ae753741a836a7efa80c9c747cb046d696e7400000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000002
-=> 80030301680507446de5cfcb833d4e786f3a0510deb2429ae753741a836a7efa80c9c747cb07617070726f766500000000000000000000000000000000000000000000000000000000000000020000000000000000000000000000000000000000000000000000000000000002
-=> 800304004007e00d496e324876bbc8531f2d9a82bf154d1a04a50218ee74cdd372f75a551a00000000000000000000000000000000000000000000000000000000000003e8
-=> 800304014007e00d496e324876bbc8531f2d9a82bf154d1a04a50218ee74cdd372f75a551a0000000000000000000000000000000000000000000000000000000000002710
+=> 5A0300001880000a55c741e9c9c47a6028800000008000000000000000
+=> 5A030100a007e00d496e324876bbc8531f2d9a82bf154d1a04a50218ee74cdd372f75a551a00000000000000000000000000000000000000000000000000038d7ea4c680000000000000000000000000000000000000000000000000534e5f474f45524c4900000000000000000000000000000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000000000000001
+=> 5A0302004000000000000000000000000000000000000000000000000000000000000000020000000000000000000000000000000000000000000000000000000000000004
+=> 5A030300650507446de5cfcb833d4e786f3a0510deb2429ae753741a836a7efa80c9c747cb046d696e7400000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000002
+=> 5A030301680507446de5cfcb833d4e786f3a0510deb2429ae753741a836a7efa80c9c747cb07617070726f766500000000000000000000000000000000000000000000000000000000000000020000000000000000000000000000000000000000000000000000000000000002
+=> 5A0304004007e00d496e324876bbc8531f2d9a82bf154d1a04a50218ee74cdd372f75a551a00000000000000000000000000000000000000000000000000000000000003e8
+=> 5A0304014007e00d496e324876bbc8531f2d9a82bf154d1a04a50218ee74cdd372f75a551a0000000000000000000000000000000000000000000000000000000000002710
diff --git a/test/sign_noconfirm.apdu b/test/sign_noconfirm.apdu
index f243a8e..c9a87b5 100644
--- a/test/sign_noconfirm.apdu
+++ b/test/sign_noconfirm.apdu
@@ -1,2 +1,2 @@
-=> 800200011880000a55c741e9c9c47a6028800000008000000000000000
-=> 800201002055b8f28706a5008d3103bcb2bfa6356e56b95c34fed265c955846670a6bb4ef0
+=> 5A0200011880000a55c741e9c9c47a6028800000008000000000000000
+=> 5A0201002055b8f28706a5008d3103bcb2bfa6356e56b95c34fed265c955846670a6bb4ef0
diff --git a/test/sign_singlecall_tx.apdu b/test/sign_singlecall_tx.apdu
index 3a7ba31..fcc3a03 100644
--- a/test/sign_singlecall_tx.apdu
+++ b/test/sign_singlecall_tx.apdu
@@ -1,5 +1,5 @@
-=> 800300001880000a55c741e9c9c47a6028800000008000000000000000
-=> 80030100A007e00d496e324876bbc8531f2d9a82bf154d1a04a50218ee74cdd372f75a551a00000000000000000000000000000000000000000000000000038d7ea4c680000000000000000000000000000000000000000000000000534e5f474f45524c4900000000000000000000000000000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000000000000001
-=> 800302004000000000000000000000000000000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000000000000002
-=> 80030300650507446de5cfcb833d4e786f3a0510deb2429ae753741a836a7efa80c9c747cb046d696e7400000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000002
-=> 800304004007e00d496e324876bbc8531f2d9a82bf154d1a04a50218ee74cdd372f75a551a00000000000000000000000000000000000000000000000000000000000003e8
+=> 5A0300001880000a55c741e9c9c47a6028800000008000000000000000
+=> 5A030100A007e00d496e324876bbc8531f2d9a82bf154d1a04a50218ee74cdd372f75a551a00000000000000000000000000000000000000000000000000038d7ea4c680000000000000000000000000000000000000000000000000534e5f474f45524c4900000000000000000000000000000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000000000000001
+=> 5A0302004000000000000000000000000000000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000000000000002
+=> 5A030300650507446de5cfcb833d4e786f3a0510deb2429ae753741a836a7efa80c9c747cb046d696e7400000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000002
+=> 5A0304004007e00d496e324876bbc8531f2d9a82bf154d1a04a50218ee74cdd372f75a551a00000000000000000000000000000000000000000000000000000000000003e8
diff --git a/test/version.apdu b/test/version.apdu
index 545805c..5fe61b4 100644
--- a/test/version.apdu
+++ b/test/version.apdu
@@ -1 +1 @@
-=> 8000000000
+=> 5A00000000