diff --git a/firmware/fsm.h b/firmware/fsm.h
index 6bdb22c490..b8af6d1549 100644
--- a/firmware/fsm.h
+++ b/firmware/fsm.h
@@ -93,8 +93,6 @@ void fsm_msgStellarChangeTrustOp(StellarChangeTrustOp *msg);
 void fsm_msgStellarAllowTrustOp(StellarAllowTrustOp *msg);
 void fsm_msgStellarAccountMergeOp(StellarAccountMergeOp *msg);
 void fsm_msgStellarManageDataOp(StellarManageDataOp *msg);
-void fsm_msgStellarSignMessage(StellarSignMessage *msg);
-void fsm_msgStellarVerifyMessage(StellarVerifyMessage *msg);
 void fsm_msgStellarBumpSequenceOp(StellarBumpSequenceOp *msg);
 
 // debug message functions
diff --git a/firmware/fsm_msg_stellar.h b/firmware/fsm_msg_stellar.h
index de92b76b65..d621323a52 100644
--- a/firmware/fsm_msg_stellar.h
+++ b/firmware/fsm_msg_stellar.h
@@ -19,46 +19,6 @@ void fsm_msgStellarGetPublicKey(StellarGetPublicKey *msg)
     layoutHome();
 }
 
-void fsm_msgStellarSignMessage(StellarSignMessage *msg)
-{
-    RESP_INIT(StellarMessageSignature);
-
-    CHECK_INITIALIZED
-
-	layoutSignMessage(msg->message.bytes, msg->message.size);
-	if (!protectButton(ButtonRequestType_ButtonRequest_ProtectCall, false)) {
-		fsm_sendFailure(FailureType_Failure_ActionCancelled, NULL);
-		layoutHome();
-		return;
-	}
-
-    CHECK_PIN
-
-    // Populate response message
-    stellar_signMessage(msg->message.bytes, msg->message.size, msg->address_n, msg->address_n_count, resp->signature.bytes);
-    resp->has_signature = true;
-    resp->signature.size = 64;
-
-    stellar_getPubkeyAtAddress(msg->address_n, msg->address_n_count, resp->public_key.bytes, sizeof(resp->public_key.bytes));
-    resp->has_public_key = true;
-    resp->public_key.size = 32;
-
-    msg_write(MessageType_MessageType_StellarMessageSignature, resp);
-
-    layoutHome();
-}
-
-void fsm_msgStellarVerifyMessage(StellarVerifyMessage *msg)
-{
-    if (!stellar_verifyMessage(msg)) {
-        fsm_sendFailure(FailureType_Failure_DataError, _("Invalid signature"));
-        return;
-    }
-
-    fsm_sendSuccess(_("Message verified"));
-    layoutHome();
-}
-
 void fsm_msgStellarSignTx(StellarSignTx *msg)
 {
     CHECK_INITIALIZED
diff --git a/firmware/protob/messages.options b/firmware/protob/messages.options
index 8e21a7d8d4..f1d69fb7ef 100644
--- a/firmware/protob/messages.options
+++ b/firmware/protob/messages.options
@@ -182,16 +182,6 @@ StellarGetPublicKey.address_n				max_count:10
 
 StellarPublicKey.public_key				max_size:32
 
-StellarSignMessage.address_n				max_count:10
-StellarSignMessage.message				max_size:1024
-
-StellarMessageSignature.public_key			max_size:32
-StellarMessageSignature.signature			max_size:64
-
-StellarVerifyMessage.public_key				max_size:32
-StellarVerifyMessage.message				max_size:1024
-StellarVerifyMessage.signature				max_size:64
-
 StellarSignTx.address_n					max_count:10
 StellarSignTx.network_passphrase			max_size:1024
 StellarSignTx.source_account				max_size:32
@@ -249,12 +239,9 @@ SelfTest						skip_message:true
 
 LiskGetAddress						skip_message:true
 LiskSignTx						skip_message:true
-LiskSignMessage						skip_message:true
-LiskVerifyMessage					skip_message:true
 LiskGetPublicKey					skip_message:true
 LiskAddress						skip_message:true
 LiskSignedTx						skip_message:true
-LiskMessageSignature					skip_message:true
 LiskPublicKey						skip_message:true
 
 # used only in debug firmware
diff --git a/firmware/stellar.c b/firmware/stellar.c
index fbb449c4e5..f0fc3d8b6d 100644
--- a/firmware/stellar.c
+++ b/firmware/stellar.c
@@ -1130,23 +1130,6 @@ void stellar_getSignatureForActiveTx(uint8_t *out_signature)
     memcpy(out_signature, signature, sizeof(signature));
 }
 
-void stellar_signMessage(const uint8_t *message, uint32_t message_len, uint32_t *address_n, size_t address_n_count, uint8_t *out_signature)
-{
-    HDNode *node = stellar_deriveNode(address_n, address_n_count);
-    ed25519_sign(message, message_len, node->private_key, node->public_key + 1, out_signature);
-}
-
-bool stellar_verifyMessage(StellarVerifyMessage *msg)
-{
-    // returns 0 if signature is valid
-    return ed25519_sign_open(
-        msg->message.bytes,
-        msg->message.size,
-        msg->public_key.bytes,
-        msg->signature.bytes
-        ) == 0;
-}
-
 /*
  * Returns number (representing stroops) formatted as XLM
  * For example, if number has value 1000000000 then it will be returned as "100.0"
diff --git a/firmware/stellar.h b/firmware/stellar.h
index d94bfb6ab8..57c1697b22 100644
--- a/firmware/stellar.h
+++ b/firmware/stellar.h
@@ -57,9 +57,6 @@ void stellar_confirmAccountMergeOp(StellarAccountMergeOp *msg);
 void stellar_confirmManageDataOp(StellarManageDataOp *msg);
 void stellar_confirmBumpSequenceOp(StellarBumpSequenceOp *msg);
 
-void stellar_signMessage(const uint8_t *message, uint32_t message_len, uint32_t *address_n, size_t address_n_count, uint8_t *out_signature);
-bool stellar_verifyMessage(StellarVerifyMessage *msg);
-
 // Layout
 void stellar_layoutGetPublicKey(uint32_t *address_n, size_t address_n_count);
 void stellar_layoutTransactionDialog(const char *line1, const char *line2, const char *line3, const char *line4, const char *line5);
diff --git a/vendor/trezor-common b/vendor/trezor-common
index f54cf5073c..fb662e53b1 160000
--- a/vendor/trezor-common
+++ b/vendor/trezor-common
@@ -1 +1 @@
-Subproject commit f54cf5073c550d92338beb7e8c70ec703d63aee8
+Subproject commit fb662e53b129b250149d982259696531ff4c2b95