fix(legacy): fix OK-26522 & OK-26508 (#542)

Author: lyxyx

legacy/firmware/layout2.c

@@ -245,13 +245,13 @@ void getBleDevInformation(void) {
     ble_request_info(BLE_CMD_BATTERY);
     delay_ms(5);
   }
-  if (!ble_build_id_state()) {
-    ble_request_info(BLE_CMD_BUILD_ID);
-    delay_ms(5);
-  }
-  if (!ble_hash_state()) {
-    ble_request_info(BLE_CMD_HASH);
-    delay_ms(5);
+  if (ble_ver_state()) {  // > 1.5.1
+    if (strcmp(ble_get_ver(), "1.5.1") > 0) {
+      if (!ble_build_id_state()) {
+        ble_request_info(BLE_CMD_BUILD_ID);
+        delay_ms(5);
+      }
+    }
   }
 }
 void refreshNfcIcon(bool force_flag) {

legacy/firmware/polkadot/parser_impl_common.c

@@ -361,6 +361,7 @@ uint16_t _getAddressType() { return __address_type; }
 
 uint16_t _detectAddressType(const parser_context_t *c) {
   (void)c;
+  memset(__polkadot_ticker, 0, sizeof(__polkadot_ticker));
   if (!strncmp(polkadot_network, "polkadot", 8)) {
     __polkadot_dicimal = COIN_AMOUNT_DECIMAL_PLACES;
     memcpy(__polkadot_ticker, COIN_TICKER, 4);