diff --git a/tests_zemu/package.json b/tests_zemu/package.json
index 90958bef0..746b6efad 100644
--- a/tests_zemu/package.json
+++ b/tests_zemu/package.json
@@ -12,7 +12,7 @@
   "scripts": {
     "test": "jest --testPathIgnorePatterns='dev.*|testvectors.*|btc.*'",
     "test_dev": "jest",
-    "try": "node try.mjs",
+    "try": "ts-node try.ts",
     "debug": "node debug/debug.mjs debug"
   },
   "dependencies": {
diff --git a/tests_zemu/try.mjs b/tests_zemu/try.mjs
deleted file mode 100644
index 33ca22b14..000000000
--- a/tests_zemu/try.mjs
+++ /dev/null
@@ -1,29 +0,0 @@
-import TransportNodeHid from '@ledgerhq/hw-transport-node-hid'
-import ledger_logs from '@ledgerhq/logs'
-import AvalancheApp from '@zondax/ledger-avalanche-app'
-
-const APP_DERIVATION = "m/44'/9000'/0'/0/0"
-
-async function get_avax_address(app) {
-  const resp = await app.getAddressAndPubKey(APP_DERIVATION, true)
-
-  console.log(resp)
-}
-
-async function your_test() {
-  console.log('your_result')
-}
-
-async function main() {
-  const transport = await TransportNodeHid.default.open()
-  ledger_logs.listen(log => {
-    console.log(`${log.type} ${log.message}`)
-  })
-  const app = new AvalancheApp.default(transport)
-
-  await your_test()
-}
-
-;(async () => {
-  await main()
-})()
diff --git a/tests_zemu/try.ts b/tests_zemu/try.ts
new file mode 100644
index 000000000..e79114a3e
--- /dev/null
+++ b/tests_zemu/try.ts
@@ -0,0 +1,63 @@
+import Eth from '@ledgerhq/hw-app-eth'
+import TransportNodeHid from '@ledgerhq/hw-transport-node-hid'
+// import ledger_logs from '@ledgerhq/logs'
+import { log } from '@ledgerhq/logs'
+import AvalancheApp from '@zondax/ledger-avalanche-app'
+
+const APP_DERIVATION = "m/44'/9000'/0'/0/0"
+const ETH_DERIVATION = "m/44'/60'/0'/0'"
+
+async function get_avax_address(app: AvalancheApp) {
+  const resp = await app.getAddressAndPubKey(APP_DERIVATION, true)
+  console.log(resp)
+}
+
+async function sign_191_message(app: Eth) {
+  // Initialize array to hold the message content
+  const msgRaw: number[] = []
+  // Add content following the same pattern as the Rust test
+  msgRaw.push(...Buffer.from('Hello, ', 'utf8'))
+  msgRaw.push(0x80)
+  msgRaw.push(...Buffer.from('World! ', 'utf8'))
+  msgRaw.push(0x81)
+  msgRaw.push(...Buffer.from('This is a ', 'utf8'))
+  msgRaw.push(0x82)
+  msgRaw.push(...Buffer.from('complex ', 'utf8'))
+  msgRaw.push(0x83)
+  msgRaw.push(...Buffer.from('test ', 'utf8'))
+  msgRaw.push(0x84)
+  msgRaw.push(...Buffer.from('vector with ', 'utf8'))
+  msgRaw.push(0x85, 0x86, 0x87)
+  msgRaw.push(...Buffer.from(' multiple non-ASCII ', 'utf8'))
+  msgRaw.push(0x88, 0x89)
+  msgRaw.push(...Buffer.from(' characters ', 'utf8'))
+  msgRaw.push(0x8a)
+  msgRaw.push(...Buffer.from('scattered ', 'utf8'))
+  msgRaw.push(0x8b)
+  msgRaw.push(...Buffer.from('throughout. ', 'utf8'))
+  msgRaw.push(0x8c, 0x8d, 0x8e, 0x8f)
+  msgRaw.push(...Buffer.from('It should ', 'utf8'))
+  msgRaw.push(0x90)
+  msgRaw.push(...Buffer.from('properly ', 'utf8'))
+  msgRaw.push(0x91)
+  msgRaw.push(...Buffer.from('chunk ', 'utf8'))
+  msgRaw.push(0x92)
+  msgRaw.push(...Buffer.from('and format.', 'utf8'))
+
+  const msgData = Buffer.from(msgRaw)
+  const respReq = await app.signPersonalMessage(ETH_DERIVATION, msgData.toString('hex'))
+  console.log('done!')
+}
+
+async function main() {
+  const transport = await TransportNodeHid.create() // Changed from .open(null)
+
+  log('trying to connect to device')
+
+  const app = new Eth(transport)
+  await sign_191_message(app)
+}
+
+;(async () => {
+  await main().catch(console.error)
+})()
diff --git a/tests_zemu/tsconfig.json b/tests_zemu/tsconfig.json
index 9cdbe1927..ac8d5e929 100644
--- a/tests_zemu/tsconfig.json
+++ b/tests_zemu/tsconfig.json
@@ -1,20 +1,29 @@
 {
   "compilerOptions": {
-    "module": "esnext",
+    "target": "ES2020",
+    "module": "CommonJS",
     "moduleResolution": "node",
-    "target": "esnext",
-    "strict": true,
-    "lib": [
-      "es2019"
-    ],
     "esModuleInterop": true,
-    "declaration": true,
-    "forceConsistentCasingInFileNames": true,
+    "strict": true,
     "skipLibCheck": true,
-    "outDir": "./dist"
+    "forceConsistentCasingInFileNames": true,
+    "outDir": "./dist",
+    "allowJs": true
   },
-  "exclude": [
-    "node_modules",
-    "./dist/**"
-  ]
+  "exclude": ["node_modules", "./dist/**"]
 }
+// {
+//   "compilerOptions": {
+//     "module": "esnext",
+//     "moduleResolution": "node",
+//     "target": "esnext",
+//     "strict": true,
+//     "lib": ["es2019"],
+//     "esModuleInterop": true,
+//     "declaration": true,
+//     "forceConsistentCasingInFileNames": true,
+//     "skipLibCheck": true,
+//     "outDir": "./dist"
+//   },
+//   "exclude": ["node_modules", "./dist/**"]
+// }