diff --git a/.changeset/brave-countries-tie.md b/.changeset/brave-countries-tie.md
new file mode 100644
index 0000000000..082536f7c3
--- /dev/null
+++ b/.changeset/brave-countries-tie.md
@@ -0,0 +1,24 @@
+---
+'@reown/appkit-adapter-solana': patch
+'@reown/appkit-scaffold-ui': patch
+'@reown/appkit': patch
+'@reown/appkit-core': patch
+'@reown/appkit-siwx': patch
+'@apps/demo': patch
+'@apps/gallery': patch
+'@apps/laboratory': patch
+'@reown/appkit-adapter-ethers': patch
+'@reown/appkit-adapter-ethers5': patch
+'@reown/appkit-adapter-polkadot': patch
+'@reown/appkit-adapter-wagmi': patch
+'@reown/appkit-utils': patch
+'@reown/appkit-cdn': patch
+'@reown/appkit-common': patch
+'@reown/appkit-experimental': patch
+'@reown/appkit-polyfills': patch
+'@reown/appkit-siwe': patch
+'@reown/appkit-ui': patch
+'@reown/appkit-wallet': patch
+---
+
+Fixes for improving SIWX initialization and flows
diff --git a/packages/appkit/package.json b/packages/appkit/package.json
index 9c40bcd5a7..c9c8bc56b8 100644
--- a/packages/appkit/package.json
+++ b/packages/appkit/package.json
@@ -98,8 +98,9 @@
     "@reown/appkit-utils": "workspace:*",
     "@reown/appkit-wallet": "workspace:*",
     "@walletconnect/types": "2.17.0",
-    "@walletconnect/utils": "2.17.0",
     "@walletconnect/universal-provider": "2.17.0",
+    "@walletconnect/utils": "2.17.0",
+    "bs58": "6.0.0",
     "valtio": "1.11.2",
     "viem": "2.x"
   },
diff --git a/packages/appkit/src/universal-adapter/client.ts b/packages/appkit/src/universal-adapter/client.ts
index ccff9be1a0..af7eb83d04 100644
--- a/packages/appkit/src/universal-adapter/client.ts
+++ b/packages/appkit/src/universal-adapter/client.ts
@@ -25,6 +25,7 @@ import {
 } from '@reown/appkit-common'
 import { ProviderUtil } from '../store/index.js'
 import type { AppKitOptions, AppKitOptionsWithCaipNetworks } from '../utils/TypesUtil.js'
+import bs58 from 'bs58'
 
 type Metadata = {
   name: string
@@ -246,12 +247,35 @@ export class UniversalAdapterClient {
           throw new Error('connectionControllerClient:signMessage - provider is undefined')
         }
 
-        const signature = await provider.request({
-          method: 'personal_sign',
-          params: [message, address]
-        })
+        let signature = ''
+
+        if (
+          ChainController.state.activeCaipNetwork?.chainNamespace ===
+          CommonConstantsUtil.CHAIN.SOLANA
+        ) {
+          const response = await provider.request(
+            {
+              method: 'solana_signMessage',
+              params: {
+                message: bs58.encode(new TextEncoder().encode(message)),
+                pubkey: address
+              }
+            },
+            ChainController.state.activeCaipNetwork?.caipNetworkId
+          )
+
+          signature = (response as { signature: string }).signature
+        } else {
+          signature = await provider.request(
+            {
+              method: 'personal_sign',
+              params: [message, address]
+            },
+            ChainController.state.activeCaipNetwork?.caipNetworkId
+          )
+        }
 
-        return signature as string
+        return signature
       },
 
       estimateGas: async () => await Promise.resolve(BigInt(0)),
diff --git a/packages/core/src/controllers/ConnectionController.ts b/packages/core/src/controllers/ConnectionController.ts
index 0eecde9c8d..a4ebb545a5 100644
--- a/packages/core/src/controllers/ConnectionController.ts
+++ b/packages/core/src/controllers/ConnectionController.ts
@@ -136,18 +136,15 @@ export const ConnectionController = {
         }
       )
     }
-
-    await this.initializeSWIXIfAvailable()
   },
 
   async connectExternal(options: ConnectExternalOptions, chain: ChainNamespace, setChain = true) {
     await this._getClient(chain).connectExternal?.(options)
+
     if (setChain) {
       ChainController.setActiveNamespace(chain)
       StorageUtil.setConnectedConnector(options.type)
     }
-
-    await this.initializeSWIXIfAvailable()
   },
 
   async reconnectExternal(options: ConnectExternalOptions) {
@@ -250,19 +247,19 @@ export const ConnectionController = {
   },
 
   async disconnect() {
-    const connectionControllerClient = this._getClient()
+    try {
+      const connectionControllerClient = this._getClient()
 
-    const siwx = OptionsController.state.siwx
-    if (siwx) {
-      const activeCaipNetwork = ChainController.getActiveCaipNetwork()
-      const address = ChainController.getActiveCaipAddress()?.split(':')[2] || ''
+      const siwx = OptionsController.state.siwx
+      if (siwx) {
+        const activeCaipNetwork = ChainController.getActiveCaipNetwork()
+        const address = CoreHelperUtil.getPlainAddress(ChainController.getActiveCaipAddress())
 
-      if (activeCaipNetwork && address) {
-        siwx.revokeSession(activeCaipNetwork.caipNetworkId, address)
+        if (activeCaipNetwork && address) {
+          await siwx.revokeSession(activeCaipNetwork.caipNetworkId, address)
+        }
       }
-    }
 
-    try {
       await connectionControllerClient?.disconnect()
       this.resetWcConnection()
     } catch (error) {
@@ -277,7 +274,10 @@ export const ConnectionController = {
    */
   async initializeSWIXIfAvailable() {
     const siwx = OptionsController.state.siwx
-    if (!siwx) {
+    const address = CoreHelperUtil.getPlainAddress(ChainController.getActiveCaipAddress())
+    const network = ChainController.getActiveCaipNetwork()
+
+    if (!(siwx && address && network)) {
       return
     }
 
@@ -287,25 +287,21 @@ export const ConnectionController = {
       return
     }
 
-    const activeCaipNetwork = ChainController.getActiveCaipNetwork()
-    const client = this._getClient(activeCaipNetwork?.chainNamespace)
+    const client = this._getClient(network?.chainNamespace)
 
     try {
-      if (!activeCaipNetwork) {
-        throw new Error('No active chain')
-      }
-
-      const address = ChainController.getActiveCaipAddress()?.split(':')[2] || ''
-
-      const sessions = await siwx.getSessions(activeCaipNetwork.caipNetworkId, address)
+      const sessions = await siwx.getSessions(network.caipNetworkId, address)
       if (sessions.length) {
         return
       }
 
-      ModalController.open({ view: 'SIWXSignMessage' })
+      await ModalController.open({
+        view:
+          StorageUtil.getConnectedConnector() === 'AUTH' ? 'ApproveTransaction' : 'SIWXSignMessage'
+      })
 
       const siwxMessage = await siwx.createMessage({
-        chainId: activeCaipNetwork.caipNetworkId,
+        chainId: network.caipNetworkId,
         accountAddress: address
       })
 
@@ -323,10 +319,10 @@ export const ConnectionController = {
     } catch (error) {
       // eslint-disable-next-line no-console
       console.error('Failed to initialize SIWX', error)
-
-      await client.disconnect()
-
-      throw error
+      ModalController.setLoading(true)
+      await client.disconnect().finally(() => {
+        ModalController.setLoading(false)
+      })
     }
   }
 }
diff --git a/packages/scaffold-ui/src/modal/w3m-modal/index.ts b/packages/scaffold-ui/src/modal/w3m-modal/index.ts
index b0b281ef66..d5f6d3604b 100644
--- a/packages/scaffold-ui/src/modal/w3m-modal/index.ts
+++ b/packages/scaffold-ui/src/modal/w3m-modal/index.ts
@@ -2,6 +2,7 @@ import {
   AccountController,
   ApiController,
   ChainController,
+  ConnectionController,
   CoreHelperUtil,
   EventsController,
   ModalController,
@@ -198,6 +199,8 @@ export class W3mModal extends LitElement {
 
     this.caipAddress = caipAddress
 
+    await ConnectionController.initializeSWIXIfAvailable()
+
     if (nextConnected && !isSameAddress && this.isSiweEnabled) {
       try {
         const { SIWEController } = await import('@reown/appkit-siwe')
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index 2dd98f94a3..4419fa7e30 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -1238,6 +1238,9 @@ importers:
       '@walletconnect/utils':
         specifier: 2.17.0
         version: 2.17.0
+      bs58:
+        specifier: 6.0.0
+        version: 6.0.0
       valtio:
         specifier: 1.11.2
         version: 1.11.2(@types/react@18.3.1)(react@18.3.1)