diff --git a/cmd/tomo/config.go b/cmd/tomo/config.go
index 6fc12571e7..b6ec2db452 100644
--- a/cmd/tomo/config.go
+++ b/cmd/tomo/config.go
@@ -28,6 +28,7 @@ import (
 	"unicode"
 
 	"github.com/ethereum/go-ethereum/cmd/utils"
+	"github.com/ethereum/go-ethereum/common"
 	"github.com/ethereum/go-ethereum/dashboard"
 	"github.com/ethereum/go-ethereum/eth"
 	"github.com/ethereum/go-ethereum/internal/debug"
@@ -151,6 +152,11 @@ func makeConfigNode(ctx *cli.Context) (*node.Node, tomoConfig) {
 		ctx.Set(utils.NATFlag.Name, cfg.NAT)
 	}
 
+	// Check testnet is enable.
+	if ctx.GlobalBool(utils.TomoTestnetFlag.Name) {
+		common.IsTestnet = true
+	}
+
 	// read passwords from environment
 	passwords := []string{}
 	for _, env := range cfg.Account.Passwords {
diff --git a/cmd/tomo/main.go b/cmd/tomo/main.go
index 9a125d0485..751c4babf0 100644
--- a/cmd/tomo/main.go
+++ b/cmd/tomo/main.go
@@ -109,6 +109,7 @@ var (
 		//utils.TestnetFlag,
 		//utils.RinkebyFlag,
 		//utils.VMEnableDebugFlag,
+		utils.TomoTestnetFlag,
 		utils.NetworkIdFlag,
 		utils.RPCCORSDomainFlag,
 		utils.RPCVirtualHostsFlag,
diff --git a/cmd/utils/flags.go b/cmd/utils/flags.go
index f158819e42..a33380d9ff 100644
--- a/cmd/utils/flags.go
+++ b/cmd/utils/flags.go
@@ -139,6 +139,10 @@ var (
 		Name:  "testnet",
 		Usage: "Ropsten network: pre-configured proof-of-work test network",
 	}
+	TomoTestnetFlag = cli.BoolFlag{
+		Name:  "tomo-testnet",
+		Usage: "Tomo test network",
+	}
 	RinkebyFlag = cli.BoolFlag{
 		Name:  "rinkeby",
 		Usage: "Rinkeby network: pre-configured proof-of-authority test network",
diff --git a/common/constants.go b/common/constants.go
index 0571a8cf11..89ded09a84 100644
--- a/common/constants.go
+++ b/common/constants.go
@@ -16,3 +16,5 @@ const (
 	LimitThresholdNonceInQueue = 10
 	MinGasPrice                = 2500
 )
+
+var IsTestnet bool = false
diff --git a/consensus/posv/posv.go b/consensus/posv/posv.go
index 09ad9ef025..6ffa7df47e 100644
--- a/consensus/posv/posv.go
+++ b/consensus/posv/posv.go
@@ -45,8 +45,8 @@ import (
 )
 
 const (
-	inmemorySnapshots  = 128                    // Number of recent vote snapshots to keep in memory
-	M2ByteLength       = 4
+	inmemorySnapshots = 128 // Number of recent vote snapshots to keep in memory
+	M2ByteLength      = 4
 )
 
 type Masternode struct {
@@ -476,9 +476,13 @@ func whoIsCreator(snap *Snapshot, header *types.Header) (common.Address, error)
 
 func (c *Posv) YourTurn(chain consensus.ChainReader, parent *types.Header, signer common.Address) (int, int, int, bool, error) {
 	masternodes := c.GetMasternodes(chain, parent)
+	if common.IsTestnet {
+		// Only three mns for tomo testnet.
+		masternodes = masternodes[:3]
+	}
 	snap, err := c.GetSnapshot(chain, parent)
 	if err != nil {
-		log.Error("Failed when trying to commit new work", "err", err)
+		log.Warn("Failed when trying to commit new work", "err", err)
 		return 0, -1, -1, false, err
 	}
 	if len(masternodes) == 0 {
@@ -499,7 +503,7 @@ func (c *Posv) YourTurn(chain consensus.ChainReader, parent *types.Header, signe
 		log.Info("Masternodes cycle info", "number of masternodes", len(masternodes), "previous", pre, "position", preIndex, "current", signer, "position", curIndex)
 	}
 	for i, s := range masternodes {
-		fmt.Printf("%d - %s\n", i, s.String())
+		log.Info("%d - %s\n", i, s.String())
 	}
 	if (preIndex+1)%len(masternodes) == curIndex {
 		return len(masternodes), preIndex, curIndex, true, nil
diff --git a/contracts/utils.go b/contracts/utils.go
index 8046d0603f..05e10740d7 100644
--- a/contracts/utils.go
+++ b/contracts/utils.go
@@ -85,7 +85,7 @@ func CreateTransactionSign(chainConfig *params.ChainConfig, pool *core.TxPool, m
 		// Add tx signed to local tx pool.
 		err = pool.AddLocal(txSigned)
 		if err != nil {
-			log.Error("Fail to add tx sign to local pool.", "error", err, "number", block.NumberU64(), "hash", block.Hash().Hex(), "from", account.Address, "nonce", nonce)
+			log.Warn("Fail to add tx sign to local pool.", "error", err, "number", block.NumberU64(), "hash", block.Hash().Hex(), "from", account.Address, "nonce", nonce)
 		}
 
 		// Create secret tx.
diff --git a/core/blockchain.go b/core/blockchain.go
index e68f0bdedd..1ea79d0440 100644
--- a/core/blockchain.go
+++ b/core/blockchain.go
@@ -127,11 +127,11 @@ type BlockChain struct {
 	bodyRLPCache     *lru.Cache     // Cache for the most recent block bodies in RLP encoded format
 	blockCache       *lru.Cache     // Cache for the most recent entire blocks
 	futureBlocks     *lru.Cache     // future blocks are blocks added for later processing
-	resultProcess    *lru.Cache		// Cache for processed blocks
-	calculatingBlock *lru.Cache		// Cache for processing blocks
-	downloadingBlock *lru.Cache		// Cache for downloading blocks (avoid duplication from fetcher)
-	quit             chan struct{} // blockchain quit channel
-	running          int32         // running must be called atomically
+	resultProcess    *lru.Cache     // Cache for processed blocks
+	calculatingBlock *lru.Cache     // Cache for processing blocks
+	downloadingBlock *lru.Cache     // Cache for downloading blocks (avoid duplication from fetcher)
+	quit             chan struct{}  // blockchain quit channel
+	running          int32          // running must be called atomically
 	// procInterrupt must be atomically called
 	procInterrupt int32          // interrupt signaler for block processing
 	wg            sync.WaitGroup // chain processing wait group for shutting down
diff --git a/core/tx_pool.go b/core/tx_pool.go
index ec029ed939..41f1a09887 100644
--- a/core/tx_pool.go
+++ b/core/tx_pool.go
@@ -1171,7 +1171,7 @@ func (pool *TxPool) demoteUnexecutables() {
 		if list.Len() > 0 && list.txs.Get(nonce) == nil {
 			for _, tx := range list.Cap(0) {
 				hash := tx.Hash()
-				log.Error("Demoting invalidated transaction", "hash", hash)
+				log.Warn("Demoting invalidated transaction", "hash", hash)
 				pool.enqueueTx(hash, tx)
 			}
 		}
diff --git a/eth/backend.go b/eth/backend.go
index 3f998e098e..c1d5b1a553 100644
--- a/eth/backend.go
+++ b/eth/backend.go
@@ -355,7 +355,7 @@ func New(ctx *node.ServiceContext, config *Config) (*Ethereum, error) {
 			currentHeader := eth.blockchain.CurrentHeader()
 			snap, err := c.GetSnapshot(eth.blockchain, currentHeader)
 			if err != nil {
-				log.Error("Can't get snapshot with current header ", "number", currentHeader.Number, "hash", currentHeader.Hash().Hex())
+				log.Error("Can't get snapshot with current header ", "number", currentHeader.Number, "hash", currentHeader.Hash().Hex(), "err", err)
 				return false
 			}
 			if _, ok := snap.Signers[address]; ok {
diff --git a/eth/downloader/downloader.go b/eth/downloader/downloader.go
index 4c285db2e6..6fbcc28a83 100644
--- a/eth/downloader/downloader.go
+++ b/eth/downloader/downloader.go
@@ -295,7 +295,7 @@ func (d *Downloader) UnregisterPeer(id string) error {
 	logger := log.New("peer", id)
 	logger.Trace("Unregistering sync peer")
 	if err := d.peers.Unregister(id); err != nil {
-		logger.Error("Failed to unregister sync peer", "err", err)
+		logger.Warn("Failed to unregister sync peer", "err", err)
 		return err
 	}
 	d.queue.Revoke(id)
diff --git a/eth/handler.go b/eth/handler.go
index f1a408d53d..322a888ade 100644
--- a/eth/handler.go
+++ b/eth/handler.go
@@ -205,7 +205,7 @@ func (pm *ProtocolManager) removePeer(id string) {
 	// Unregister the peer from the downloader and Ethereum peer set
 	pm.downloader.UnregisterPeer(id)
 	if err := pm.peers.Unregister(id); err != nil {
-		log.Error("Peer removal failed", "peer", id, "err", err)
+		log.Warn("Peer removal failed", "peer", id, "err", err)
 	}
 	// Hard disconnect at the networking layer
 	if peer != nil {
diff --git a/genesis/mainnet.json b/genesis/mainnet.json
index 555fa89457..7567f06c21 100644
--- a/genesis/mainnet.json
+++ b/genesis/mainnet.json
@@ -17,7 +17,7 @@
     }
   },
   "nonce": "0x0",
-  "timestamp": "0x5c107ff8",
+  "timestamp": "0x5c1358f5",
   "extraData": "0x00000000000000000000000000000000000000000000000000000000000000001b82c4bf317fcafe3d77e8b444c82715d216afe845b7bd987fa22c9bac89b71f0ded03f6e150ba31ad670b2b166684657ffff95f4810380ae7381e9bce41231d5dd8cdd7499e418b648c00af75d184a2f9aba09a6fa4a46fb1a6a3919b027d9cac5aa6890000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000",
   "gasLimit": "0x47b760",
   "difficulty": "0x1",
@@ -119,4 +119,4 @@
   "number": "0x0",
   "gasUsed": "0x0",
   "parentHash": "0x0000000000000000000000000000000000000000000000000000000000000000"
-}
\ No newline at end of file
+}
diff --git a/miner/worker.go b/miner/worker.go
index ffba0b1ca1..0684bfa28e 100644
--- a/miner/worker.go
+++ b/miner/worker.go
@@ -497,9 +497,9 @@ func (self *worker) commitNewWork() {
 		if self.config.Posv != nil {
 			// get masternodes set from latest checkpoint
 			c := self.engine.(*posv.Posv)
-			len, preIndex, curIndex, ok, err := c.YourTurn(self.chain, parent.Header(),self.coinbase)
+			len, preIndex, curIndex, ok, err := c.YourTurn(self.chain, parent.Header(), self.coinbase)
 			if err != nil {
-				log.Error("Failed when trying to commit new work", "err", err)
+				log.Warn("Failed when trying to commit new work", "err", err)
 				return
 			}
 			if !ok {
diff --git a/params/version.go b/params/version.go
index 02e09f535d..b3f510f330 100644
--- a/params/version.go
+++ b/params/version.go
@@ -23,7 +23,7 @@ import (
 const (
 	VersionMajor = 1        // Major version component of the current release
 	VersionMinor = 1        // Minor version component of the current release
-	VersionPatch = 0        // Patch version component of the current release
+	VersionPatch = 1        // Patch version component of the current release
 	VersionMeta  = "stable" // Version metadata to append to the version string
 )