diff --git a/build/bootstrap/bootstrappers.pi b/build/bootstrap/bootstrappers.pi
index 886ac8e99..cb3a2efbd 100644
--- a/build/bootstrap/bootstrappers.pi
+++ b/build/bootstrap/bootstrappers.pi
@@ -1,15 +1,4 @@
-/dns4/bootstrap-0.mainnet.filops.net/tcp/1347/p2p/12D3KooWCVe8MmsEMes2FzgTpt9fXtmCY7wrq91GRiaC8PHSCCBj
-/dns4/bootstrap-1.mainnet.filops.net/tcp/1347/p2p/12D3KooWCwevHg1yLCvktf2nvLu7L9894mcrJR4MsBCcm4syShVc
-/dns4/bootstrap-2.mainnet.filops.net/tcp/1347/p2p/12D3KooWEWVwHGn2yR36gKLozmb4YjDJGerotAPGxmdWZx2nxMC4
-/dns4/bootstrap-3.mainnet.filops.net/tcp/1347/p2p/12D3KooWKhgq8c7NQ9iGjbyK7v7phXvG6492HQfiDaGHLHLQjk7R
-/dns4/bootstrap-4.mainnet.filops.net/tcp/1347/p2p/12D3KooWL6PsFNPhYftrJzGgF5U18hFoaVhfGk7xwzD8yVrHJ3Uc
-/dns4/bootstrap-5.mainnet.filops.net/tcp/1347/p2p/12D3KooWLFynvDQiUpXoHroV1YxKHhPJgysQGH2k3ZGwtWzR4dFH
-/dns4/bootstrap-6.mainnet.filops.net/tcp/1347/p2p/12D3KooWP5MwCiqdMETF9ub1P3MbCvQCcfconnYHbWg6sUJcDRQQ
-/dns4/bootstrap-7.mainnet.filops.net/tcp/1347/p2p/12D3KooWRs3aY1p3juFjPy8gPN95PEQChm2QKGUCAdcDCC4EBMKf
-/dns4/bootstrap-8.mainnet.filops.net/tcp/1347/p2p/12D3KooWScFR7385LTyR4zU1bYdzSiiAb5rnNABfVahPvVSzyTkR
-/dns4/lotus-bootstrap.forceup.cn/tcp/41778/p2p/12D3KooWFQsv3nRMUevZNWWsY1Wu6NUzUbawnWU5NcRhgKuJA37C
-/dns4/bootstrap-0.starpool.in/tcp/12757/p2p/12D3KooWGHpBMeZbestVEWkfdnC9u7p6uFHXL1n7m1ZBqsEmiUzz
-/dns4/bootstrap-1.starpool.in/tcp/12757/p2p/12D3KooWQZrGH1PxSNZPum99M1zNvjNFM33d1AAu5DcvdHptuU7u
-/dns4/node.glif.io/tcp/1235/p2p/12D3KooWBF8cpp65hp2u9LK5mh19x67ftAam84z9LsfaquTDSBpt
-/dns4/bootstrap-0.ipfsmain.cn/tcp/34721/p2p/12D3KooWQnwEGNqcM2nAcPtRR9rAX8Hrg4k9kJLCHoTR5chJfz6d
-/dns4/bootstrap-1.ipfsmain.cn/tcp/34723/p2p/12D3KooWMKxMkD5DMpSWsW7dBddKxKT7L2GgbNuckz9otxvkvByP
+/dns4/bootstrap-0.calibration.fildev.network/tcp/1347/p2p/12D3KooWK1QYsm6iqyhgH7vqsbeoNoKHbT368h1JLHS1qYN36oyc
+/dns4/bootstrap-1.calibration.fildev.network/tcp/1347/p2p/12D3KooWKDyJZoPsNak1iYNN1GGmvGnvhyVbWBL6iusYfP3RpgYs
+/dns4/bootstrap-2.calibration.fildev.network/tcp/1347/p2p/12D3KooWJRSTnzABB6MYYEBbSTT52phQntVD1PpRTMh1xt9mh6yH
+/dns4/bootstrap-3.calibration.fildev.network/tcp/1347/p2p/12D3KooWQLi3kY6HnMYLUtwCe26zWMdNhniFgHVNn1DioQc7NiWv
diff --git a/build/genesis/devnet.car b/build/genesis/devnet.car
deleted file mode 100644
index f1b3f342a..000000000
Binary files a/build/genesis/devnet.car and /dev/null differ
diff --git a/build/params_mainnet.go b/build/params_mainnet.go
index 94deedfec..223200061 100644
--- a/build/params_mainnet.go
+++ b/build/params_mainnet.go
@@ -5,9 +5,6 @@
 package build
 
 import (
-	"math"
-	"os"
-
 	"github.com/filecoin-project/go-address"
 	"github.com/filecoin-project/go-state-types/abi"
 	"github.com/filecoin-project/lotus/chain/actors/policy"
@@ -16,45 +13,39 @@ import (
 )
 
 var DrandSchedule = map[abi.ChainEpoch]DrandEnum{
-	0:                  DrandIncentinet,
-	UpgradeSmokeHeight: DrandMainnet,
+	0: DrandMainnet,
 }
 
-const UpgradeBreezeHeight = 41280
+const UpgradeBreezeHeight = -1
 const BreezeGasTampingDuration = 120
 
-const UpgradeSmokeHeight = 51000
+const UpgradeSmokeHeight = -2
 
-const UpgradeIgnitionHeight = 94000
-const UpgradeRefuelHeight = 130800
+const UpgradeIgnitionHeight = -3
+const UpgradeRefuelHeight = -4
 
-var UpgradeActorsV2Height = abi.ChainEpoch(138720)
+var UpgradeActorsV2Height = abi.ChainEpoch(30)
 
-const UpgradeTapeHeight = 140760
+const UpgradeTapeHeight = 60
 
 // This signals our tentative epoch for mainnet launch. Can make it later, but not earlier.
 // Miners, clients, developers, custodians all need time to prepare.
 // We still have upgrades and state changes to do, but can happen after signaling timing here.
-const UpgradeLiftoffHeight = 148888
+const UpgradeLiftoffHeight = -5
 
-const UpgradeKumquatHeight = 170000
+const UpgradeKumquatHeight = 90
 
 func init() {
-	policy.SetConsensusMinerMinPower(abi.NewStoragePower(10 << 40))
+	policy.SetConsensusMinerMinPower(abi.NewStoragePower(10 << 30))
 	policy.SetSupportedProofTypes(
+		abi.RegisteredSealProof_StackedDrg512MiBV1,
 		abi.RegisteredSealProof_StackedDrg32GiBV1,
 		abi.RegisteredSealProof_StackedDrg64GiBV1,
 	)
 
-	if os.Getenv("LOTUS_USE_TEST_ADDRESSES") != "1" {
-		SetAddressNetwork(address.Mainnet)
-	}
+	SetAddressNetwork(address.Testnet)
 
-	if os.Getenv("LOTUS_DISABLE_V2_ACTOR_MIGRATION") == "1" {
-		UpgradeActorsV2Height = math.MaxInt64
-	}
-
-	Devnet = false
+	Devnet = true
 }
 
 const BlockDelaySecs = uint64(builtin2.EpochDurationSeconds)