what change need make to accept old blockchain block's

I try make altcoin bassed on old Litecoin sources, end i try to convert it for latest available sources. How i can do this ? What need for this ?

I try simple download it on old wallet, then run new. But mine new or download them from other wallet no possible. I try find info how do this. But find noting.

I have this error when trying download block's from peer's

Code:

ERROR: AcceptBlockHeader: Consensus::ContextualCheckBlockHeader: 90e718e6878f4b7ae4de4ae83db75881d00ca017f5a117c2054798bcb76c4178, bad-version(0x00000002), rejected nVersion=0x00000002 block (code 17)
   2017-07-28 04:12:10 ERROR: invalid header received
   2017-07-28 04:12:10 ProcessMessages(headers, 162003 bytes) FAILED peer=0
   2017-07-28 04:12:10 receive version message: /Satoshi:1.0.0/: version 70002, blocks=3293, us=x.x.x.x:12815, peer=1

Code:

validator i have this settings

   // Check proof of work
   if (block.nBits != GetNextWorkRequired(pindexPrev, &block, consensusParams))
   return state.DoS(100, false, REJECT_INVALID, "bad-diffbits", false, "incorrect proof of work");

   // Check timestamp against prev
   if (block.GetBlockTime() <= pindexPrev->GetMedianTimePast())
   return state.Invalid(false, REJECT_INVALID, "time-too-old", "block's timestamp is too early");

   // Check timestamp
   if (block.GetBlockTime() > nAdjustedTime + 2 * 60 * 60)
   return state.Invalid(false, REJECT_INVALID, "time-too-new", "block timestamp too far in the future");

   // Reject outdated version blocks when 95% (75% on testnet) of the network has upgraded:
   // check for version 2, 3 and 4 upgrades
   if((block.nVersion < 2 && nHeight >= consensusParams.BIP34Height) ||
   (block.nVersion < 3 && nHeight >= consensusParams.BIP66Height) ||
   (block.nVersion < 4 && nHeight >= consensusParams.BIP65Height))
   return state.Invalid(false, REJECT_OBSOLETE, strprintf("bad-version(0x%08x)", block.nVersion),
   strprintf("rejected nVersion=0x%08x block", block.nVersion));

   if (block.nVersion < VERSIONBITS_TOP_BITS && IsWitnessEnabled(pindexPrev, consensusParams))
   return state.Invalid(false, REJECT_OBSOLETE, strprintf("bad-version(0x%08x)", block.nVersion),
   strprintf("rejected nVersion=0x%08x block", block.nVersion));

   return true;
   }

in genesis block settings i have

Code:

genesis = CreateGenesisBlock(1498204210, 215446, 0x1e0ffff0, 1, 500 * COIN);

but i have in old sources this setting

Code:

   // Check that the block chain matches the known block chain up to a checkpoint
   if (!Checkpoints::CheckBlock(nHeight, hash))
   return state.DoS(100, error("AcceptBlock() : rejected by checkpoint lock-in at %d", nHeight));

   // Don't accept any forks from the main chain prior to last checkpoint
   CBlockIndex* pcheckpoint = Checkpoints::GetLastCheckpoint(mapBlockIndex);
   if (pcheckpoint && nHeight < pcheckpoint->nHeight)
   return state.DoS(100, error("AcceptBlock() : forked chain older than last checkpoint (height %d)", nHeight));

   // Reject block.nVersion=1 blocks (mainnet >= 710000, testnet >= 400000)
   if (nVersion < 2)
   {
   if ((!fTestNet && nHeight >= 710000) ||
   (fTestNet && nHeight >= 400000))
   {
   return state.Invalid(error("AcceptBlock() : rejected nVersion=1 block"));
   }
   }
   // Enforce block.nVersion=2 rule that the coinbase starts with serialized block height
   if (nVersion >= 2)
   {
   if ((!fTestNet && nHeight >= 710000) ||
   (fTestNet && nHeight >= 400000))
   {
   CScript expect = CScript() << nHeight;
   if (vtx[0].vin[0].scriptSig.size() < expect.size() ||
   !std::equal(expect.begin(), expect.end(), vtx[0].vin[0].scriptSig.begin()))
   return state.DoS(100, error("AcceptBlock() : block height mismatch in coinbase"));
   }
   }
   }

Topic: what change need make to accept old blockchain block's (Read 320 times)