Merge pull request #4825 from ethereum/udate-snapshot-manual

Update snapshot download instructions

Author: gumb0

doc/snapshot_sync.rst

@@ -1,38 +1,30 @@
 Using snapshot sync
 ===============
 
-Snapshot sync feature is still work in progress and currently is not very user-friendly yet. These are the instructions to make it work with the main net as of December 2017.
+Snapshot sync feature is still work in progress and currently is not very user-friendly yet. These are the instructions to make it work with the main net as of January 2018.
 
 If you have Parity installed, alternative to the `Downloading snapshot` steps below is to get it from the directory like ``Parity/Ethereum/chains/ethereum/db/906a34e69aec8c0d/snapshot``
 
 Downloading the snapshot
 ------
 
-1. Build cpp-ethereum from the ``snapshot-download`` branch
+1. Start downloading providing the path to the directory to save the snapshot into
 ::
-  git checkout snapshot-download
-  git submodule update
-  make eth
+  eth/eth --download-snapshot SNAPSHOT_DIR -v 9
 
-2. Start downloading providing the path to the directory to save the snapshot into and the address of a running node with main net snapshot (can be a Parity node or a cpp node with imported snapshot)
+If it doesn't find the peer to download from, you can also provide the address of a running node with main net snapshot (can be a Parity node or a cpp node with imported snapshot)
 ::
   eth/eth --download-snapshot SNAPSHOT_DIR -v 9 --peerset required:493d52068ec72230688da539926f47a452b762bc348d2ab1491f399b532186d71d7c512e09ffb8e9c24d292d064c00f6234ef1221bc0d86093d2de32358d33da@52.169.85.130:30303 --pin --no-discovery
 
 The one above is cpp node, if it doesn't work try one of the Parity boot nodes from https://github.com/paritytech/parity/blob/master/ethcore/res/ethereum/foundation.json#L176
 
-3. Exit (Ctrl-C) when it says ``Snapshot download complete!``
+2. Exit (Ctrl-C) when it says ``Snapshot download complete!``
 
 Importing the snapshot
 ------
 
-1. Build cpp-ethereum from the latest ``develop`` branch
-::
-  git checkout develop
-  git submodule update
-  make eth
-
-2. Start importing the snapshot providing the path to the snapshot directory
+1. Start importing the snapshot providing the path to the snapshot directory
 ::
   eth/eth --import-snapshot SNAPSHOT_DIR -v 8
 
-3. After import is complete, it will automatically switch to regular sync process to get the blocks between snapshot and the current chain head.
+2. After import is complete, it will automatically switch to regular sync process to get the blocks between snapshot and the current chain head.