diff --git a/packages/cli/src/download.ts b/packages/cli/src/download.ts
index c73fa36f..7d1d0702 100644
--- a/packages/cli/src/download.ts
+++ b/packages/cli/src/download.ts
@@ -157,7 +157,7 @@ export async function download(
 
   if (!preserveCLI) {
     // make sure the CLI is always the latest
-    await updateCLI({ verbose });
+    await updateCLI({ verbose, version });
   } else {
     // TODO figure out the cause of errors
     try {
diff --git a/packages/cli/src/node/export-snapshot.ts b/packages/cli/src/node/export-snapshot.ts
index f78e4e69..a6e988f9 100644
--- a/packages/cli/src/node/export-snapshot.ts
+++ b/packages/cli/src/node/export-snapshot.ts
@@ -19,7 +19,6 @@ import {
   getBlockHeight,
   getDBEnvVars,
   hasLocalPostgres,
-  isLinux,
   printUsingConfig,
   runSQL,
 } from '../shared/misc';
@@ -36,7 +35,6 @@ import { nodeStart } from './start';
 
 export type TOptions = IConfig & INetwork & IVerbose;
 
-// TODO allow re-using an existing backup file
 export default leaf({
   commandName: 'export-snapshot',
   description: `Creates an optimized database snapshot using the provided config and places it in ./${BACKUPS_DIR}.`,
@@ -45,6 +43,7 @@ export default leaf({
     ...configOption,
     ...networkOption,
     ...verboseOption,
+    // TODO --file options, which points to backup (to avoid exporting the db)
   },
 
   async action({ config, network, verbose }: TOptions) {
@@ -116,7 +115,6 @@ export async function nodeExportSnapshot({
 
     // TODO merge with `nodeImportDB()`
     // import the exported file
-    log('Importing the backup file...');
     // TODO unify with others by piping manually
     const backupPath = path.resolve(getBackupsDir(), 'latest');
     try {
@@ -128,6 +126,7 @@ export async function nodeExportSnapshot({
       execSyncAsUser(cmd, null, { env });
     } catch (e) {
       log(`Cannot import "${backupPath}" into the snap DB`);
+      throw e;
     }
     await runSQL('delete from exceptions;', network, config, verbose, targetDB);
 
@@ -167,6 +166,7 @@ export async function nodeExportSnapshot({
       execSyncAsUser(cmd, null, { env });
     } catch (e) {
       log("Couldn't dump the DB");
+      throw e;
     }
 
     log('Snapshot ready, removing the temp DB');
diff --git a/packages/cli/src/node/start.ts b/packages/cli/src/node/start.ts
index f3c38b45..928080fb 100644
--- a/packages/cli/src/node/start.ts
+++ b/packages/cli/src/node/start.ts
@@ -27,8 +27,10 @@ import {
   createParseNodeOutput,
   dbConnectionInfo,
   execCmd,
-  getDBEnvVars, getSudoUsername,
-  isDevEnv, isSudo,
+  getDBEnvVars,
+  getSudoUsername,
+  isDevEnv,
+  isSudo,
   mergeConfig,
   printUsingConfig,
 } from '../shared/misc';
@@ -134,7 +136,6 @@ export async function nodeStart(
     log('Starting RISE Node...');
 
     let ready = false;
-    removeNodeLock();
 
     // add the crontab entry if requested
     if (crontab) {
@@ -222,7 +223,6 @@ function startLaunchpad(
         params.push(
           '-s',
           '--override-config',
-          // TODO test this works
           `db.database="${mergedConfig.db.database}_snap"`
         );
       }
@@ -238,7 +238,9 @@ function startLaunchpad(
         { foreground, verbose },
         () => {
           setReady();
-          setNodeLock(proc.pid, NodeStates.READY);
+          if (!isDevEnv()) {
+            setNodeLock(proc.pid, NodeStates.READY);
+          }
           if (!foreground) {
             resolve();
           }
diff --git a/packages/cli/src/shared/constants.ts b/packages/cli/src/shared/constants.ts
index d457a618..0514a9be 100644
--- a/packages/cli/src/shared/constants.ts
+++ b/packages/cli/src/shared/constants.ts
@@ -1,6 +1,6 @@
 const isLinux = process.platform === 'linux';
 // TODO keep in sync with /packages/cli/package.json
-export const VERSION_CLI = 'v1.1.2';
+export const VERSION_CLI = 'v1.1.5';
 // TODO keep in sync with /package.json
 export const VERSION_RISE = 'v2.0.1-beta1';
 // TODO single enum for NETWORKS and NetworkType
@@ -27,9 +27,9 @@ export const DB_LOG_FILE = isLinux
 export const DB_LOCK_FILE = DB_DATA_DIR + '/postmaster.pid';
 export const DB_PG_PATH = isLinux ? '/usr/lib/postgresql/11/bin/' : '';
 export const DOWNLOAD_URL = 'https://github.com/RiseVision/rise-node/releases/';
-export const NODE_LOCK_FILE = '/tmp/rise-node.pid.lock';
-export const SNAPSHOT_LOCK_FILE = '/tmp/rise-snapshot.pid.lock';
-export const BACKUP_LOCK_FILE = '/tmp/rise-backup.pid.lock';
+export const NODE_LOCK_FILE = '/tmp/rise-node-v2.pid.lock';
+export const SNAPSHOT_LOCK_FILE = '/tmp/rise-snapshot-v2.pid.lock';
+export const BACKUP_LOCK_FILE = '/tmp/rise-backup-v2.pid.lock';
 export const BACKUPS_DIR = DATA_DIR + '/backups';
 export const LOGS_DIR = DATA_DIR + '/logs';
 export const SHELL_LOG_FILE = LOGS_DIR + '/shell';
diff --git a/packages/cli/src/shared/fs-ops.ts b/packages/cli/src/shared/fs-ops.ts
index d5c19057..0c02b335 100644
--- a/packages/cli/src/shared/fs-ops.ts
+++ b/packages/cli/src/shared/fs-ops.ts
@@ -17,7 +17,6 @@ import { NoRiseDistFileError } from './exceptions';
 import { debug, log } from './log';
 import {
   execCmd,
-  execSyncAsUser,
   getSudoUsername,
   isDevEnv,
   isSudo,
@@ -172,6 +171,7 @@ export function setNodeLock(pid: number, state: NodeStates) {
 }
 
 export function removeNodeLock() {
+  debug('removing node lock');
   if (!isDevEnv() && fs.existsSync(NODE_LOCK_FILE)) {
     fs.unlinkSync(NODE_LOCK_FILE);
   }
@@ -192,11 +192,15 @@ export function getPID(filePath: string): [number, NodeStates] | false {
       .split('\n');
     let exists: string;
     try {
-      exists = execSyncAsUser(`ps -p ${pid} -o pid=`, null, null, false);
+      // null output when using execSyncAsUser
+      exists = execSync(`ps -p ${pid} -o pid=`)
+        .toString('utf8')
+        .trim();
     } catch {
       // empty
     }
     if (!exists) {
+      log(`PID ${pid} doesn't exist, removing the lock file`);
       fs.unlinkSync(filePath);
       return false;
     }
diff --git a/packages/cli/src/shared/log.ts b/packages/cli/src/shared/log.ts
index 99c778b1..8aaa6b62 100644
--- a/packages/cli/src/shared/log.ts
+++ b/packages/cli/src/shared/log.ts
@@ -3,7 +3,7 @@ import { execSync } from 'child_process';
 import { debug as createDebug } from 'debug';
 import fs from 'fs';
 import { sync as mkdirpSync } from 'mkdirp';
-import { LOGS_DIR, SHELL_LOG_FILE } from './constants';
+import { DATA_DIR, LOGS_DIR, SHELL_LOG_FILE } from './constants';
 import { getSudoUsername, isSudo } from './misc';
 
 export const debug = createDebug('rise-cli');
@@ -17,7 +17,7 @@ function createShellLogHandler(): number {
   appendHeader(fd);
   // fix perms when in sudo
   if (isSudo()) {
-    execSync(`chown ${getSudoUsername()} ${SHELL_LOG_FILE}`);
+    execSync(`chown -R ${getSudoUsername()} ${DATA_DIR}`);
   }
   return fd;
 }
diff --git a/packages/cli/src/shared/misc.ts b/packages/cli/src/shared/misc.ts
index 344b8673..86a048ac 100644
--- a/packages/cli/src/shared/misc.ts
+++ b/packages/cli/src/shared/misc.ts
@@ -234,7 +234,10 @@ export function createParseNodeOutput(
       return;
     }
     // DB corrupted
-    if (data.includes('SequelizeUniqueConstraintError')) {
+    if (
+      data.includes('SequelizeUniqueConstraintError') ||
+      data.includes('violates not-null constraint')
+    ) {
       debug('DBCorruptedError');
       reject(new DBCorruptedError());
       return;
@@ -408,6 +411,11 @@ export function checkSudo(requireSudo = true) {
     throw new ConditionsNotMetError('Needs sudo');
     // TODO show the whole command for copy&pasting
   }
+  if (isSudo() && getSudoUsername() === 'root' && getUsername() !== 'root') {
+    throw new ConditionsNotMetError(
+      'Logging in as root and switching with `su - USER` not supported'
+    );
+  }
 }
 
 export function execSyncAsUser(
diff --git a/packages/core-p2p/src/peersLogic.ts b/packages/core-p2p/src/peersLogic.ts
index 700b3404..c20dd6ed 100644
--- a/packages/core-p2p/src/peersLogic.ts
+++ b/packages/core-p2p/src/peersLogic.ts
@@ -81,12 +81,16 @@ export class PeersLogic {
         return false;
       }
       // insert peer!
+      // TODO fix
       if (!_.isEmpty(this.acceptable([thePeer]))) {
         thePeer.updated = Date.now();
         this.peers[thePeer.string] = thePeer;
         this.logger.debug('Inserted new peer', thePeer.string);
       } else {
-        this.logger.debug('Rejecting unacceptable peer', thePeer.string);
+        this.logger.debug(
+          'Rejecting unacceptable peer',
+          thePeer.string + ' v' + thePeer.version
+        );
       }
     }
 
diff --git a/packages/core/src/modules/loader.ts b/packages/core/src/modules/loader.ts
index 4ab1591f..5583684f 100644
--- a/packages/core/src/modules/loader.ts
+++ b/packages/core/src/modules/loader.ts
@@ -212,6 +212,7 @@ export class LoaderModule implements ILoaderModule {
       await this.blocksProcessModule.loadBlocksOffset(
         Math.min(limitPerIteration, 1 + count - offset), // exclusive limit
         offset,
+        // TODO
         true /*verify*/
       );
       offset = offset + limitPerIteration;
diff --git a/packages/rise/etc/mainnet/config.json b/packages/rise/etc/mainnet/config.json
index 0ee9d80e..9e2550f1 100644
--- a/packages/rise/etc/mainnet/config.json
+++ b/packages/rise/etc/mainnet/config.json
@@ -1,7 +1,7 @@
 {
   "port": 5554,
   "address": "0.0.0.0",
-  "version": "2.0.0",
+  "version": "2.1.0",
   "fileLogLevel": "info",
   "logFileName": "logs/rise-mainnet.log",
   "consoleLogLevel": "info",
@@ -39,7 +39,7 @@
   "peers": {
     "enabled": true,
     "trustProxy": false,
-    "seeds": ["45.32.136.66:5554", "45.76.36.14:5554", "212.24.96.99:5554"],
+    "seeds": ["51.15.52.67:5554", "45.76.36.14:5554", "45.63.0.54:5554"],
     "access": {
       "blackList": []
     },