I could not find any guide on how to do this (except for wallets) and it took me longer than it should have so I decided to create this guide. I am no expert though so excuse my noobness.

First, if you don´t already have a node set up, follow this guide to set it up on Digital Ocean:

And you might be able to use the following link to get 60 days for free when signing up: https://t.co/8vWsA4OISb . I am currently on the free period, using a dropplet of 20$ per month.

To do the file replacement, first the node must be stopped. I don´t know the command for that but it can also be done using the command ´top´ , if the node is running it must be one of the first processes; check the pid, press ´k´ to kill the process and then enter the pid # , and enter again.

Then, enter the Raiblocks/Nano folder and remove the data.ldb and data.ldb-lock files:

rm data.ldb data.ldb-locl

Then, you need to download the updated data base file in your node. You can access it on either of the following links:

https://drive.google.com/drive/folders/1sP1z9S011f1W_0nK1KJ-UCJbjaNmk8GQ

https://yadi.sk/d/fcZgyES73Jzj5T

I did it using the google drive one. Best way is to download it directly to the droplet using wget, for example I entered:

wget https://doc-0k-60-docs.googleusercontent.com/docs/securesc/ha0ro937gcuc7l7deffksulhg5h7mbp1/1794a01o1u9o6402rb4cj1j2njvnvk4g/1518631200000/00988547851832248474/*/15f_hzgxoz0e5uXh3rPZch0m1BxXPS-k1

That´s the link for February 13th´s file. You have to get the link for the updated file.

When you finish downloading the file (check that that size is around 1gb), it must be decompressed. First, to install the program to do that, enter:

sudo apt-get install p7zip-full

After it is installed, enter:

7z e filename

After it finishes decompressing, verify that a new file named data.ldb was extracted.

Finally, restart your node and verify that the block count is not starting from scratch.

Additionally, if you fast sync your ldb file, you must change your seed.

Create a new seed (back this up!):

cat /dev/urandom |tr -dc ‘0–9A-F’|head -c${1:-64}

Change your node’s seed :

rai_node — wallet_change_seed — wallet <WALLET_ID> — key <NEW_SEED>

To find out your wallet id, use:

rai_node — wallet_create

If you would like to give me a little retribution for my time:

xrb_34a6yaupgb5a7tsmpq7m6ptr8m8s31uebo4dgkeqhfdkbpdindpak37dze7c